./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 0e0057cc
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_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34c00af4b4663198525b0b7086d994deb20901b2017b1e6c2fe4ceb71d985d42
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-12-02 13:57:18,817 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-12-02 13:57:18,887 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2023-12-02 13:57:18,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-12-02 13:57:18,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-02 13:57:18,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-02 13:57:18,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-02 13:57:18,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-02 13:57:18,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-02 13:57:18,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-02 13:57:18,919 INFO L153 SettingsManager]: * User list type=DISABLED
[2023-12-02 13:57:18,919 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-12-02 13:57:18,920 INFO L153 SettingsManager]: * Explicit value domain=true
[2023-12-02 13:57:18,920 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-12-02 13:57:18,921 INFO L153 SettingsManager]: * Octagon Domain=false
[2023-12-02 13:57:18,921 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain
[2023-12-02 13:57:18,922 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true
[2023-12-02 13:57:18,922 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true
[2023-12-02 13:57:18,923 INFO L153 SettingsManager]: * Interval Domain=false
[2023-12-02 13:57:18,923 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-12-02 13:57:18,924 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer
[2023-12-02 13:57:18,925 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC
[2023-12-02 13:57:18,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-02 13:57:18,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-12-02 13:57:18,926 INFO L153 SettingsManager]: * sizeof long=4
[2023-12-02 13:57:18,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-12-02 13:57:18,927 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-12-02 13:57:18,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-12-02 13:57:18,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-12-02 13:57:18,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-02 13:57:18,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-12-02 13:57:18,929 INFO L153 SettingsManager]: * sizeof long double=12
[2023-12-02 13:57:18,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-12-02 13:57:18,930 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-12-02 13:57:18,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-02 13:57:18,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2023-12-02 13:57:18,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-12-02 13:57:18,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 13:57:18,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-02 13:57:18,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-12-02 13:57:18,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-02 13:57:18,932 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN
[2023-12-02 13:57:18,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-02 13:57:18,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-02 13:57:18,932 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-02 13:57:18,933 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE
[2023-12-02 13:57:18,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-02 13:57:18,933 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES
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_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34c00af4b4663198525b0b7086d994deb20901b2017b1e6c2fe4ceb71d985d42
[2023-12-02 13:57:19,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-02 13:57:19,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-02 13:57:19,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-02 13:57:19,172 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-12-02 13:57:19,172 INFO L274 PluginConnector]: CDTParser initialized
[2023-12-02 13:57:19,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i
[2023-12-02 13:57:21,885 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-12-02 13:57:22,068 INFO L384 CDTParser]: Found 1 translation units.
[2023-12-02 13:57:22,068 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i
[2023-12-02 13:57:22,077 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/data/b7a177867/56d344b62f0c4871926d5027fdde890f/FLAGabd74faa1
[2023-12-02 13:57:22,091 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/data/b7a177867/56d344b62f0c4871926d5027fdde890f
[2023-12-02 13:57:22,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-02 13:57:22,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-12-02 13:57:22,097 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-02 13:57:22,097 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-02 13:57:22,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-02 13:57:22,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507df84c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22, skipping insertion in model container
[2023-12-02 13:57:22,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,130 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-12-02 13:57:22,246 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i[916,929]
[2023-12-02 13:57:22,302 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-12-02 13:57:22,313 INFO L202 MainTranslator]: Completed pre-run
[2023-12-02 13:57:22,323 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i[916,929]
[2023-12-02 13:57:22,359 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-12-02 13:57:22,375 INFO L206 MainTranslator]: Completed translation
[2023-12-02 13:57:22,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22 WrapperNode
[2023-12-02 13:57:22,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-02 13:57:22,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-02 13:57:22,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-02 13:57:22,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-02 13:57:22,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,454 INFO L138 Inliner]: procedures = 29, calls = 143, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 429
[2023-12-02 13:57:22,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-02 13:57:22,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-02 13:57:22,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-02 13:57:22,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-12-02 13:57:22,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,502 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-02 13:57:22,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-02 13:57:22,518 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-12-02 13:57:22,518 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-12-02 13:57:22,519 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (1/1) ...
[2023-12-02 13:57:22,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 13:57:22,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:57:22,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-12-02 13:57:22,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-12-02 13:57:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-02 13:57:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2023-12-02 13:57:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-12-02 13:57:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2023-12-02 13:57:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-12-02 13:57:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real
[2023-12-02 13:57:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-02 13:57:22,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-02 13:57:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-12-02 13:57:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-02 13:57:22,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-02 13:57:22,689 INFO L241 CfgBuilder]: Building ICFG
[2023-12-02 13:57:22,692 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-02 13:57:23,119 INFO L282 CfgBuilder]: Performing block encoding
[2023-12-02 13:57:23,751 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-02 13:57:23,752 INFO L309 CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-02 13:57:23,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:57:23 BoogieIcfgContainer
[2023-12-02 13:57:23,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-02 13:57:23,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-02 13:57:23,756 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-12-02 13:57:23,759 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-12-02 13:57:23,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:57:22" (1/3) ...
[2023-12-02 13:57:23,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80b6df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:57:23, skipping insertion in model container
[2023-12-02 13:57:23,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:22" (2/3) ...
[2023-12-02 13:57:23,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80b6df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:57:23, skipping insertion in model container
[2023-12-02 13:57:23,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:57:23" (3/3) ...
[2023-12-02 13:57:23,762 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-18.i
[2023-12-02 13:57:23,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-02 13:57:23,781 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-02 13:57:23,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-02 13:57:23,834 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@24e053f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-02 13:57:23,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-02 13:57:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2023-12-02 13:57:23,847 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:23,848 INFO L195 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:23,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:23,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1334574537, now seen corresponding path program 1 times
[2023-12-02 13:57:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:57:23,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960922849]
[2023-12-02 13:57:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:57:24,052 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-02 13:57:24,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416898315]
[2023-12-02 13:57:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:24,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 13:57:24,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:57:24,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 13:57:24,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-02 13:57:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-02 13:57:24,604 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-12-02 13:57:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-02 13:57:25,241 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2023-12-02 13:57:25,243 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-12-02 13:57:25,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-02 13:57:25,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-02 13:57:25,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-12-02 13:57:25,451 INFO L445 BasicCegarLoop]: Path program histogram: [1]
[2023-12-02 13:57:25,454 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-12-02 13:57:25,495 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated
[2023-12-02 13:57:25,497 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated
[2023-12-02 13:57:25,497 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated
[2023-12-02 13:57:25,498 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated
[2023-12-02 13:57:25,499 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated
[2023-12-02 13:57:25,499 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated
[2023-12-02 13:57:25,499 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated
[2023-12-02 13:57:25,499 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated
[2023-12-02 13:57:25,500 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated
[2023-12-02 13:57:25,500 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated
[2023-12-02 13:57:25,500 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated
[2023-12-02 13:57:25,501 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated
[2023-12-02 13:57:25,501 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated
[2023-12-02 13:57:25,501 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated
[2023-12-02 13:57:25,501 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated
[2023-12-02 13:57:25,502 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated
[2023-12-02 13:57:25,502 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated
[2023-12-02 13:57:25,502 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated
[2023-12-02 13:57:25,503 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated
[2023-12-02 13:57:25,503 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated
[2023-12-02 13:57:25,503 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated
[2023-12-02 13:57:25,503 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated
[2023-12-02 13:57:25,503 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated
[2023-12-02 13:57:25,504 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated
[2023-12-02 13:57:25,504 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated
[2023-12-02 13:57:25,504 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated
[2023-12-02 13:57:25,505 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated
[2023-12-02 13:57:25,505 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated
[2023-12-02 13:57:25,505 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated
[2023-12-02 13:57:25,505 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated
[2023-12-02 13:57:25,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated
[2023-12-02 13:57:25,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated
[2023-12-02 13:57:25,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated
[2023-12-02 13:57:25,507 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated
[2023-12-02 13:57:25,508 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated
[2023-12-02 13:57:25,508 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated
[2023-12-02 13:57:25,509 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated
[2023-12-02 13:57:25,509 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated
[2023-12-02 13:57:25,510 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated
[2023-12-02 13:57:25,511 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated
[2023-12-02 13:57:25,511 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated
[2023-12-02 13:57:25,512 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated
[2023-12-02 13:57:25,513 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem69 could not be translated
[2023-12-02 13:57:25,513 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem69 could not be translated
[2023-12-02 13:57:25,514 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated
[2023-12-02 13:57:25,514 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated
[2023-12-02 13:57:25,515 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated
[2023-12-02 13:57:25,515 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated
[2023-12-02 13:57:25,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:57:25 BoogieIcfgContainer
[2023-12-02 13:57:25,532 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-02 13:57:25,533 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-12-02 13:57:25,533 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-12-02 13:57:25,533 INFO L274 PluginConnector]: Witness Printer initialized
[2023-12-02 13:57:25,534 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:57:23" (3/4) ...
[2023-12-02 13:57:25,536 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2023-12-02 13:57:25,537 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-12-02 13:57:25,539 INFO L158 Benchmark]: Toolchain (without parser) took 3443.23ms. Allocated memory was 136.3MB in the beginning and 207.6MB in the end (delta: 71.3MB). Free memory was 86.1MB in the beginning and 145.7MB in the end (delta: -59.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB.
[2023-12-02 13:57:25,539 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 136.3MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-12-02 13:57:25,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.43ms. Allocated memory is still 136.3MB. Free memory was 85.8MB in the beginning and 71.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2023-12-02 13:57:25,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.88ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 71.6MB in the beginning and 141.7MB in the end (delta: -70.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB.
[2023-12-02 13:57:25,541 INFO L158 Benchmark]: Boogie Preprocessor took 62.03ms. Allocated memory is still 172.0MB. Free memory was 141.6MB in the beginning and 139.7MB in the end (delta: 1.9MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB.
[2023-12-02 13:57:25,542 INFO L158 Benchmark]: RCFGBuilder took 1235.66ms. Allocated memory is still 172.0MB. Free memory was 139.7MB in the beginning and 114.2MB in the end (delta: 25.6MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB.
[2023-12-02 13:57:25,543 INFO L158 Benchmark]: TraceAbstraction took 1776.31ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 113.1MB in the beginning and 145.7MB in the end (delta: -32.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB.
[2023-12-02 13:57:25,543 INFO L158 Benchmark]: Witness Printer took 4.66ms. Allocated memory is still 207.6MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-12-02 13:57:25,547 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.14ms. Allocated memory is still 136.3MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 279.43ms. Allocated memory is still 136.3MB. Free memory was 85.8MB in the beginning and 71.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 77.88ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 71.6MB in the beginning and 141.7MB in the end (delta: -70.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 62.03ms. Allocated memory is still 172.0MB. Free memory was 141.6MB in the beginning and 139.7MB in the end (delta: 1.9MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB.
* RCFGBuilder took 1235.66ms. Allocated memory is still 172.0MB. Free memory was 139.7MB in the beginning and 114.2MB in the end (delta: 25.6MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB.
* TraceAbstraction took 1776.31ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 113.1MB in the beginning and 145.7MB in the end (delta: -32.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB.
* Witness Printer took 4.66ms. Allocated memory is still 207.6MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem69 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem69 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated
- GenericResult: Unfinished Backtranslation
The program execution was not completely translated back.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- UnprovableResult [Line: 19]: 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 52, overapproximation of bitwiseOr at line 59, overapproximation of bitwiseAnd at line 51.
Possible FailurePath:
[L21] unsigned char isInitial = 0;
[L22-L24] unsigned char BOOL_unsigned_char_Array_0[1] = {
0
};
[L25-L27] float float_Array_0[3] = {
5.8, 0.5, 99.25
};
[L28-L30] signed short int signed_short_int_Array_0[2] = {
5, 18477
};
[L31-L33] unsigned char unsigned_char_Array_0[3] = {
50, 1, 16
};
[L34-L36] unsigned long int unsigned_long_int_Array_0[1] = {
256
};
[L37] unsigned char last_1_unsigned_char_Array_0_2_ = 16;
[L38] unsigned long int last_1_unsigned_long_int_Array_0_0_ = 256;
[L98] isInitial = 1
[L99] FCALL initially()
[L100] COND TRUE 1
[L101] CALL updateLastVariables()
[L90] EXPR unsigned_char_Array_0[2]
[L90] last_1_unsigned_char_Array_0_2_ = unsigned_char_Array_0[2]
[L91] EXPR unsigned_long_int_Array_0[0]
[L91] last_1_unsigned_long_int_Array_0_0_ = unsigned_long_int_Array_0[0]
[L101] RET updateLastVariables()
[L102] CALL updateVariables()
[L69] BOOL_unsigned_char_Array_0[0] = __VERIFIER_nondet_uchar()
[L70] EXPR BOOL_unsigned_char_Array_0[0]
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L70] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0] >= 0)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L70] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0] >= 0)
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L71] EXPR BOOL_unsigned_char_Array_0[0]
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L71] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0] <= 1)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L71] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0] <= 1)
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L72] float_Array_0[0] = __VERIFIER_nondet_float()
[L73] EXPR float_Array_0[0]
[L73] EXPR float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F
[L73] EXPR float_Array_0[0]
[L73] EXPR float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F
[L73] EXPR (float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F) || (float_Array_0[0] <= 9223372.036854765600e+12F && float_Array_0[0] >= 1.0e-20F )
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L73] CALL assume_abort_if_not((float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F) || (float_Array_0[0] <= 9223372.036854765600e+12F && float_Array_0[0] >= 1.0e-20F ))
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L73] RET assume_abort_if_not((float_Array_0[0] >= -922337.2036854765600e+13F && float_Array_0[0] <= -1.0e-20F) || (float_Array_0[0] <= 9223372.036854765600e+12F && float_Array_0[0] >= 1.0e-20F ))
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L74] float_Array_0[1] = __VERIFIER_nondet_float()
[L75] EXPR float_Array_0[1]
[L75] EXPR float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F
[L75] EXPR float_Array_0[1]
[L75] EXPR float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F
[L75] EXPR (float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F) || (float_Array_0[1] <= 9223372.036854765600e+12F && float_Array_0[1] >= 1.0e-20F )
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L75] CALL assume_abort_if_not((float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F) || (float_Array_0[1] <= 9223372.036854765600e+12F && float_Array_0[1] >= 1.0e-20F ))
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L75] RET assume_abort_if_not((float_Array_0[1] >= -922337.2036854765600e+13F && float_Array_0[1] <= -1.0e-20F) || (float_Array_0[1] <= 9223372.036854765600e+12F && float_Array_0[1] >= 1.0e-20F ))
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L76] signed_short_int_Array_0[0] = __VERIFIER_nondet_short()
[L77] EXPR signed_short_int_Array_0[0]
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L77] CALL assume_abort_if_not(signed_short_int_Array_0[0] >= 0)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L77] RET assume_abort_if_not(signed_short_int_Array_0[0] >= 0)
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L78] EXPR signed_short_int_Array_0[0]
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L78] CALL assume_abort_if_not(signed_short_int_Array_0[0] <= 16383)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L78] RET assume_abort_if_not(signed_short_int_Array_0[0] <= 16383)
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L79] signed_short_int_Array_0[1] = __VERIFIER_nondet_short()
[L80] EXPR signed_short_int_Array_0[1]
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L80] CALL assume_abort_if_not(signed_short_int_Array_0[1] >= 16383)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L80] RET assume_abort_if_not(signed_short_int_Array_0[1] >= 16383)
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L81] EXPR signed_short_int_Array_0[1]
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L81] CALL assume_abort_if_not(signed_short_int_Array_0[1] <= 32767)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L81] RET assume_abort_if_not(signed_short_int_Array_0[1] <= 32767)
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L82] unsigned_char_Array_0[0] = __VERIFIER_nondet_uchar()
[L83] EXPR unsigned_char_Array_0[0]
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L83] CALL assume_abort_if_not(unsigned_char_Array_0[0] >= 0)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L83] RET assume_abort_if_not(unsigned_char_Array_0[0] >= 0)
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L84] EXPR unsigned_char_Array_0[0]
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L84] CALL assume_abort_if_not(unsigned_char_Array_0[0] <= 254)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L84] RET assume_abort_if_not(unsigned_char_Array_0[0] <= 254)
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L85] unsigned_char_Array_0[1] = __VERIFIER_nondet_uchar()
[L86] EXPR unsigned_char_Array_0[1]
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L86] CALL assume_abort_if_not(unsigned_char_Array_0[1] >= 0)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L86] RET assume_abort_if_not(unsigned_char_Array_0[1] >= 0)
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L87] EXPR unsigned_char_Array_0[1]
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L87] CALL assume_abort_if_not(unsigned_char_Array_0[1] <= 254)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L20] COND FALSE !(!cond)
[L87] RET assume_abort_if_not(unsigned_char_Array_0[1] <= 254)
VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L102] RET updateVariables()
[L103] CALL step()
[L42] EXPR signed_short_int_Array_0[0]
[L42] signed short int stepLocal_3 = signed_short_int_Array_0[0];
[L43] unsigned long int stepLocal_2 = last_1_unsigned_long_int_Array_0_0_;
[L44] COND FALSE !(last_1_unsigned_long_int_Array_0_0_ > stepLocal_3)
[L51] EXPR unsigned_char_Array_0[2]
[L51] EXPR signed_short_int_Array_0[1]
[L51] EXPR unsigned_char_Array_0[2] & signed_short_int_Array_0[1]
[L51] EXPR unsigned_char_Array_0[0]
[L51] EXPR unsigned_char_Array_0[2]
[L51] EXPR unsigned_char_Array_0[2]
[L51] COND FALSE !((unsigned_char_Array_0[2] & signed_short_int_Array_0[1]) > ((unsigned_char_Array_0[0] * last_1_unsigned_long_int_Array_0_0_) * (unsigned_char_Array_0[2] + unsigned_char_Array_0[2])))
[L56] EXPR signed_short_int_Array_0[1]
[L56] unsigned_long_int_Array_0[0] = signed_short_int_Array_0[1]
[L58] EXPR unsigned_char_Array_0[2]
[L58] unsigned char stepLocal_1 = unsigned_char_Array_0[2];
[L59] EXPR unsigned_char_Array_0[2]
[L59] EXPR unsigned_char_Array_0[2]
[L59] EXPR unsigned_long_int_Array_0[0]
[L59] EXPR ((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])
[L59] EXPR unsigned_long_int_Array_0[0]
[L59] EXPR ((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])
[L59] EXPR unsigned_char_Array_0[2] ^ ((((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])))
[L59] unsigned long int stepLocal_0 = unsigned_char_Array_0[2] ^ ((((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])));
[L60] EXPR unsigned_char_Array_0[2]
[L60] COND FALSE !(stepLocal_0 != unsigned_char_Array_0[2])
[L65] float_Array_0[2] = 10.5f
[L103] RET step()
[L104] CALL, EXPR property()
[L94] EXPR unsigned_char_Array_0[2]
[L94] EXPR unsigned_char_Array_0[2]
[L94] EXPR unsigned_long_int_Array_0[0]
[L94] EXPR ((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])
[L94] EXPR unsigned_long_int_Array_0[0]
[L94] EXPR ((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])
[L94] EXPR unsigned_char_Array_0[2] ^ ((((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])))
[L94] EXPR unsigned_char_Array_0[2]
[L94] EXPR ((unsigned_char_Array_0[2] ^ ((((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])))) != unsigned_char_Array_0[2]) ? ((unsigned_char_Array_0[2] == (unsigned_char_Array_0[2] - (signed_short_int_Array_0[1] - unsigned_char_Array_0[2]))) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) < (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : 1) : (float_Array_0[2] == ((float) 10.5f))
[L94] EXPR float_Array_0[2]
[L94] EXPR ((unsigned_char_Array_0[2] ^ ((((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])))) != unsigned_char_Array_0[2]) ? ((unsigned_char_Array_0[2] == (unsigned_char_Array_0[2] - (signed_short_int_Array_0[1] - unsigned_char_Array_0[2]))) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) < (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : 1) : (float_Array_0[2] == ((float) 10.5f))
[L94] EXPR (((unsigned_char_Array_0[2] ^ ((((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])))) != unsigned_char_Array_0[2]) ? ((unsigned_char_Array_0[2] == (unsigned_char_Array_0[2] - (signed_short_int_Array_0[1] - unsigned_char_Array_0[2]))) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) < (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : 1) : (float_Array_0[2] == ((float) 10.5f))) && ((last_1_unsigned_long_int_Array_0_0_ > signed_short_int_Array_0[0]) ? ((((last_1_unsigned_char_Array_0_2_ - signed_short_int_Array_0[0]) + signed_short_int_Array_0[1]) > last_1_unsigned_long_int_Array_0_0_) ? (unsigned_char_Array_0[2] == ((unsigned char) ((((unsigned_char_Array_0[0]) < (unsigned_char_Array_0[1])) ? (unsigned_char_Array_0[0]) : (unsigned_char_Array_0[1]))))) : (unsigned_char_Array_0[2] == ((unsigned char) unsigned_char_Array_0[0]))) : 1)
[L94] EXPR ((((unsigned_char_Array_0[2] ^ ((((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])))) != unsigned_char_Array_0[2]) ? ((unsigned_char_Array_0[2] == (unsigned_char_Array_0[2] - (signed_short_int_Array_0[1] - unsigned_char_Array_0[2]))) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) < (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : 1) : (float_Array_0[2] == ((float) 10.5f))) && ((last_1_unsigned_long_int_Array_0_0_ > signed_short_int_Array_0[0]) ? ((((last_1_unsigned_char_Array_0_2_ - signed_short_int_Array_0[0]) + signed_short_int_Array_0[1]) > last_1_unsigned_long_int_Array_0_0_) ? (unsigned_char_Array_0[2] == ((unsigned char) ((((unsigned_char_Array_0[0]) < (unsigned_char_Array_0[1])) ? (unsigned_char_Array_0[0]) : (unsigned_char_Array_0[1]))))) : (unsigned_char_Array_0[2] == ((unsigned char) unsigned_char_Array_0[0]))) : 1)) && (((unsigned_char_Array_0[2] & signed_short_int_Array_0[1]) > ((unsigned_char_Array_0[0] * last_1_unsigned_long_int_Array_0_0_) * (unsigned_char_Array_0[2] + unsigned_char_Array_0[2]))) ? ((BOOL_unsigned_char_Array_0[0] && (float_Array_0[0] > float_Array_0[1])) ? (unsigned_long_int_Array_0[0] == ((unsigned long int) signed_short_int_Array_0[1])) : 1) : (unsigned_long_int_Array_0[0] == ((unsigned long int) signed_short_int_Array_0[1])))
[L94-L95] return ((((unsigned_char_Array_0[2] ^ ((((unsigned_char_Array_0[2]) > (unsigned_long_int_Array_0[0])) ? (unsigned_char_Array_0[2]) : (unsigned_long_int_Array_0[0])))) != unsigned_char_Array_0[2]) ? ((unsigned_char_Array_0[2] == (unsigned_char_Array_0[2] - (signed_short_int_Array_0[1] - unsigned_char_Array_0[2]))) ? (float_Array_0[2] == ((float) ((((float_Array_0[0]) < (float_Array_0[1])) ? (float_Array_0[0]) : (float_Array_0[1]))))) : 1) : (float_Array_0[2] == ((float) 10.5f))) && ((last_1_unsigned_long_int_Array_0_0_ > signed_short_int_Array_0[0]) ? ((((last_1_unsigned_char_Array_0_2_ - signed_short_int_Array_0[0]) + signed_short_int_Array_0[1]) > last_1_unsigned_long_int_Array_0_0_) ? (unsigned_char_Array_0[2] == ((unsigned char) ((((unsigned_char_Array_0[0]) < (unsigned_char_Array_0[1])) ? (unsigned_char_Array_0[0]) : (unsigned_char_Array_0[1]))))) : (unsigned_char_Array_0[2] == ((unsigned char) unsigned_char_Array_0[0]))) : 1)) && (((unsigned_char_Array_0[2] & signed_short_int_Array_0[1]) > ((unsigned_char_Array_0[0] * last_1_unsigned_long_int_Array_0_0_) * (unsigned_char_Array_0[2] + unsigned_char_Array_0[2]))) ? ((BOOL_unsigned_char_Array_0[0] && (float_Array_0[0] > float_Array_0[1])) ? (unsigned_long_int_Array_0[0] == ((unsigned long int) signed_short_int_Array_0[1])) : 1) : (unsigned_long_int_Array_0[0] == ((unsigned long int) signed_short_int_Array_0[1])))
;
[L104] RET, EXPR property()
[L104] CALL __VERIFIER_assert(property())
[L19] COND TRUE !(cond)
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=0, cond=0, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
[L19] reach_error()
VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=0, cond=0, float_Array_0={5:0}, isInitial=1, last_1_unsigned_char_Array_0_2_=16, last_1_unsigned_long_int_Array_0_0_=256, signed_short_int_Array_0={6:0}, unsigned_char_Array_0={7:0}, unsigned_long_int_Array_0={8:0}]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 12, 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=33occurred 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 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
[2023-12-02 13:57:25,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34c00af4b4663198525b0b7086d994deb20901b2017b1e6c2fe4ceb71d985d42
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-12-02 13:57:27,456 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-12-02 13:57:27,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf
[2023-12-02 13:57:27,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-12-02 13:57:27,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-02 13:57:27,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-02 13:57:27,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-02 13:57:27,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-02 13:57:27,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-02 13:57:27,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-02 13:57:27,566 INFO L153 SettingsManager]: * User list type=DISABLED
[2023-12-02 13:57:27,567 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-12-02 13:57:27,567 INFO L153 SettingsManager]: * Explicit value domain=true
[2023-12-02 13:57:27,568 INFO L153 SettingsManager]: * Octagon Domain=false
[2023-12-02 13:57:27,568 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain
[2023-12-02 13:57:27,569 INFO L153 SettingsManager]: * Interval Domain=false
[2023-12-02 13:57:27,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-02 13:57:27,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-12-02 13:57:27,571 INFO L153 SettingsManager]: * sizeof long=4
[2023-12-02 13:57:27,571 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-12-02 13:57:27,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-12-02 13:57:27,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-12-02 13:57:27,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-02 13:57:27,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-12-02 13:57:27,573 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-12-02 13:57:27,573 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2023-12-02 13:57:27,574 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-02 13:57:27,574 INFO L153 SettingsManager]: * sizeof long double=12
[2023-12-02 13:57:27,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-12-02 13:57:27,575 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-12-02 13:57:27,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-02 13:57:27,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-12-02 13:57:27,576 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2023-12-02 13:57:27,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-12-02 13:57:27,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 13:57:27,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-02 13:57:27,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-12-02 13:57:27,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-02 13:57:27,577 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS
[2023-12-02 13:57:27,578 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-02 13:57:27,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-02 13:57:27,578 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-02 13:57:27,578 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE
[2023-12-02 13:57:27,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-02 13:57:27,579 INFO L153 SettingsManager]: * Logic for external solver=AUFBV
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_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34c00af4b4663198525b0b7086d994deb20901b2017b1e6c2fe4ceb71d985d42
[2023-12-02 13:57:27,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-02 13:57:27,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-02 13:57:27,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-02 13:57:27,875 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-12-02 13:57:27,875 INFO L274 PluginConnector]: CDTParser initialized
[2023-12-02 13:57:27,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i
[2023-12-02 13:57:30,608 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-12-02 13:57:30,802 INFO L384 CDTParser]: Found 1 translation units.
[2023-12-02 13:57:30,802 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i
[2023-12-02 13:57:30,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/data/50ac71726/2ae27cd2427e41ebb4d5d1440423f2e8/FLAG829952d42
[2023-12-02 13:57:30,823 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/data/50ac71726/2ae27cd2427e41ebb4d5d1440423f2e8
[2023-12-02 13:57:30,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-02 13:57:30,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-12-02 13:57:30,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-02 13:57:30,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-02 13:57:30,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-02 13:57:30,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:57:30" (1/1) ...
[2023-12-02 13:57:30,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe76138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:30, skipping insertion in model container
[2023-12-02 13:57:30,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:57:30" (1/1) ...
[2023-12-02 13:57:30,861 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-12-02 13:57:31,014 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i[916,929]
[2023-12-02 13:57:31,069 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-12-02 13:57:31,086 INFO L202 MainTranslator]: Completed pre-run
[2023-12-02 13:57:31,099 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-18.i[916,929]
[2023-12-02 13:57:31,140 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-12-02 13:57:31,163 INFO L206 MainTranslator]: Completed translation
[2023-12-02 13:57:31,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31 WrapperNode
[2023-12-02 13:57:31,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-02 13:57:31,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-02 13:57:31,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-02 13:57:31,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-02 13:57:31,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,227 INFO L138 Inliner]: procedures = 36, calls = 143, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 390
[2023-12-02 13:57:31,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-02 13:57:31,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-02 13:57:31,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-02 13:57:31,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-12-02 13:57:31,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-02 13:57:31,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-02 13:57:31,305 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-12-02 13:57:31,305 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-12-02 13:57:31,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (1/1) ...
[2023-12-02 13:57:31,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 13:57:31,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:57:31,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-12-02 13:57:31,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-12-02 13:57:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-02 13:57:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1
[2023-12-02 13:57:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2
[2023-12-02 13:57:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-12-02 13:57:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4
[2023-12-02 13:57:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4
[2023-12-02 13:57:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2023-12-02 13:57:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2
[2023-12-02 13:57:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4
[2023-12-02 13:57:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4
[2023-12-02 13:57:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-02 13:57:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-02 13:57:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-02 13:57:31,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-02 13:57:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1
[2023-12-02 13:57:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2
[2023-12-02 13:57:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2023-12-02 13:57:31,511 INFO L241 CfgBuilder]: Building ICFG
[2023-12-02 13:57:31,514 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-02 13:57:32,601 INFO L282 CfgBuilder]: Performing block encoding
[2023-12-02 13:57:32,642 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-02 13:57:32,643 INFO L309 CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-02 13:57:32,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:57:32 BoogieIcfgContainer
[2023-12-02 13:57:32,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-02 13:57:32,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-02 13:57:32,646 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-12-02 13:57:32,661 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-12-02 13:57:32,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:57:30" (1/3) ...
[2023-12-02 13:57:32,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707490a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:57:32, skipping insertion in model container
[2023-12-02 13:57:32,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:31" (2/3) ...
[2023-12-02 13:57:32,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707490a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:57:32, skipping insertion in model container
[2023-12-02 13:57:32,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:57:32" (3/3) ...
[2023-12-02 13:57:32,664 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-18.i
[2023-12-02 13:57:32,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-02 13:57:32,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-02 13:57:32,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-02 13:57:32,725 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@5b119e86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-02 13:57:32,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-02 13:57:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 71 states have internal predecessors, (103), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2023-12-02 13:57:32,739 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:32,740 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:32,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:32,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:32,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1840276238, now seen corresponding path program 1 times
[2023-12-02 13:57:32,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:32,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893461199]
[2023-12-02 13:57:32,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:32,757 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
[2023-12-02 13:57:32,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:32,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:32,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:33,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-02 13:57:33,030 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked.
[2023-12-02 13:57:33,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:33,065 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:33,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893461199]
[2023-12-02 13:57:33,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893461199] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:33,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:57:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-02 13:57:33,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3644155]
[2023-12-02 13:57:33,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:33,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-02 13:57:33,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:33,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-02 13:57:33,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-02 13:57:33,101 INFO L87 Difference]: Start difference. First operand has 85 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 71 states have internal predecessors, (103), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)
[2023-12-02 13:57:33,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:57:33,148 INFO L93 Difference]: Finished difference Result 167 states and 264 transitions.
[2023-12-02 13:57:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-12-02 13:57:33,151 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98
[2023-12-02 13:57:33,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:57:33,157 INFO L225 Difference]: With dead ends: 167
[2023-12-02 13:57:33,157 INFO L226 Difference]: Without dead ends: 83
[2023-12-02 13:57:33,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-02 13:57:33,163 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-02 13:57:33,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-02 13:57:33,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2023-12-02 13:57:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83.
[2023-12-02 13:57:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 69 states have internal predecessors, (98), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 122 transitions.
[2023-12-02 13:57:33,203 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 122 transitions. Word has length 98
[2023-12-02 13:57:33,203 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:57:33,204 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 122 transitions.
[2023-12-02 13:57:33,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)
[2023-12-02 13:57:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 122 transitions.
[2023-12-02 13:57:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2023-12-02 13:57:33,209 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:33,210 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:33,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:33,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:33,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:33,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1929259934, now seen corresponding path program 1 times
[2023-12-02 13:57:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:33,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291119343]
[2023-12-02 13:57:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:33,413 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
[2023-12-02 13:57:33,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:33,414 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:33,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:33,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-02 13:57:33,711 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked.
[2023-12-02 13:57:33,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:33,760 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:33,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291119343]
[2023-12-02 13:57:33,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291119343] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:33,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:57:33,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-02 13:57:33,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184401096]
[2023-12-02 13:57:33,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:33,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-02 13:57:33,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-02 13:57:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-02 13:57:33,765 INFO L87 Difference]: Start difference. First operand 83 states and 122 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)
[2023-12-02 13:57:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:57:33,872 INFO L93 Difference]: Finished difference Result 171 states and 252 transitions.
[2023-12-02 13:57:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-12-02 13:57:33,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98
[2023-12-02 13:57:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:57:33,875 INFO L225 Difference]: With dead ends: 171
[2023-12-02 13:57:33,875 INFO L226 Difference]: Without dead ends: 89
[2023-12-02 13:57:33,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-02 13:57:33,877 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 10 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-02 13:57:33,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 346 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-02 13:57:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2023-12-02 13:57:33,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85.
[2023-12-02 13:57:33,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 71 states have (on average 1.408450704225352) internal successors, (100), 71 states have internal predecessors, (100), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 124 transitions.
[2023-12-02 13:57:33,893 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 124 transitions. Word has length 98
[2023-12-02 13:57:33,893 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:57:33,893 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 124 transitions.
[2023-12-02 13:57:33,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)
[2023-12-02 13:57:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 124 transitions.
[2023-12-02 13:57:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2023-12-02 13:57:33,896 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:33,896 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:33,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0
[2023-12-02 13:57:34,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:34,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:34,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:34,101 INFO L85 PathProgramCache]: Analyzing trace with hash -486576416, now seen corresponding path program 1 times
[2023-12-02 13:57:34,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:34,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992036956]
[2023-12-02 13:57:34,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:34,103 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
[2023-12-02 13:57:34,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:34,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:34,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (4)] Waiting until timeout for monitored process
[2023-12-02 13:57:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:34,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-02 13:57:34,376 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:34,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2023-12-02 13:57:34,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 44
[2023-12-02 13:57:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:57:34,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:34,548 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:34,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992036956]
[2023-12-02 13:57:34,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992036956] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:34,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:57:34,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 13:57:34,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255324003]
[2023-12-02 13:57:34,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:34,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 13:57:34,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:34,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 13:57:34,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-02 13:57:34,552 INFO L87 Difference]: Start difference. First operand 85 states and 124 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:36,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:57:36,034 INFO L93 Difference]: Finished difference Result 214 states and 312 transitions.
[2023-12-02 13:57:36,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-12-02 13:57:36,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 98
[2023-12-02 13:57:36,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:57:36,037 INFO L225 Difference]: With dead ends: 214
[2023-12-02 13:57:36,038 INFO L226 Difference]: Without dead ends: 130
[2023-12-02 13:57:36,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-02 13:57:36,040 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 87 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2023-12-02 13:57:36,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 411 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2023-12-02 13:57:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2023-12-02 13:57:36,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 91.
[2023-12-02 13:57:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.4025974025974026) internal successors, (108), 77 states have internal predecessors, (108), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 132 transitions.
[2023-12-02 13:57:36,053 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 132 transitions. Word has length 98
[2023-12-02 13:57:36,053 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:57:36,053 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 132 transitions.
[2023-12-02 13:57:36,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 132 transitions.
[2023-12-02 13:57:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2023-12-02 13:57:36,056 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:36,056 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:36,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (4)] Ended with exit code 0
[2023-12-02 13:57:36,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:36,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:36,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:36,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1453732003, now seen corresponding path program 1 times
[2023-12-02 13:57:36,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:36,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616171702]
[2023-12-02 13:57:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:36,261 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
[2023-12-02 13:57:36,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:36,262 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:36,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (5)] Waiting until timeout for monitored process
[2023-12-02 13:57:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:36,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-02 13:57:36,475 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:57:36,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:36,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:36,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616171702]
[2023-12-02 13:57:36,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616171702] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:36,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:57:36,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 13:57:36,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045562699]
[2023-12-02 13:57:36,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:36,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 13:57:36,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 13:57:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-02 13:57:36,627 INFO L87 Difference]: Start difference. First operand 91 states and 132 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:57:37,791 INFO L93 Difference]: Finished difference Result 215 states and 312 transitions.
[2023-12-02 13:57:37,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-12-02 13:57:37,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 99
[2023-12-02 13:57:37,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:57:37,794 INFO L225 Difference]: With dead ends: 215
[2023-12-02 13:57:37,794 INFO L226 Difference]: Without dead ends: 125
[2023-12-02 13:57:37,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-02 13:57:37,796 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 76 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2023-12-02 13:57:37,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 245 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2023-12-02 13:57:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2023-12-02 13:57:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 96.
[2023-12-02 13:57:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 82 states have internal predecessors, (115), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions.
[2023-12-02 13:57:37,806 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 99
[2023-12-02 13:57:37,807 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:57:37,807 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 139 transitions.
[2023-12-02 13:57:37,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:37,807 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions.
[2023-12-02 13:57:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2023-12-02 13:57:37,809 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:37,809 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:37,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (5)] Ended with exit code 0
[2023-12-02 13:57:38,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:38,010 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:38,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1846759013, now seen corresponding path program 1 times
[2023-12-02 13:57:38,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:38,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240521076]
[2023-12-02 13:57:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:38,011 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
[2023-12-02 13:57:38,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:38,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:38,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (6)] Waiting until timeout for monitored process
[2023-12-02 13:57:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:38,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-02 13:57:38,231 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:38,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 26
[2023-12-02 13:57:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:57:38,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:38,506 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:38,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240521076]
[2023-12-02 13:57:38,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240521076] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:38,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:57:38,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-12-02 13:57:38,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050907596]
[2023-12-02 13:57:38,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:38,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-02 13:57:38,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:38,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-02 13:57:38,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2023-12-02 13:57:38,508 INFO L87 Difference]: Start difference. First operand 96 states and 139 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:57:40,338 INFO L93 Difference]: Finished difference Result 220 states and 318 transitions.
[2023-12-02 13:57:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2023-12-02 13:57:40,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 99
[2023-12-02 13:57:40,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:57:40,341 INFO L225 Difference]: With dead ends: 220
[2023-12-02 13:57:40,341 INFO L226 Difference]: Without dead ends: 125
[2023-12-02 13:57:40,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2023-12-02 13:57:40,342 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 70 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2023-12-02 13:57:40,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 601 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2023-12-02 13:57:40,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2023-12-02 13:57:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 98.
[2023-12-02 13:57:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 84 states have (on average 1.3928571428571428) internal successors, (117), 84 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 141 transitions.
[2023-12-02 13:57:40,349 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 141 transitions. Word has length 99
[2023-12-02 13:57:40,349 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:57:40,349 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 141 transitions.
[2023-12-02 13:57:40,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 141 transitions.
[2023-12-02 13:57:40,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2023-12-02 13:57:40,351 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:40,351 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:40,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (6)] Ended with exit code 0
[2023-12-02 13:57:40,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:40,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:40,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:40,552 INFO L85 PathProgramCache]: Analyzing trace with hash 173868325, now seen corresponding path program 1 times
[2023-12-02 13:57:40,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:40,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715725493]
[2023-12-02 13:57:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:40,553 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
[2023-12-02 13:57:40,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:40,554 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:40,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (7)] Waiting until timeout for monitored process
[2023-12-02 13:57:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:40,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-02 13:57:40,758 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:41,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 13:57:41,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 36
[2023-12-02 13:57:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:57:41,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:41,135 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715725493]
[2023-12-02 13:57:41,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715725493] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:41,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:57:41,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-12-02 13:57:41,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593969106]
[2023-12-02 13:57:41,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:41,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-02 13:57:41,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:41,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-02 13:57:41,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-12-02 13:57:41,138 INFO L87 Difference]: Start difference. First operand 98 states and 141 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:43,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:57:43,577 INFO L93 Difference]: Finished difference Result 248 states and 358 transitions.
[2023-12-02 13:57:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2023-12-02 13:57:43,578 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 99
[2023-12-02 13:57:43,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:57:43,579 INFO L225 Difference]: With dead ends: 248
[2023-12-02 13:57:43,579 INFO L226 Difference]: Without dead ends: 151
[2023-12-02 13:57:43,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2023-12-02 13:57:43,581 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 154 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time
[2023-12-02 13:57:43,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 540 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time]
[2023-12-02 13:57:43,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2023-12-02 13:57:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 100.
[2023-12-02 13:57:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 86 states have internal predecessors, (120), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 144 transitions.
[2023-12-02 13:57:43,588 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 144 transitions. Word has length 99
[2023-12-02 13:57:43,588 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:57:43,588 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 144 transitions.
[2023-12-02 13:57:43,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:43,588 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 144 transitions.
[2023-12-02 13:57:43,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2023-12-02 13:57:43,589 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:43,589 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:43,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (7)] Ended with exit code 0
[2023-12-02 13:57:43,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:43,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:43,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:43,791 INFO L85 PathProgramCache]: Analyzing trace with hash 566895335, now seen corresponding path program 1 times
[2023-12-02 13:57:43,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:43,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951417587]
[2023-12-02 13:57:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:43,791 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
[2023-12-02 13:57:43,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:43,792 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:43,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (8)] Waiting until timeout for monitored process
[2023-12-02 13:57:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:43,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-02 13:57:43,980 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:57:44,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:44,142 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:44,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951417587]
[2023-12-02 13:57:44,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951417587] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:44,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:57:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 13:57:44,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969006407]
[2023-12-02 13:57:44,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:44,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 13:57:44,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:44,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 13:57:44,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-02 13:57:44,144 INFO L87 Difference]: Start difference. First operand 100 states and 144 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:45,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:57:45,708 INFO L93 Difference]: Finished difference Result 234 states and 335 transitions.
[2023-12-02 13:57:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-12-02 13:57:45,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 99
[2023-12-02 13:57:45,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:57:45,710 INFO L225 Difference]: With dead ends: 234
[2023-12-02 13:57:45,710 INFO L226 Difference]: Without dead ends: 135
[2023-12-02 13:57:45,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-12-02 13:57:45,711 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2023-12-02 13:57:45,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 340 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2023-12-02 13:57:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2023-12-02 13:57:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 102.
[2023-12-02 13:57:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 88 states have (on average 1.375) internal successors, (121), 88 states have internal predecessors, (121), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 145 transitions.
[2023-12-02 13:57:45,719 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 145 transitions. Word has length 99
[2023-12-02 13:57:45,720 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:57:45,720 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 145 transitions.
[2023-12-02 13:57:45,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 145 transitions.
[2023-12-02 13:57:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2023-12-02 13:57:45,721 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:45,721 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:45,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (8)] Ended with exit code 0
[2023-12-02 13:57:45,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:45,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:45,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash 989048718, now seen corresponding path program 1 times
[2023-12-02 13:57:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:45,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785401720]
[2023-12-02 13:57:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:45,923 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
[2023-12-02 13:57:45,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:45,924 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:45,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (9)] Waiting until timeout for monitored process
[2023-12-02 13:57:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:46,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-02 13:57:46,104 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:57:46,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:46,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:46,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785401720]
[2023-12-02 13:57:46,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785401720] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:46,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:57:46,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 13:57:46,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363575786]
[2023-12-02 13:57:46,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 13:57:46,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:46,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 13:57:46,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-02 13:57:46,138 INFO L87 Difference]: Start difference. First operand 102 states and 145 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:46,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:57:46,242 INFO L93 Difference]: Finished difference Result 220 states and 314 transitions.
[2023-12-02 13:57:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-12-02 13:57:46,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100
[2023-12-02 13:57:46,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:57:46,244 INFO L225 Difference]: With dead ends: 220
[2023-12-02 13:57:46,244 INFO L226 Difference]: Without dead ends: 119
[2023-12-02 13:57:46,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-02 13:57:46,245 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 53 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-02 13:57:46,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 478 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-02 13:57:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2023-12-02 13:57:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103.
[2023-12-02 13:57:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 89 states have (on average 1.3707865168539326) internal successors, (122), 89 states have internal predecessors, (122), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 146 transitions.
[2023-12-02 13:57:46,252 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 146 transitions. Word has length 100
[2023-12-02 13:57:46,253 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:57:46,253 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 146 transitions.
[2023-12-02 13:57:46,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:46,253 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 146 transitions.
[2023-12-02 13:57:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2023-12-02 13:57:46,255 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:46,255 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:46,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (9)] Ended with exit code 0
[2023-12-02 13:57:46,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:46,456 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:46,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1487731701, now seen corresponding path program 1 times
[2023-12-02 13:57:46,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:46,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092773190]
[2023-12-02 13:57:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:46,457 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
[2023-12-02 13:57:46,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:46,458 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:46,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (10)] Waiting until timeout for monitored process
[2023-12-02 13:57:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:46,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-02 13:57:46,663 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:57:46,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:46,691 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:46,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092773190]
[2023-12-02 13:57:46,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092773190] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:46,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:57:46,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 13:57:46,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065770420]
[2023-12-02 13:57:46,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:46,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 13:57:46,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:46,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 13:57:46,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-02 13:57:46,693 INFO L87 Difference]: Start difference. First operand 103 states and 146 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:46,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:57:46,793 INFO L93 Difference]: Finished difference Result 214 states and 304 transitions.
[2023-12-02 13:57:46,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-12-02 13:57:46,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100
[2023-12-02 13:57:46,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:57:46,795 INFO L225 Difference]: With dead ends: 214
[2023-12-02 13:57:46,795 INFO L226 Difference]: Without dead ends: 112
[2023-12-02 13:57:46,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-02 13:57:46,796 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 44 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-02 13:57:46,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 438 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-02 13:57:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2023-12-02 13:57:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106.
[2023-12-02 13:57:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 92 states have (on average 1.358695652173913) internal successors, (125), 92 states have internal predecessors, (125), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:46,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 149 transitions.
[2023-12-02 13:57:46,803 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 149 transitions. Word has length 100
[2023-12-02 13:57:46,803 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:57:46,804 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 149 transitions.
[2023-12-02 13:57:46,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:46,804 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 149 transitions.
[2023-12-02 13:57:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2023-12-02 13:57:46,805 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:46,805 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:46,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (10)] Ended with exit code 0
[2023-12-02 13:57:47,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:47,006 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:47,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:47,006 INFO L85 PathProgramCache]: Analyzing trace with hash 457158088, now seen corresponding path program 1 times
[2023-12-02 13:57:47,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:47,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815059653]
[2023-12-02 13:57:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:47,007 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
[2023-12-02 13:57:47,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:47,008 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:47,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (11)] Waiting until timeout for monitored process
[2023-12-02 13:57:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:47,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-12-02 13:57:47,259 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:47,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 13:57:47,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 13:57:48,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 13:57:48,964 INFO L349 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size
[2023-12-02 13:57:48,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 34
[2023-12-02 13:57:49,115 INFO L349 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2023-12-02 13:57:49,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48
[2023-12-02 13:57:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 93 proven. 89 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked.
[2023-12-02 13:57:49,230 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 13:57:49,478 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:49,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815059653]
[2023-12-02 13:57:49,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815059653] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:57:49,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1578013618]
[2023-12-02 13:57:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:49,478 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 13:57:49,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 13:57:49,480 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 13:57:49,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process
[2023-12-02 13:57:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:50,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-12-02 13:57:50,085 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:50,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8
[2023-12-02 13:57:51,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 13:57:51,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 13:57:52,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26
[2023-12-02 13:57:52,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18
[2023-12-02 13:57:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 99 proven. 89 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2023-12-02 13:57:52,280 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 13:57:52,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1578013618] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:57:52,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809431709]
[2023-12-02 13:57:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:52,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 13:57:52,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:57:52,330 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 13:57:52,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-02 13:57:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:52,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-02 13:57:52,825 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:53,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19
[2023-12-02 13:57:53,787 INFO L349 Elim1Store]: treesize reduction 6, result has 77.8 percent of original size
[2023-12-02 13:57:53,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 47
[2023-12-02 13:57:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:57:53,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809431709] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:53,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-12-02 13:57:53,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 10] total 22
[2023-12-02 13:57:53,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174100056]
[2023-12-02 13:57:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:53,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-02 13:57:53,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:53,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-02 13:57:53,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650
[2023-12-02 13:57:53,904 INFO L87 Difference]: Start difference. First operand 106 states and 149 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:57:56,910 INFO L93 Difference]: Finished difference Result 258 states and 360 transitions.
[2023-12-02 13:57:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-12-02 13:57:56,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101
[2023-12-02 13:57:56,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:57:56,912 INFO L225 Difference]: With dead ends: 258
[2023-12-02 13:57:56,912 INFO L226 Difference]: Without dead ends: 153
[2023-12-02 13:57:56,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 321 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870
[2023-12-02 13:57:56,914 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 130 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time
[2023-12-02 13:57:56,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 364 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time]
[2023-12-02 13:57:56,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2023-12-02 13:57:56,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 111.
[2023-12-02 13:57:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 97 states have (on average 1.3608247422680413) internal successors, (132), 97 states have internal predecessors, (132), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:57:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 156 transitions.
[2023-12-02 13:57:56,919 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 156 transitions. Word has length 101
[2023-12-02 13:57:56,919 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:57:56,919 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 156 transitions.
[2023-12-02 13:57:56,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:57:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 156 transitions.
[2023-12-02 13:57:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2023-12-02 13:57:56,921 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:57:56,921 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:57:56,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0
[2023-12-02 13:57:57,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-12-02 13:57:57,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (11)] Ended with exit code 0
[2023-12-02 13:57:57,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:57:57,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:57:57,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:57:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1131189814, now seen corresponding path program 1 times
[2023-12-02 13:57:57,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:57:57,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322535676]
[2023-12-02 13:57:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:57:57,528 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
[2023-12-02 13:57:57,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:57:57,529 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:57:57,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (14)] Waiting until timeout for monitored process
[2023-12-02 13:57:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:57:57,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-12-02 13:57:57,793 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:57:58,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 13:57:58,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 13:57:58,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31
[2023-12-02 13:57:58,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22
[2023-12-02 13:57:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:57:59,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:57:59,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:57:59,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322535676]
[2023-12-02 13:57:59,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322535676] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:57:59,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:57:59,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2023-12-02 13:57:59,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103941205]
[2023-12-02 13:57:59,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:57:59,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-12-02 13:57:59,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:57:59,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-12-02 13:57:59,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-02 13:57:59,031 INFO L87 Difference]: Start difference. First operand 111 states and 156 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:58:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:58:02,938 INFO L93 Difference]: Finished difference Result 288 states and 402 transitions.
[2023-12-02 13:58:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2023-12-02 13:58:02,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101
[2023-12-02 13:58:02,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:58:02,941 INFO L225 Difference]: With dead ends: 288
[2023-12-02 13:58:02,941 INFO L226 Difference]: Without dead ends: 178
[2023-12-02 13:58:02,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182
[2023-12-02 13:58:02,942 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 255 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2023-12-02 13:58:02,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 505 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 869 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time]
[2023-12-02 13:58:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states.
[2023-12-02 13:58:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 115.
[2023-12-02 13:58:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 101 states have (on average 1.3663366336633664) internal successors, (138), 101 states have internal predecessors, (138), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:58:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 162 transitions.
[2023-12-02 13:58:02,952 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 162 transitions. Word has length 101
[2023-12-02 13:58:02,953 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:58:02,953 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 162 transitions.
[2023-12-02 13:58:02,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:58:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 162 transitions.
[2023-12-02 13:58:02,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2023-12-02 13:58:02,954 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:58:02,954 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:58:02,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (14)] Ended with exit code 0
[2023-12-02 13:58:03,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:58:03,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:58:03,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:58:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash -738162804, now seen corresponding path program 1 times
[2023-12-02 13:58:03,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:58:03,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800691178]
[2023-12-02 13:58:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:58:03,156 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
[2023-12-02 13:58:03,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:58:03,157 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:58:03,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (15)] Waiting until timeout for monitored process
[2023-12-02 13:58:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:58:03,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-02 13:58:03,368 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:58:03,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20
[2023-12-02 13:58:03,477 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:58:03,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:58:03,478 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:58:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800691178]
[2023-12-02 13:58:03,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800691178] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:58:03,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:58:03,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 13:58:03,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041007632]
[2023-12-02 13:58:03,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:58:03,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 13:58:03,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:58:03,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 13:58:03,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-02 13:58:03,479 INFO L87 Difference]: Start difference. First operand 115 states and 162 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:58:04,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:58:04,690 INFO L93 Difference]: Finished difference Result 261 states and 367 transitions.
[2023-12-02 13:58:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-12-02 13:58:04,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101
[2023-12-02 13:58:04,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:58:04,692 INFO L225 Difference]: With dead ends: 261
[2023-12-02 13:58:04,692 INFO L226 Difference]: Without dead ends: 147
[2023-12-02 13:58:04,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-02 13:58:04,693 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 95 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2023-12-02 13:58:04,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 317 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2023-12-02 13:58:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2023-12-02 13:58:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 115.
[2023-12-02 13:58:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 101 states have (on average 1.3663366336633664) internal successors, (138), 101 states have internal predecessors, (138), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:58:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 162 transitions.
[2023-12-02 13:58:04,702 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 162 transitions. Word has length 101
[2023-12-02 13:58:04,702 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:58:04,702 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 162 transitions.
[2023-12-02 13:58:04,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:58:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 162 transitions.
[2023-12-02 13:58:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2023-12-02 13:58:04,704 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:58:04,704 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:58:04,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (15)] Forceful destruction successful, exit code 0
[2023-12-02 13:58:04,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:58:04,904 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:58:04,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:58:04,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1533878551, now seen corresponding path program 1 times
[2023-12-02 13:58:04,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:58:04,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297890546]
[2023-12-02 13:58:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:58:04,905 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
[2023-12-02 13:58:04,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:58:04,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:58:04,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (16)] Waiting until timeout for monitored process
[2023-12-02 13:58:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:58:05,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-02 13:58:05,100 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:58:05,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20
[2023-12-02 13:58:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:58:05,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:58:05,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:58:05,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297890546]
[2023-12-02 13:58:05,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297890546] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:58:05,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:58:05,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 13:58:05,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319524720]
[2023-12-02 13:58:05,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:58:05,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 13:58:05,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:58:05,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 13:58:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-02 13:58:05,205 INFO L87 Difference]: Start difference. First operand 115 states and 162 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:58:06,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:58:06,065 INFO L93 Difference]: Finished difference Result 227 states and 320 transitions.
[2023-12-02 13:58:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-12-02 13:58:06,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 102
[2023-12-02 13:58:06,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:58:06,067 INFO L225 Difference]: With dead ends: 227
[2023-12-02 13:58:06,067 INFO L226 Difference]: Without dead ends: 113
[2023-12-02 13:58:06,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-12-02 13:58:06,068 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 2 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-12-02 13:58:06,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 346 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-12-02 13:58:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2023-12-02 13:58:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113.
[2023-12-02 13:58:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 99 states have (on average 1.3434343434343434) internal successors, (133), 99 states have internal predecessors, (133), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:58:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 157 transitions.
[2023-12-02 13:58:06,074 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 157 transitions. Word has length 102
[2023-12-02 13:58:06,075 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:58:06,075 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 157 transitions.
[2023-12-02 13:58:06,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:58:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 157 transitions.
[2023-12-02 13:58:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2023-12-02 13:58:06,076 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:58:06,076 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:58:06,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (16)] Forceful destruction successful, exit code 0
[2023-12-02 13:58:06,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:58:06,277 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:58:06,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:58:06,277 INFO L85 PathProgramCache]: Analyzing trace with hash 766944039, now seen corresponding path program 1 times
[2023-12-02 13:58:06,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:58:06,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692860562]
[2023-12-02 13:58:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:58:06,278 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
[2023-12-02 13:58:06,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:58:06,279 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:58:06,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (17)] Waiting until timeout for monitored process
[2023-12-02 13:58:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:58:06,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-12-02 13:58:06,523 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:58:06,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 13:58:07,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 13:58:07,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 13:58:09,345 INFO L349 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size
[2023-12-02 13:58:09,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 34
[2023-12-02 13:58:09,519 INFO L349 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2023-12-02 13:58:09,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48
[2023-12-02 13:58:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 93 proven. 89 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked.
[2023-12-02 13:58:09,698 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 13:58:09,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:58:09,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692860562]
[2023-12-02 13:58:09,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692860562] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:58:09,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [499138606]
[2023-12-02 13:58:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:58:09,990 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 13:58:09,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 13:58:09,991 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 13:58:09,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process
[2023-12-02 13:58:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:58:10,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 22 conjunts are in the unsatisfiable core
[2023-12-02 13:58:10,542 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:58:11,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8
[2023-12-02 13:58:12,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 13:58:12,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 13:58:13,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26
[2023-12-02 13:58:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 99 proven. 89 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2023-12-02 13:58:13,432 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 13:58:13,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [499138606] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:58:13,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616346304]
[2023-12-02 13:58:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:58:13,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 13:58:13,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:58:13,486 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 13:58:13,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-12-02 13:58:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:58:13,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-02 13:58:13,882 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:58:14,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2023-12-02 13:58:14,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 13:58:14,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 13:58:17,656 INFO L349 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size
[2023-12-02 13:58:17,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 34
[2023-12-02 13:58:17,798 INFO L349 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2023-12-02 13:58:17,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48
[2023-12-02 13:58:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 93 proven. 89 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked.
[2023-12-02 13:58:18,125 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 13:58:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616346304] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:58:18,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 13:58:18,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 20
[2023-12-02 13:58:18,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262140112]
[2023-12-02 13:58:18,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 13:58:18,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2023-12-02 13:58:18,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:58:18,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2023-12-02 13:58:18,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600
[2023-12-02 13:58:18,179 INFO L87 Difference]: Start difference. First operand 113 states and 157 transitions. Second operand has 21 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 8 states have call successors, (24), 7 states have call predecessors, (24), 8 states have return successors, (24), 6 states have call predecessors, (24), 8 states have call successors, (24)
[2023-12-02 13:58:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:58:23,340 INFO L93 Difference]: Finished difference Result 277 states and 378 transitions.
[2023-12-02 13:58:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2023-12-02 13:58:23,341 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 8 states have call successors, (24), 7 states have call predecessors, (24), 8 states have return successors, (24), 6 states have call predecessors, (24), 8 states have call successors, (24) Word has length 102
[2023-12-02 13:58:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:58:23,342 INFO L225 Difference]: With dead ends: 277
[2023-12-02 13:58:23,342 INFO L226 Difference]: Without dead ends: 165
[2023-12-02 13:58:23,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 349 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056
[2023-12-02 13:58:23,344 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 317 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2023-12-02 13:58:23,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 472 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2023-12-02 13:58:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2023-12-02 13:58:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119.
[2023-12-02 13:58:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 104 states have internal predecessors, (138), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:58:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions.
[2023-12-02 13:58:23,355 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 102
[2023-12-02 13:58:23,355 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:58:23,355 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions.
[2023-12-02 13:58:23,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 8 states have call successors, (24), 7 states have call predecessors, (24), 8 states have return successors, (24), 6 states have call predecessors, (24), 8 states have call successors, (24)
[2023-12-02 13:58:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions.
[2023-12-02 13:58:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2023-12-02 13:58:23,356 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:58:23,357 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:58:23,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0
[2023-12-02 13:58:23,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (17)] Forceful destruction successful, exit code 0
[2023-12-02 13:58:23,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-12-02 13:58:23,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 13:58:23,958 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:58:23,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:58:23,958 INFO L85 PathProgramCache]: Analyzing trace with hash 152025442, now seen corresponding path program 1 times
[2023-12-02 13:58:23,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:58:23,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364916773]
[2023-12-02 13:58:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:58:23,959 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
[2023-12-02 13:58:23,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:58:23,959 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:58:23,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (20)] Waiting until timeout for monitored process
[2023-12-02 13:58:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:58:24,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-02 13:58:24,212 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:58:24,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:24,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:24,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:24,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:25,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:25,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:25,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2023-12-02 13:58:25,693 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 13:58:25,829 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:58:25,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364916773]
[2023-12-02 13:58:25,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364916773] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:58:25,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1549032910]
[2023-12-02 13:58:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:58:25,829 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 13:58:25,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 13:58:25,830 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 13:58:25,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process
[2023-12-02 13:58:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:58:26,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-02 13:58:26,402 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:58:26,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:26,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:26,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:27,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:27,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:27,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:27,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 13:58:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2023-12-02 13:58:27,679 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 13:58:27,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1549032910] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:58:27,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515639069]
[2023-12-02 13:58:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:58:27,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 13:58:27,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:58:27,727 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 13:58:27,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-12-02 13:58:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:58:28,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-12-02 13:58:28,241 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:58:29,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16
[2023-12-02 13:58:29,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 13:58:29,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 38
[2023-12-02 13:58:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:58:29,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:58:29,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515639069] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:58:29,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-12-02 13:58:29,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 7] total 14
[2023-12-02 13:58:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675346245]
[2023-12-02 13:58:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:58:29,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-02 13:58:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:58:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-02 13:58:29,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272
[2023-12-02 13:58:29,340 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:58:31,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:58:31,606 INFO L93 Difference]: Finished difference Result 296 states and 402 transitions.
[2023-12-02 13:58:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2023-12-02 13:58:31,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103
[2023-12-02 13:58:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:58:31,608 INFO L225 Difference]: With dead ends: 296
[2023-12-02 13:58:31,608 INFO L226 Difference]: Without dead ends: 178
[2023-12-02 13:58:31,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420
[2023-12-02 13:58:31,610 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 262 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2023-12-02 13:58:31,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 306 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2023-12-02 13:58:31,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states.
[2023-12-02 13:58:31,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 113.
[2023-12-02 13:58:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 98 states have (on average 1.316326530612245) internal successors, (129), 98 states have internal predecessors, (129), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:58:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 153 transitions.
[2023-12-02 13:58:31,618 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 153 transitions. Word has length 103
[2023-12-02 13:58:31,618 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:58:31,618 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 153 transitions.
[2023-12-02 13:58:31,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:58:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 153 transitions.
[2023-12-02 13:58:31,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2023-12-02 13:58:31,619 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:58:31,619 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:58:31,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (20)] Ended with exit code 0
[2023-12-02 13:58:31,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2023-12-02 13:58:32,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0
[2023-12-02 13:58:32,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt
[2023-12-02 13:58:32,222 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:58:32,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:58:32,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1141804050, now seen corresponding path program 1 times
[2023-12-02 13:58:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:58:32,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563366224]
[2023-12-02 13:58:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:58:32,225 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
[2023-12-02 13:58:32,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:58:32,226 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:58:32,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (23)] Waiting until timeout for monitored process
[2023-12-02 13:58:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:58:32,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-02 13:58:32,416 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:58:32,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 13:58:32,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 41
[2023-12-02 13:58:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:58:32,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:58:32,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:58:32,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563366224]
[2023-12-02 13:58:32,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563366224] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:58:32,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:58:32,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-02 13:58:32,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783453769]
[2023-12-02 13:58:32,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:58:32,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-02 13:58:32,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:58:32,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-02 13:58:32,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-02 13:58:32,595 INFO L87 Difference]: Start difference. First operand 113 states and 153 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:58:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:58:34,034 INFO L93 Difference]: Finished difference Result 253 states and 341 transitions.
[2023-12-02 13:58:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-12-02 13:58:34,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103
[2023-12-02 13:58:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:58:34,036 INFO L225 Difference]: With dead ends: 253
[2023-12-02 13:58:34,036 INFO L226 Difference]: Without dead ends: 141
[2023-12-02 13:58:34,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2023-12-02 13:58:34,037 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 60 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2023-12-02 13:58:34,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 427 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2023-12-02 13:58:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2023-12-02 13:58:34,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116.
[2023-12-02 13:58:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 101 states have (on average 1.306930693069307) internal successors, (132), 101 states have internal predecessors, (132), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:58:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 156 transitions.
[2023-12-02 13:58:34,045 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 156 transitions. Word has length 103
[2023-12-02 13:58:34,045 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:58:34,045 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 156 transitions.
[2023-12-02 13:58:34,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:58:34,045 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 156 transitions.
[2023-12-02 13:58:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105
[2023-12-02 13:58:34,046 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:58:34,046 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:58:34,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (23)] Forceful destruction successful, exit code 0
[2023-12-02 13:58:34,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:58:34,248 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:58:34,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:58:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash -102233395, now seen corresponding path program 1 times
[2023-12-02 13:58:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:58:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767719280]
[2023-12-02 13:58:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:58:34,251 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
[2023-12-02 13:58:34,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:58:34,254 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:58:34,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (24)] Waiting until timeout for monitored process
[2023-12-02 13:58:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:58:34,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-02 13:58:34,460 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:58:41,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 13:58:41,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49
[2023-12-02 13:58:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 13:58:47,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:58:47,057 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:58:47,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767719280]
[2023-12-02 13:58:47,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767719280] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:58:47,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:58:47,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-02 13:58:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421258224]
[2023-12-02 13:58:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:58:47,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-02 13:58:47,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:58:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-02 13:58:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-12-02 13:58:47,058 INFO L87 Difference]: Start difference. First operand 116 states and 156 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:59:08,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 13:59:15,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 13:59:17,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 13:59:20,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 13:59:27,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:59:27,743 INFO L93 Difference]: Finished difference Result 262 states and 350 transitions.
[2023-12-02 13:59:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-12-02 13:59:27,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104
[2023-12-02 13:59:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:59:27,771 INFO L225 Difference]: With dead ends: 262
[2023-12-02 13:59:27,771 INFO L226 Difference]: Without dead ends: 147
[2023-12-02 13:59:27,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2023-12-02 13:59:27,772 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 44 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time
[2023-12-02 13:59:27,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 433 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 1 Unknown, 0 Unchecked, 31.6s Time]
[2023-12-02 13:59:27,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2023-12-02 13:59:27,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 110.
[2023-12-02 13:59:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 95 states have (on average 1.305263157894737) internal successors, (124), 95 states have internal predecessors, (124), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-02 13:59:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 148 transitions.
[2023-12-02 13:59:27,779 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 148 transitions. Word has length 104
[2023-12-02 13:59:27,779 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:59:27,780 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 148 transitions.
[2023-12-02 13:59:27,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 13:59:27,780 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 148 transitions.
[2023-12-02 13:59:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2023-12-02 13:59:27,781 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 13:59:27,781 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:59:27,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (24)] Ended with exit code 0
[2023-12-02 13:59:27,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 13:59:27,981 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 13:59:27,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:59:27,982 INFO L85 PathProgramCache]: Analyzing trace with hash -662581894, now seen corresponding path program 1 times
[2023-12-02 13:59:27,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 13:59:27,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059179116]
[2023-12-02 13:59:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:59:27,982 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
[2023-12-02 13:59:27,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 13:59:27,983 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 13:59:27,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (25)] Waiting until timeout for monitored process
[2023-12-02 13:59:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:59:28,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-12-02 13:59:28,257 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:59:28,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 13:59:29,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 13:59:29,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 13:59:32,302 INFO L349 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size
[2023-12-02 13:59:32,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 34
[2023-12-02 13:59:32,512 INFO L349 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2023-12-02 13:59:32,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48
[2023-12-02 13:59:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 93 proven. 89 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked.
[2023-12-02 13:59:32,637 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 13:59:32,942 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 13:59:32,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059179116]
[2023-12-02 13:59:32,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059179116] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:59:32,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1752556181]
[2023-12-02 13:59:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:59:32,943 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 13:59:32,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 13:59:32,944 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 13:59:32,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process
[2023-12-02 13:59:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:59:33,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-12-02 13:59:33,413 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:59:34,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2023-12-02 13:59:34,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 13:59:34,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 13:59:35,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14
[2023-12-02 13:59:35,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2023-12-02 13:59:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked.
[2023-12-02 13:59:39,418 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 13:59:39,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1752556181] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:59:39,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123293689]
[2023-12-02 13:59:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:59:39,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 13:59:39,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:59:39,992 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 13:59:39,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-12-02 13:59:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:59:40,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-02 13:59:40,393 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:59:40,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2023-12-02 13:59:41,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 13:59:41,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 13:59:42,977 INFO L349 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size
[2023-12-02 13:59:42,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 34
[2023-12-02 13:59:43,155 INFO L349 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2023-12-02 13:59:43,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48
[2023-12-02 13:59:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 93 proven. 89 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked.
[2023-12-02 13:59:43,274 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 13:59:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123293689] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:59:43,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 13:59:43,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 16
[2023-12-02 13:59:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537922647]
[2023-12-02 13:59:43,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 13:59:43,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2023-12-02 13:59:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 13:59:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2023-12-02 13:59:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=521, Unknown=3, NotChecked=0, Total=600
[2023-12-02 13:59:43,323 INFO L87 Difference]: Start difference. First operand 110 states and 148 transitions. Second operand has 17 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 6 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24)
[2023-12-02 13:59:48,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 13:59:52,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 13:59:56,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 13:59:58,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:02,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:05,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:11,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:13,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:15,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:19,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:21,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:23,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:25,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:27,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:29,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:31,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:33,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:34,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:36,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:39,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:41,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:43,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:46,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:49,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:51,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:53,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:55,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:57,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:00:59,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:01,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:03,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:05,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:08,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:10,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:12,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:13,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:14,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:16,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:18,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:20,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:01:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:01:23,405 INFO L93 Difference]: Finished difference Result 538 states and 711 transitions.
[2023-12-02 14:01:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2023-12-02 14:01:23,406 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 6 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 105
[2023-12-02 14:01:23,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:01:23,409 INFO L225 Difference]: With dead ends: 538
[2023-12-02 14:01:23,409 INFO L226 Difference]: Without dead ends: 429
[2023-12-02 14:01:23,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 368 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=502, Invalid=2575, Unknown=3, NotChecked=0, Total=3080
[2023-12-02 14:01:23,412 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 840 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 44 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.6s IncrementalHoareTripleChecker+Time
[2023-12-02 14:01:23,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 623 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1188 Invalid, 28 Unknown, 0 Unchecked, 82.6s Time]
[2023-12-02 14:01:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states.
[2023-12-02 14:01:23,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 178.
[2023-12-02 14:01:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 149 states have (on average 1.2751677852348993) internal successors, (190), 149 states have internal predecessors, (190), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:01:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 238 transitions.
[2023-12-02 14:01:23,437 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 238 transitions. Word has length 105
[2023-12-02 14:01:23,437 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:01:23,438 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 238 transitions.
[2023-12-02 14:01:23,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 6 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24)
[2023-12-02 14:01:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 238 transitions.
[2023-12-02 14:01:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2023-12-02 14:01:23,439 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:01:23,439 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:01:23,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2023-12-02 14:01:23,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (25)] Ended with exit code 0
[2023-12-02 14:01:23,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0
[2023-12-02 14:01:24,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt
[2023-12-02 14:01:24,040 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:01:24,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:01:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash 481311932, now seen corresponding path program 1 times
[2023-12-02 14:01:24,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:01:24,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161099823]
[2023-12-02 14:01:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:01:24,041 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
[2023-12-02 14:01:24,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:01:24,041 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:01:24,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (28)] Waiting until timeout for monitored process
[2023-12-02 14:01:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:01:24,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-02 14:01:24,315 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:01:25,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:01:25,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:01:25,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:01:25,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19
[2023-12-02 14:01:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked.
[2023-12-02 14:01:26,029 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:01:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:01:26,303 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:01:26,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161099823]
[2023-12-02 14:01:26,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161099823] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:01:26,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-02 14:01:26,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2023-12-02 14:01:26,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126613215]
[2023-12-02 14:01:26,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:01:26,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-02 14:01:26,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:01:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-02 14:01:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-02 14:01:26,305 INFO L87 Difference]: Start difference. First operand 178 states and 238 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:01:27,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:01:27,934 INFO L93 Difference]: Finished difference Result 230 states and 300 transitions.
[2023-12-02 14:01:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-12-02 14:01:27,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105
[2023-12-02 14:01:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:01:27,937 INFO L225 Difference]: With dead ends: 230
[2023-12-02 14:01:27,937 INFO L226 Difference]: Without dead ends: 228
[2023-12-02 14:01:27,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2023-12-02 14:01:27,938 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 43 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2023-12-02 14:01:27,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 426 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2023-12-02 14:01:27,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states.
[2023-12-02 14:01:27,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 216.
[2023-12-02 14:01:27,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 187 states have (on average 1.2566844919786095) internal successors, (235), 187 states have internal predecessors, (235), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:01:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 283 transitions.
[2023-12-02 14:01:27,958 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 283 transitions. Word has length 105
[2023-12-02 14:01:27,958 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:01:27,958 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 283 transitions.
[2023-12-02 14:01:27,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:01:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 283 transitions.
[2023-12-02 14:01:27,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2023-12-02 14:01:27,959 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:01:27,960 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:01:27,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (28)] Ended with exit code 0
[2023-12-02 14:01:28,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:01:28,164 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:01:28,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:01:28,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1283151059, now seen corresponding path program 1 times
[2023-12-02 14:01:28,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:01:28,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468495299]
[2023-12-02 14:01:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:01:28,165 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
[2023-12-02 14:01:28,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:01:28,166 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:01:28,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (29)] Waiting until timeout for monitored process
[2023-12-02 14:01:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:01:28,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-12-02 14:01:28,449 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:01:29,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:01:29,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:01:29,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:01:30,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:01:30,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 22
[2023-12-02 14:01:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2023-12-02 14:01:30,615 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:01:30,928 WARN L854 $PredicateComparison]: unable to prove that (forall ((|~#unsigned_char_Array_0~0.offset| (_ BitVec 32)) (v_ArrVal_551 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (bvneg (let ((.cse0 (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_551))) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (select (select .cse0 |c_~#unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |~#unsigned_char_Array_0~0.offset|))))) ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 |c_~#signed_short_int_Array_0~0.base|) (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))))))))) is different from false
[2023-12-02 14:01:30,974 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:01:30,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468495299]
[2023-12-02 14:01:30,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468495299] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:01:30,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1326390403]
[2023-12-02 14:01:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:01:30,975 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:01:30,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:01:30,976 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:01:30,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process
[2023-12-02 14:01:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:01:32,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-12-02 14:01:32,044 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:01:33,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2023-12-02 14:01:34,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:01:34,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:01:35,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:01:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 93 proven. 89 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked.
[2023-12-02 14:01:35,543 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:01:39,945 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_step_#t~mem33#1| (_ BitVec 8)) (|ULTIMATE.start_step_~stepLocal_1~0#1| (_ BitVec 8)) (|ULTIMATE.start_step_#t~mem34#1| (_ BitVec 8))) (not (= ((_ zero_extend 24) |ULTIMATE.start_step_~stepLocal_1~0#1|) (bvadd ((_ zero_extend 24) |ULTIMATE.start_step_#t~mem34#1|) (bvneg (bvadd (bvneg ((_ zero_extend 24) |ULTIMATE.start_step_#t~mem33#1|)) ((_ sign_extend 16) ((_ extract 15 0) (select (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_574) |c_~#signed_short_int_Array_0~0.base|) (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))))))))) is different from false
[2023-12-02 14:01:39,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1326390403] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:01:39,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360426803]
[2023-12-02 14:01:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:01:39,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:01:39,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:01:39,995 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:01:39,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-12-02 14:01:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:01:40,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-02 14:01:40,468 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:01:40,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 50
[2023-12-02 14:01:41,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:01:41,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 52
[2023-12-02 14:01:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked.
[2023-12-02 14:01:42,282 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:01:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:01:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360426803] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:01:43,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences.
[2023-12-02 14:01:43,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9, 12] total 34
[2023-12-02 14:01:43,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454907531]
[2023-12-02 14:01:43,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:01:43,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-02 14:01:43,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:01:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-02 14:01:43,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1349, Unknown=4, NotChecked=150, Total=1640
[2023-12-02 14:01:43,819 INFO L87 Difference]: Start difference. First operand 216 states and 283 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:01:59,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:01:59,045 INFO L93 Difference]: Finished difference Result 439 states and 582 transitions.
[2023-12-02 14:01:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2023-12-02 14:01:59,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105
[2023-12-02 14:01:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:01:59,049 INFO L225 Difference]: With dead ends: 439
[2023-12-02 14:01:59,049 INFO L226 Difference]: Without dead ends: 307
[2023-12-02 14:01:59,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=225, Invalid=2229, Unknown=4, NotChecked=194, Total=2652
[2023-12-02 14:01:59,051 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 194 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time
[2023-12-02 14:01:59,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 798 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time]
[2023-12-02 14:01:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states.
[2023-12-02 14:01:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 224.
[2023-12-02 14:01:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 195 states have (on average 1.2615384615384615) internal successors, (246), 195 states have internal predecessors, (246), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:01:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 294 transitions.
[2023-12-02 14:01:59,076 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 294 transitions. Word has length 105
[2023-12-02 14:01:59,076 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:01:59,076 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 294 transitions.
[2023-12-02 14:01:59,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:01:59,076 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 294 transitions.
[2023-12-02 14:01:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2023-12-02 14:01:59,077 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:01:59,078 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:01:59,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (29)] Forceful destruction successful, exit code 0
[2023-12-02 14:01:59,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0
[2023-12-02 14:01:59,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-12-02 14:01:59,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:01:59,679 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:01:59,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:01:59,679 INFO L85 PathProgramCache]: Analyzing trace with hash 890124049, now seen corresponding path program 1 times
[2023-12-02 14:01:59,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:01:59,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001132844]
[2023-12-02 14:01:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:01:59,679 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
[2023-12-02 14:01:59,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:01:59,680 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:01:59,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (32)] Waiting until timeout for monitored process
[2023-12-02 14:01:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:01:59,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-12-02 14:01:59,989 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:02:00,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:02:01,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:02:01,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:02:01,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:02:02,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 22
[2023-12-02 14:02:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2023-12-02 14:02:02,231 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:02:02,534 WARN L854 $PredicateComparison]: unable to prove that (forall ((|~#unsigned_char_Array_0~0.offset| (_ BitVec 32)) (v_ArrVal_616 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (bvneg (let ((.cse0 (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_616))) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (select (select .cse0 |c_~#unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |~#unsigned_char_Array_0~0.offset|))))) ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 |c_~#signed_short_int_Array_0~0.base|) (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32)))))))) (_ bv0 32)))) is different from false
[2023-12-02 14:02:02,580 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:02:02,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001132844]
[2023-12-02 14:02:02,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001132844] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:02:02,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [695145774]
[2023-12-02 14:02:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:02:02,580 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:02:02,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:02:02,581 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:02:02,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process
[2023-12-02 14:02:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:02:03,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-12-02 14:02:03,573 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:02:04,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8
[2023-12-02 14:02:06,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:02:06,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:02:07,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:02:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 99 proven. 89 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2023-12-02 14:02:07,688 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:02:11,874 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_step_#t~mem33#1| (_ BitVec 8)) (|ULTIMATE.start_step_~stepLocal_1~0#1| (_ BitVec 8)) (v_ArrVal_638 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_step_#t~mem34#1| (_ BitVec 8))) (not (= (bvadd ((_ zero_extend 24) |ULTIMATE.start_step_#t~mem34#1|) (bvneg (bvadd (bvneg ((_ zero_extend 24) |ULTIMATE.start_step_#t~mem33#1|)) ((_ sign_extend 16) ((_ extract 15 0) (select (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_638) |c_~#signed_short_int_Array_0~0.base|) (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32)))))))) ((_ zero_extend 24) |ULTIMATE.start_step_~stepLocal_1~0#1|)))) is different from false
[2023-12-02 14:02:11,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [695145774] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:02:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526148700]
[2023-12-02 14:02:11,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:02:11,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:02:11,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:02:11,935 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:02:11,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-12-02 14:02:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:02:12,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-02 14:02:12,656 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:02:13,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:02:13,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 65
[2023-12-02 14:02:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked.
[2023-12-02 14:02:13,939 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:02:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:02:16,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526148700] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:02:16,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences.
[2023-12-02 14:02:16,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 10, 8] total 33
[2023-12-02 14:02:16,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79861935]
[2023-12-02 14:02:16,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:02:16,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-12-02 14:02:16,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:02:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-12-02 14:02:16,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1265, Unknown=3, NotChecked=146, Total=1560
[2023-12-02 14:02:16,053 INFO L87 Difference]: Start difference. First operand 224 states and 294 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:02:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:02:24,751 INFO L93 Difference]: Finished difference Result 468 states and 621 transitions.
[2023-12-02 14:02:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2023-12-02 14:02:24,753 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105
[2023-12-02 14:02:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:02:24,755 INFO L225 Difference]: With dead ends: 468
[2023-12-02 14:02:24,755 INFO L226 Difference]: Without dead ends: 328
[2023-12-02 14:02:24,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=247, Invalid=2308, Unknown=3, NotChecked=198, Total=2756
[2023-12-02 14:02:24,757 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 202 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time
[2023-12-02 14:02:24,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 960 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time]
[2023-12-02 14:02:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states.
[2023-12-02 14:02:24,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 224.
[2023-12-02 14:02:24,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 195 states have (on average 1.2615384615384615) internal successors, (246), 195 states have internal predecessors, (246), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:02:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 294 transitions.
[2023-12-02 14:02:24,775 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 294 transitions. Word has length 105
[2023-12-02 14:02:24,775 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:02:24,775 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 294 transitions.
[2023-12-02 14:02:24,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:02:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 294 transitions.
[2023-12-02 14:02:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2023-12-02 14:02:24,776 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:02:24,776 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:02:24,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (32)] Ended with exit code 0
[2023-12-02 14:02:24,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0
[2023-12-02 14:02:25,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2023-12-02 14:02:25,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:02:25,377 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:02:25,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:02:25,378 INFO L85 PathProgramCache]: Analyzing trace with hash -305196843, now seen corresponding path program 1 times
[2023-12-02 14:02:25,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:02:25,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049780083]
[2023-12-02 14:02:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:02:25,378 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
[2023-12-02 14:02:25,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:02:25,379 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:02:25,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (35)] Waiting until timeout for monitored process
[2023-12-02 14:02:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:02:25,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-12-02 14:02:25,660 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:02:26,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:02:26,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:02:27,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:02:27,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:02:27,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 22
[2023-12-02 14:02:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2023-12-02 14:02:27,909 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:02:28,244 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_680 (Array (_ BitVec 32) (_ BitVec 32))) (|~#unsigned_char_Array_0~0.offset| (_ BitVec 32))) (not (= (bvneg (let ((.cse0 (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_680))) (bvadd ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 |c_~#signed_short_int_Array_0~0.base|) (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))) (bvneg ((_ zero_extend 24) ((_ extract 7 0) (select (select .cse0 |c_~#unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |~#unsigned_char_Array_0~0.offset|)))))))) (_ bv0 32)))) is different from false
[2023-12-02 14:02:28,292 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:02:28,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049780083]
[2023-12-02 14:02:28,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049780083] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:02:28,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [402601761]
[2023-12-02 14:02:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:02:28,293 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:02:28,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:02:28,294 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:02:28,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process
[2023-12-02 14:02:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:02:29,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-12-02 14:02:29,233 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:02:30,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8
[2023-12-02 14:02:31,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:02:32,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:02:33,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:02:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 99 proven. 89 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2023-12-02 14:02:33,434 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:02:39,351 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_step_#t~mem33#1| (_ BitVec 8)) (|ULTIMATE.start_step_~stepLocal_1~0#1| (_ BitVec 8)) (|ULTIMATE.start_step_#t~mem34#1| (_ BitVec 8)) (v_ArrVal_702 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ zero_extend 24) |ULTIMATE.start_step_~stepLocal_1~0#1|) (bvadd ((_ zero_extend 24) |ULTIMATE.start_step_#t~mem34#1|) (bvneg (bvadd (bvneg ((_ zero_extend 24) |ULTIMATE.start_step_#t~mem33#1|)) ((_ sign_extend 16) ((_ extract 15 0) (select (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_702) |c_~#signed_short_int_Array_0~0.base|) (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))))))))) is different from false
[2023-12-02 14:02:39,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [402601761] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:02:39,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689642450]
[2023-12-02 14:02:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:02:39,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:02:39,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:02:39,402 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:02:39,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-12-02 14:02:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:02:39,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-02 14:02:39,921 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:02:40,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:02:40,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33
[2023-12-02 14:02:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:02:40,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:02:40,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689642450] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:02:40,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-12-02 14:02:40,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 10] total 22
[2023-12-02 14:02:40,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345868748]
[2023-12-02 14:02:40,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:02:40,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 14:02:40,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:02:40,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 14:02:40,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=598, Unknown=4, NotChecked=102, Total=812
[2023-12-02 14:02:40,595 INFO L87 Difference]: Start difference. First operand 224 states and 294 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:02:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:02:43,858 INFO L93 Difference]: Finished difference Result 406 states and 536 transitions.
[2023-12-02 14:02:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-12-02 14:02:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105
[2023-12-02 14:02:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:02:43,863 INFO L225 Difference]: With dead ends: 406
[2023-12-02 14:02:43,863 INFO L226 Difference]: Without dead ends: 266
[2023-12-02 14:02:43,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=112, Invalid=648, Unknown=4, NotChecked=106, Total=870
[2023-12-02 14:02:43,865 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 59 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-12-02 14:02:43,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 358 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-12-02 14:02:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states.
[2023-12-02 14:02:43,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 224.
[2023-12-02 14:02:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 195 states have (on average 1.2564102564102564) internal successors, (245), 195 states have internal predecessors, (245), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:02:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 293 transitions.
[2023-12-02 14:02:43,898 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 293 transitions. Word has length 105
[2023-12-02 14:02:43,898 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:02:43,898 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 293 transitions.
[2023-12-02 14:02:43,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:02:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 293 transitions.
[2023-12-02 14:02:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2023-12-02 14:02:43,900 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:02:43,900 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:02:43,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (35)] Ended with exit code 0
[2023-12-02 14:02:44,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0
[2023-12-02 14:02:44,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0
[2023-12-02 14:02:44,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:02:44,501 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:02:44,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:02:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash -698223853, now seen corresponding path program 1 times
[2023-12-02 14:02:44,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:02:44,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382100737]
[2023-12-02 14:02:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:02:44,502 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
[2023-12-02 14:02:44,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:02:44,503 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:02:44,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (38)] Waiting until timeout for monitored process
[2023-12-02 14:02:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:02:44,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-12-02 14:02:44,846 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:02:45,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:02:46,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:02:46,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:02:46,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:02:47,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 22
[2023-12-02 14:02:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2023-12-02 14:02:47,331 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:02:47,682 WARN L854 $PredicateComparison]: unable to prove that (forall ((|~#unsigned_char_Array_0~0.offset| (_ BitVec 32)) (v_ArrVal_744 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (bvneg (let ((.cse0 (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_744))) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (select (select .cse0 |c_~#unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |~#unsigned_char_Array_0~0.offset|))))) ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 |c_~#signed_short_int_Array_0~0.base|) (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32)))))))) (_ bv0 32)))) is different from false
[2023-12-02 14:02:47,730 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:02:47,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382100737]
[2023-12-02 14:02:47,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382100737] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:02:47,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [363138943]
[2023-12-02 14:02:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:02:47,731 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:02:47,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:02:47,732 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:02:47,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process
[2023-12-02 14:02:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:02:48,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-12-02 14:02:48,856 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:02:50,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8
[2023-12-02 14:02:51,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:02:52,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:02:52,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:02:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 99 proven. 89 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2023-12-02 14:02:53,393 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:02:57,921 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_step_#t~mem33#1| (_ BitVec 8)) (|ULTIMATE.start_step_~stepLocal_1~0#1| (_ BitVec 8)) (|ULTIMATE.start_step_#t~mem34#1| (_ BitVec 8)) (v_ArrVal_766 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (bvadd ((_ zero_extend 24) |ULTIMATE.start_step_#t~mem34#1|) (bvneg (bvadd (bvneg ((_ zero_extend 24) |ULTIMATE.start_step_#t~mem33#1|)) ((_ sign_extend 16) ((_ extract 15 0) (select (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_766) |c_~#signed_short_int_Array_0~0.base|) (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32)))))))) ((_ zero_extend 24) |ULTIMATE.start_step_~stepLocal_1~0#1|)))) is different from false
[2023-12-02 14:02:57,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [363138943] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:02:57,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33923863]
[2023-12-02 14:02:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:02:57,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:02:57,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:02:57,972 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:02:57,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-12-02 14:02:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:02:58,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-02 14:02:58,513 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:02:59,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2023-12-02 14:02:59,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:02:59,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:03:00,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:03:00,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 22
[2023-12-02 14:03:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2023-12-02 14:03:00,320 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:03:00,395 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_790 (Array (_ BitVec 32) (_ BitVec 32))) (|~#unsigned_char_Array_0~0.offset| (_ BitVec 32))) (not (= (bvneg (let ((.cse0 (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_790))) (bvadd ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 |c_~#signed_short_int_Array_0~0.base|) (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))) (bvneg ((_ zero_extend 24) ((_ extract 7 0) (select (select .cse0 |c_~#unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |~#unsigned_char_Array_0~0.offset|)))))))) (_ bv0 32)))) is different from false
[2023-12-02 14:03:00,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33923863] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:03:00,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 14:03:00,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 18
[2023-12-02 14:03:00,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851675552]
[2023-12-02 14:03:00,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 14:03:00,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2023-12-02 14:03:00,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:03:00,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2023-12-02 14:03:00,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=456, Unknown=5, NotChecked=138, Total=702
[2023-12-02 14:03:00,442 INFO L87 Difference]: Start difference. First operand 224 states and 293 transitions. Second operand has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 7 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (24), 5 states have call predecessors, (24), 7 states have call successors, (24)
[2023-12-02 14:03:02,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:03:05,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:03:05,840 INFO L93 Difference]: Finished difference Result 352 states and 459 transitions.
[2023-12-02 14:03:05,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-12-02 14:03:05,841 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 7 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (24), 5 states have call predecessors, (24), 7 states have call successors, (24) Word has length 105
[2023-12-02 14:03:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:03:05,842 INFO L225 Difference]: With dead ends: 352
[2023-12-02 14:03:05,842 INFO L226 Difference]: Without dead ends: 212
[2023-12-02 14:03:05,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=210, Invalid=727, Unknown=5, NotChecked=180, Total=1122
[2023-12-02 14:03:05,844 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 108 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2023-12-02 14:03:05,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 320 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time]
[2023-12-02 14:03:05,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states.
[2023-12-02 14:03:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 204.
[2023-12-02 14:03:05,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 175 states have (on average 1.2114285714285715) internal successors, (212), 175 states have internal predecessors, (212), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:03:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 260 transitions.
[2023-12-02 14:03:05,859 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 260 transitions. Word has length 105
[2023-12-02 14:03:05,859 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:03:05,859 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 260 transitions.
[2023-12-02 14:03:05,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 7 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (24), 5 states have call predecessors, (24), 7 states have call successors, (24)
[2023-12-02 14:03:05,859 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 260 transitions.
[2023-12-02 14:03:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2023-12-02 14:03:05,860 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:03:05,860 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:03:05,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (38)] Ended with exit code 0
[2023-12-02 14:03:06,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2023-12-02 14:03:06,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0
[2023-12-02 14:03:06,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt
[2023-12-02 14:03:06,461 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:03:06,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:03:06,461 INFO L85 PathProgramCache]: Analyzing trace with hash -926659019, now seen corresponding path program 1 times
[2023-12-02 14:03:06,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:03:06,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662733223]
[2023-12-02 14:03:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:03:06,462 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
[2023-12-02 14:03:06,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:03:06,463 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:03:06,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (41)] Waiting until timeout for monitored process
[2023-12-02 14:03:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:03:06,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-12-02 14:03:06,787 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:03:07,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:03:07,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10
[2023-12-02 14:03:07,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:03:07,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32
[2023-12-02 14:03:07,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25
[2023-12-02 14:03:08,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:03:08,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 34
[2023-12-02 14:03:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked.
[2023-12-02 14:03:08,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:03:08,375 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:03:08,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662733223]
[2023-12-02 14:03:08,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662733223] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:03:08,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:03:08,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-12-02 14:03:08,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016342589]
[2023-12-02 14:03:08,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:03:08,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-12-02 14:03:08,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:03:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-12-02 14:03:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-02 14:03:08,377 INFO L87 Difference]: Start difference. First operand 204 states and 260 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)
[2023-12-02 14:03:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:03:12,668 INFO L93 Difference]: Finished difference Result 447 states and 564 transitions.
[2023-12-02 14:03:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2023-12-02 14:03:12,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106
[2023-12-02 14:03:12,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:03:12,671 INFO L225 Difference]: With dead ends: 447
[2023-12-02 14:03:12,671 INFO L226 Difference]: Without dead ends: 327
[2023-12-02 14:03:12,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420
[2023-12-02 14:03:12,672 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 268 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2023-12-02 14:03:12,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 462 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2023-12-02 14:03:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states.
[2023-12-02 14:03:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 261.
[2023-12-02 14:03:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 228 states have (on average 1.1973684210526316) internal successors, (273), 228 states have internal predecessors, (273), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:03:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 321 transitions.
[2023-12-02 14:03:12,700 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 321 transitions. Word has length 106
[2023-12-02 14:03:12,700 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:03:12,700 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 321 transitions.
[2023-12-02 14:03:12,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)
[2023-12-02 14:03:12,701 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 321 transitions.
[2023-12-02 14:03:12,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2023-12-02 14:03:12,702 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:03:12,702 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:03:12,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (41)] Ended with exit code 0
[2023-12-02 14:03:12,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:03:12,909 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:03:12,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:03:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1772569750, now seen corresponding path program 1 times
[2023-12-02 14:03:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:03:12,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090612906]
[2023-12-02 14:03:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:03:12,910 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
[2023-12-02 14:03:12,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:03:12,911 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:03:12,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (42)] Waiting until timeout for monitored process
[2023-12-02 14:03:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:03:13,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-12-02 14:03:13,157 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:03:14,364 INFO L349 Elim1Store]: treesize reduction 3, result has 88.9 percent of original size
[2023-12-02 14:03:14,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 63
[2023-12-02 14:03:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:03:14,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:03:14,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:03:14,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090612906]
[2023-12-02 14:03:14,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090612906] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:03:14,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:03:14,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-02 14:03:14,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334564681]
[2023-12-02 14:03:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:03:14,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-02 14:03:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:03:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-02 14:03:14,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-12-02 14:03:14,576 INFO L87 Difference]: Start difference. First operand 261 states and 321 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:03:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:03:17,573 INFO L93 Difference]: Finished difference Result 557 states and 686 transitions.
[2023-12-02 14:03:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-12-02 14:03:17,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 107
[2023-12-02 14:03:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:03:17,575 INFO L225 Difference]: With dead ends: 557
[2023-12-02 14:03:17,575 INFO L226 Difference]: Without dead ends: 388
[2023-12-02 14:03:17,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2023-12-02 14:03:17,576 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 89 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2023-12-02 14:03:17,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 439 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]
[2023-12-02 14:03:17,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states.
[2023-12-02 14:03:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 323.
[2023-12-02 14:03:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 290 states have (on average 1.210344827586207) internal successors, (351), 290 states have internal predecessors, (351), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:03:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 399 transitions.
[2023-12-02 14:03:17,594 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 399 transitions. Word has length 107
[2023-12-02 14:03:17,594 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:03:17,595 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 399 transitions.
[2023-12-02 14:03:17,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:03:17,595 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 399 transitions.
[2023-12-02 14:03:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2023-12-02 14:03:17,596 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:03:17,596 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:03:17,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (42)] Ended with exit code 0
[2023-12-02 14:03:17,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:03:17,797 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:03:17,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:03:17,797 INFO L85 PathProgramCache]: Analyzing trace with hash 549259549, now seen corresponding path program 1 times
[2023-12-02 14:03:17,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:03:17,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344356685]
[2023-12-02 14:03:17,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:03:17,798 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
[2023-12-02 14:03:17,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:03:17,799 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:03:17,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (43)] Waiting until timeout for monitored process
[2023-12-02 14:03:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:03:18,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-12-02 14:03:18,091 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:03:18,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:03:18,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:03:19,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:03:19,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19
[2023-12-02 14:03:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked.
[2023-12-02 14:03:19,817 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:03:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:03:20,158 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:03:20,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344356685]
[2023-12-02 14:03:20,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344356685] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:03:20,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-02 14:03:20,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13
[2023-12-02 14:03:20,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568248161]
[2023-12-02 14:03:20,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:03:20,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-02 14:03:20,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:03:20,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-02 14:03:20,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156
[2023-12-02 14:03:20,161 INFO L87 Difference]: Start difference. First operand 323 states and 399 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:03:21,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:03:21,745 INFO L93 Difference]: Finished difference Result 341 states and 420 transitions.
[2023-12-02 14:03:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2023-12-02 14:03:21,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108
[2023-12-02 14:03:21,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:03:21,755 INFO L225 Difference]: With dead ends: 341
[2023-12-02 14:03:21,755 INFO L226 Difference]: Without dead ends: 339
[2023-12-02 14:03:21,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380
[2023-12-02 14:03:21,756 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 42 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2023-12-02 14:03:21,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 476 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2023-12-02 14:03:21,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states.
[2023-12-02 14:03:21,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 326.
[2023-12-02 14:03:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 293 states have (on average 1.2150170648464165) internal successors, (356), 293 states have internal predecessors, (356), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:03:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 404 transitions.
[2023-12-02 14:03:21,773 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 404 transitions. Word has length 108
[2023-12-02 14:03:21,773 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:03:21,773 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 404 transitions.
[2023-12-02 14:03:21,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:03:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 404 transitions.
[2023-12-02 14:03:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2023-12-02 14:03:21,774 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:03:21,774 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:03:21,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (43)] Forceful destruction successful, exit code 0
[2023-12-02 14:03:21,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:03:21,975 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:03:21,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:03:21,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1415844474, now seen corresponding path program 1 times
[2023-12-02 14:03:21,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:03:21,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242391231]
[2023-12-02 14:03:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:03:21,976 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
[2023-12-02 14:03:21,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:03:21,977 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:03:21,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (44)] Waiting until timeout for monitored process
[2023-12-02 14:03:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:03:22,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-12-02 14:03:22,298 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:03:22,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:03:23,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19
[2023-12-02 14:03:23,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17
[2023-12-02 14:03:23,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:03:23,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15
[2023-12-02 14:03:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:03:23,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:03:23,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:03:23,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242391231]
[2023-12-02 14:03:23,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242391231] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:03:23,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:03:23,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2023-12-02 14:03:23,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828751798]
[2023-12-02 14:03:23,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:03:23,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-12-02 14:03:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:03:23,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-12-02 14:03:23,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2023-12-02 14:03:23,578 INFO L87 Difference]: Start difference. First operand 326 states and 404 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:03:28,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:03:28,108 INFO L93 Difference]: Finished difference Result 620 states and 780 transitions.
[2023-12-02 14:03:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2023-12-02 14:03:28,109 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108
[2023-12-02 14:03:28,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:03:28,111 INFO L225 Difference]: With dead ends: 620
[2023-12-02 14:03:28,111 INFO L226 Difference]: Without dead ends: 448
[2023-12-02 14:03:28,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=215, Invalid=541, Unknown=0, NotChecked=0, Total=756
[2023-12-02 14:03:28,112 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 289 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-12-02 14:03:28,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 563 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-12-02 14:03:28,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states.
[2023-12-02 14:03:28,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 332.
[2023-12-02 14:03:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 299 states have (on average 1.2207357859531773) internal successors, (365), 299 states have internal predecessors, (365), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:03:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 413 transitions.
[2023-12-02 14:03:28,131 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 413 transitions. Word has length 108
[2023-12-02 14:03:28,131 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:03:28,131 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 413 transitions.
[2023-12-02 14:03:28,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:03:28,131 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 413 transitions.
[2023-12-02 14:03:28,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2023-12-02 14:03:28,132 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:03:28,132 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:03:28,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (44)] Forceful destruction successful, exit code 0
[2023-12-02 14:03:28,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:03:28,333 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:03:28,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:03:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2095902844, now seen corresponding path program 1 times
[2023-12-02 14:03:28,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:03:28,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339119479]
[2023-12-02 14:03:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:03:28,334 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
[2023-12-02 14:03:28,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:03:28,335 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:03:28,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (45)] Waiting until timeout for monitored process
[2023-12-02 14:03:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:03:28,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 22 conjunts are in the unsatisfiable core
[2023-12-02 14:03:28,627 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:03:29,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:03:30,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:03:30,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:03:31,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41
[2023-12-02 14:03:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2023-12-02 14:03:31,203 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:03:31,542 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:03:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339119479]
[2023-12-02 14:03:31,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339119479] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:03:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1370592748]
[2023-12-02 14:03:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:03:31,543 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:03:31,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:03:31,544 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:03:31,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process
[2023-12-02 14:03:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:03:32,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-02 14:03:32,219 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:03:32,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10
[2023-12-02 14:03:33,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:03:34,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:03:34,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:03:34,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 23
[2023-12-02 14:03:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 99 proven. 89 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2023-12-02 14:03:35,055 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:03:35,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1370592748] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:03:35,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813406856]
[2023-12-02 14:03:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:03:35,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:03:35,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:03:35,125 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:03:35,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2023-12-02 14:03:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:03:35,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-02 14:03:35,575 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:03:35,766 INFO L349 Elim1Store]: treesize reduction 3, result has 78.6 percent of original size
[2023-12-02 14:03:35,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23
[2023-12-02 14:03:36,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10
[2023-12-02 14:03:37,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:03:38,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:03:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 15 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2023-12-02 14:03:39,308 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:03:40,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813406856] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:03:40,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 14:03:40,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 28
[2023-12-02 14:03:40,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905477663]
[2023-12-02 14:03:40,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 14:03:40,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2023-12-02 14:03:40,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:03:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2023-12-02 14:03:40,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1092, Unknown=3, NotChecked=0, Total=1260
[2023-12-02 14:03:40,219 INFO L87 Difference]: Start difference. First operand 332 states and 413 transitions. Second operand has 29 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 10 states have call successors, (36), 9 states have call predecessors, (36), 10 states have return successors, (36), 7 states have call predecessors, (36), 10 states have call successors, (36)
[2023-12-02 14:03:41,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:03:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:03:50,122 INFO L93 Difference]: Finished difference Result 568 states and 703 transitions.
[2023-12-02 14:03:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2023-12-02 14:03:50,123 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 10 states have call successors, (36), 9 states have call predecessors, (36), 10 states have return successors, (36), 7 states have call predecessors, (36), 10 states have call successors, (36) Word has length 108
[2023-12-02 14:03:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:03:50,124 INFO L225 Difference]: With dead ends: 568
[2023-12-02 14:03:50,124 INFO L226 Difference]: Without dead ends: 356
[2023-12-02 14:03:50,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=430, Invalid=2219, Unknown=3, NotChecked=0, Total=2652
[2023-12-02 14:03:50,126 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 259 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time
[2023-12-02 14:03:50,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 711 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time]
[2023-12-02 14:03:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states.
[2023-12-02 14:03:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 309.
[2023-12-02 14:03:50,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 275 states have (on average 1.210909090909091) internal successors, (333), 275 states have internal predecessors, (333), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:03:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 381 transitions.
[2023-12-02 14:03:50,158 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 381 transitions. Word has length 108
[2023-12-02 14:03:50,159 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:03:50,159 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 381 transitions.
[2023-12-02 14:03:50,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 10 states have call successors, (36), 9 states have call predecessors, (36), 10 states have return successors, (36), 7 states have call predecessors, (36), 10 states have call successors, (36)
[2023-12-02 14:03:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 381 transitions.
[2023-12-02 14:03:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2023-12-02 14:03:50,160 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:03:50,160 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:03:50,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (45)] Ended with exit code 0
[2023-12-02 14:03:50,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0
[2023-12-02 14:03:50,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0
[2023-12-02 14:03:50,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:03:50,761 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:03:50,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:03:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1589293424, now seen corresponding path program 1 times
[2023-12-02 14:03:50,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:03:50,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593780458]
[2023-12-02 14:03:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:03:50,762 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
[2023-12-02 14:03:50,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:03:50,762 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:03:50,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (48)] Waiting until timeout for monitored process
[2023-12-02 14:03:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:03:51,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-02 14:03:51,060 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:03:51,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:03:51,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10
[2023-12-02 14:03:52,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:03:52,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34
[2023-12-02 14:03:52,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27
[2023-12-02 14:03:52,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:03:52,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 36
[2023-12-02 14:03:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked.
[2023-12-02 14:03:52,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:03:52,703 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:03:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593780458]
[2023-12-02 14:03:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593780458] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:03:52,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:03:52,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2023-12-02 14:03:52,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739738631]
[2023-12-02 14:03:52,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:03:52,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-12-02 14:03:52,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:03:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-12-02 14:03:52,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2023-12-02 14:03:52,705 INFO L87 Difference]: Start difference. First operand 309 states and 381 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)
[2023-12-02 14:03:57,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:03:57,809 INFO L93 Difference]: Finished difference Result 661 states and 825 transitions.
[2023-12-02 14:03:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2023-12-02 14:03:57,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108
[2023-12-02 14:03:57,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:03:57,813 INFO L225 Difference]: With dead ends: 661
[2023-12-02 14:03:57,813 INFO L226 Difference]: Without dead ends: 485
[2023-12-02 14:03:57,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462
[2023-12-02 14:03:57,814 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 244 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time
[2023-12-02 14:03:57,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 484 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 543 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time]
[2023-12-02 14:03:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states.
[2023-12-02 14:03:57,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 375.
[2023-12-02 14:03:57,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 341 states have (on average 1.2111436950146628) internal successors, (413), 341 states have internal predecessors, (413), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:03:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 461 transitions.
[2023-12-02 14:03:57,845 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 461 transitions. Word has length 108
[2023-12-02 14:03:57,845 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:03:57,845 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 461 transitions.
[2023-12-02 14:03:57,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)
[2023-12-02 14:03:57,845 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 461 transitions.
[2023-12-02 14:03:57,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2023-12-02 14:03:57,846 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:03:57,846 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:03:57,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (48)] Ended with exit code 0
[2023-12-02 14:03:58,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:03:58,047 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:03:58,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:03:58,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1651333038, now seen corresponding path program 1 times
[2023-12-02 14:03:58,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:03:58,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576301171]
[2023-12-02 14:03:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:03:58,048 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
[2023-12-02 14:03:58,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:03:58,049 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:03:58,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (49)] Waiting until timeout for monitored process
[2023-12-02 14:03:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:03:58,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-02 14:03:58,332 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:03:59,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:03:59,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:04:00,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:04:00,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22
[2023-12-02 14:04:00,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22
[2023-12-02 14:04:01,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:04:01,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19
[2023-12-02 14:04:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2023-12-02 14:04:01,448 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:04:01,932 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_980 (Array (_ BitVec 32) (_ BitVec 32))) (~last_1_unsigned_char_Array_0_2_~0 (_ BitVec 8))) (bvugt (let ((.cse0 (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_980) |c_~#signed_short_int_Array_0~0.base|))) (bvadd ((_ zero_extend 24) ~last_1_unsigned_char_Array_0_2_~0) (bvneg ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 |c_~#signed_short_int_Array_0~0.offset|)))) ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))))) c_~last_1_unsigned_long_int_Array_0_0_~0)) is different from false
[2023-12-02 14:04:01,972 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_979 (Array (_ BitVec 32) (_ BitVec 32))) (~last_1_unsigned_char_Array_0_2_~0 (_ BitVec 8))) (bvugt (let ((.cse0 (select (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_979) |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_980) |c_~#signed_short_int_Array_0~0.base|))) (bvadd ((_ zero_extend 24) ~last_1_unsigned_char_Array_0_2_~0) ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))) (bvneg ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 |c_~#signed_short_int_Array_0~0.offset|)))))) c_~last_1_unsigned_long_int_Array_0_0_~0)) is different from false
[2023-12-02 14:04:02,408 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:04:02,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576301171]
[2023-12-02 14:04:02,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576301171] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:04:02,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [930346121]
[2023-12-02 14:04:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:04:02,408 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:04:02,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:04:02,409 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:04:02,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process
[2023-12-02 14:04:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:04:03,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 24 conjunts are in the unsatisfiable core
[2023-12-02 14:04:03,210 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:04:03,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12
[2023-12-02 14:04:04,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2023-12-02 14:04:06,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:04:06,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:04:07,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:04:07,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:04:08,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2023-12-02 14:04:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2023-12-02 14:04:08,183 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:04:11,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [930346121] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:04:11,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667741584]
[2023-12-02 14:04:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:04:11,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:04:11,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:04:11,929 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:04:11,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2023-12-02 14:04:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:04:12,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-12-02 14:04:12,388 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:04:13,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10
[2023-12-02 14:04:15,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:04:15,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:04:16,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:04:16,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:04:17,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:04:17,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 23
[2023-12-02 14:04:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 15 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2023-12-02 14:04:17,229 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:04:18,746 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1027 (Array (_ BitVec 32) (_ BitVec 32))) (~last_1_unsigned_char_Array_0_2_~0 (_ BitVec 8))) (let ((.cse1 (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1027) |c_~#signed_short_int_Array_0~0.base|))) (let ((.cse0 ((_ sign_extend 16) ((_ extract 15 0) (select .cse1 |c_~#signed_short_int_Array_0~0.offset|))))) (or (bvugt (bvadd ((_ zero_extend 24) ~last_1_unsigned_char_Array_0_2_~0) (bvneg .cse0) ((_ sign_extend 16) ((_ extract 15 0) (select .cse1 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32)))))) c_~last_1_unsigned_long_int_Array_0_0_~0) (not (bvugt c_~last_1_unsigned_long_int_Array_0_0_~0 .cse0)))))) is different from false
[2023-12-02 14:04:18,814 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1027 (Array (_ BitVec 32) (_ BitVec 32))) (~last_1_unsigned_char_Array_0_2_~0 (_ BitVec 8)) (v_ArrVal_1026 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_1026) |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1027) |c_~#signed_short_int_Array_0~0.base|))) (let ((.cse1 ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 |c_~#signed_short_int_Array_0~0.offset|))))) (or (bvugt (bvadd ((_ zero_extend 24) ~last_1_unsigned_char_Array_0_2_~0) ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))) (bvneg .cse1)) c_~last_1_unsigned_long_int_Array_0_0_~0) (not (bvugt c_~last_1_unsigned_long_int_Array_0_0_~0 .cse1)))))) is different from false
[2023-12-02 14:04:18,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667741584] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:04:18,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 14:04:18,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 30
[2023-12-02 14:04:18,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629256470]
[2023-12-02 14:04:18,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 14:04:18,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2023-12-02 14:04:18,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:04:18,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2023-12-02 14:04:18,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1509, Unknown=23, NotChecked=332, Total=2070
[2023-12-02 14:04:18,942 INFO L87 Difference]: Start difference. First operand 375 states and 461 transitions. Second operand has 31 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 8 states have call successors, (30), 6 states have call predecessors, (30), 8 states have return successors, (30), 5 states have call predecessors, (30), 8 states have call successors, (30)
[2023-12-02 14:04:20,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:04:29,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:04:29,578 INFO L93 Difference]: Finished difference Result 679 states and 835 transitions.
[2023-12-02 14:04:29,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2023-12-02 14:04:29,579 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 8 states have call successors, (30), 6 states have call predecessors, (30), 8 states have return successors, (30), 5 states have call predecessors, (30), 8 states have call successors, (30) Word has length 108
[2023-12-02 14:04:29,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:04:29,581 INFO L225 Difference]: With dead ends: 679
[2023-12-02 14:04:29,581 INFO L226 Difference]: Without dead ends: 454
[2023-12-02 14:04:29,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=572, Invalid=2961, Unknown=23, NotChecked=476, Total=4032
[2023-12-02 14:04:29,583 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 435 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2023-12-02 14:04:29,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 924 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2023-12-02 14:04:29,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states.
[2023-12-02 14:04:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 364.
[2023-12-02 14:04:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 330 states have (on average 1.1939393939393939) internal successors, (394), 330 states have internal predecessors, (394), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:04:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 442 transitions.
[2023-12-02 14:04:29,606 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 442 transitions. Word has length 108
[2023-12-02 14:04:29,606 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:04:29,606 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 442 transitions.
[2023-12-02 14:04:29,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 8 states have call successors, (30), 6 states have call predecessors, (30), 8 states have return successors, (30), 5 states have call predecessors, (30), 8 states have call successors, (30)
[2023-12-02 14:04:29,607 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 442 transitions.
[2023-12-02 14:04:29,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2023-12-02 14:04:29,607 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:04:29,607 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:04:29,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (49)] Ended with exit code 0
[2023-12-02 14:04:29,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2023-12-02 14:04:30,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 0
[2023-12-02 14:04:30,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt
[2023-12-02 14:04:30,208 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:04:30,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:04:30,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1611154685, now seen corresponding path program 1 times
[2023-12-02 14:04:30,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:04:30,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611582929]
[2023-12-02 14:04:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:04:30,209 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
[2023-12-02 14:04:30,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:04:30,210 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:04:30,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (52)] Waiting until timeout for monitored process
[2023-12-02 14:04:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:04:30,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-02 14:04:30,480 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:04:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:04:30,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:04:30,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:04:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611582929]
[2023-12-02 14:04:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611582929] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:04:30,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:04:30,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 14:04:30,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984651048]
[2023-12-02 14:04:30,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:04:30,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 14:04:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:04:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 14:04:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-02 14:04:30,789 INFO L87 Difference]: Start difference. First operand 364 states and 442 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:04:32,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:04:32,577 INFO L93 Difference]: Finished difference Result 725 states and 882 transitions.
[2023-12-02 14:04:32,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-12-02 14:04:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110
[2023-12-02 14:04:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:04:32,589 INFO L225 Difference]: With dead ends: 725
[2023-12-02 14:04:32,589 INFO L226 Difference]: Without dead ends: 509
[2023-12-02 14:04:32,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-12-02 14:04:32,590 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 25 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2023-12-02 14:04:32,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 369 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2023-12-02 14:04:32,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states.
[2023-12-02 14:04:32,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 493.
[2023-12-02 14:04:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 459 states have (on average 1.1895424836601307) internal successors, (546), 459 states have internal predecessors, (546), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:04:32,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 594 transitions.
[2023-12-02 14:04:32,616 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 594 transitions. Word has length 110
[2023-12-02 14:04:32,616 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:04:32,616 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 594 transitions.
[2023-12-02 14:04:32,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:04:32,616 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 594 transitions.
[2023-12-02 14:04:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2023-12-02 14:04:32,617 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:04:32,617 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:04:32,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (52)] Forceful destruction successful, exit code 0
[2023-12-02 14:04:32,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:04:32,817 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:04:32,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:04:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash 312073349, now seen corresponding path program 1 times
[2023-12-02 14:04:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:04:32,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189731514]
[2023-12-02 14:04:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:04:32,818 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
[2023-12-02 14:04:32,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:04:32,819 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:04:32,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (53)] Waiting until timeout for monitored process
[2023-12-02 14:04:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:04:33,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-02 14:04:33,064 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:04:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:04:33,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:04:33,255 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:04:33,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189731514]
[2023-12-02 14:04:33,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189731514] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:04:33,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:04:33,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 14:04:33,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615926706]
[2023-12-02 14:04:33,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:04:33,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 14:04:33,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:04:33,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 14:04:33,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-02 14:04:33,257 INFO L87 Difference]: Start difference. First operand 493 states and 594 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:04:34,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:04:34,767 INFO L93 Difference]: Finished difference Result 830 states and 1000 transitions.
[2023-12-02 14:04:34,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-12-02 14:04:34,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110
[2023-12-02 14:04:34,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:04:34,778 INFO L225 Difference]: With dead ends: 830
[2023-12-02 14:04:34,778 INFO L226 Difference]: Without dead ends: 507
[2023-12-02 14:04:34,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-12-02 14:04:34,779 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 25 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2023-12-02 14:04:34,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 370 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2023-12-02 14:04:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states.
[2023-12-02 14:04:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 491.
[2023-12-02 14:04:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 457 states have (on average 1.175054704595186) internal successors, (537), 457 states have internal predecessors, (537), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:04:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 585 transitions.
[2023-12-02 14:04:34,804 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 585 transitions. Word has length 110
[2023-12-02 14:04:34,804 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:04:34,804 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 585 transitions.
[2023-12-02 14:04:34,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:04:34,805 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 585 transitions.
[2023-12-02 14:04:34,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2023-12-02 14:04:34,805 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:04:34,805 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:04:34,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (53)] Ended with exit code 0
[2023-12-02 14:04:35,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:04:35,006 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:04:35,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:04:35,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1179554549, now seen corresponding path program 1 times
[2023-12-02 14:04:35,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:04:35,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615233693]
[2023-12-02 14:04:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:04:35,007 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
[2023-12-02 14:04:35,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:04:35,008 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:04:35,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (54)] Waiting until timeout for monitored process
[2023-12-02 14:04:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:04:35,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-12-02 14:04:35,303 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:04:35,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:04:35,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2023-12-02 14:04:36,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21
[2023-12-02 14:04:36,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:04:36,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:04:36,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 17
[2023-12-02 14:04:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:04:36,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:04:36,723 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:04:36,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615233693]
[2023-12-02 14:04:36,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615233693] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:04:36,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:04:36,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-12-02 14:04:36,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512131787]
[2023-12-02 14:04:36,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:04:36,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-02 14:04:36,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:04:36,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-02 14:04:36,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2023-12-02 14:04:36,725 INFO L87 Difference]: Start difference. First operand 491 states and 585 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:04:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:04:41,776 INFO L93 Difference]: Finished difference Result 1006 states and 1215 transitions.
[2023-12-02 14:04:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2023-12-02 14:04:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110
[2023-12-02 14:04:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:04:41,780 INFO L225 Difference]: With dead ends: 1006
[2023-12-02 14:04:41,780 INFO L226 Difference]: Without dead ends: 714
[2023-12-02 14:04:41,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812
[2023-12-02 14:04:41,782 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 346 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2023-12-02 14:04:41,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 598 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2023-12-02 14:04:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states.
[2023-12-02 14:04:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 498.
[2023-12-02 14:04:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 464 states have (on average 1.1637931034482758) internal successors, (540), 464 states have internal predecessors, (540), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:04:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 588 transitions.
[2023-12-02 14:04:41,820 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 588 transitions. Word has length 110
[2023-12-02 14:04:41,820 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:04:41,820 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 588 transitions.
[2023-12-02 14:04:41,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:04:41,820 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 588 transitions.
[2023-12-02 14:04:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2023-12-02 14:04:41,821 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:04:41,821 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:04:41,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (54)] Forceful destruction successful, exit code 0
[2023-12-02 14:04:42,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:04:42,022 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:04:42,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:04:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1859612919, now seen corresponding path program 1 times
[2023-12-02 14:04:42,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:04:42,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826512207]
[2023-12-02 14:04:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:04:42,023 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
[2023-12-02 14:04:42,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:04:42,024 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:04:42,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (55)] Waiting until timeout for monitored process
[2023-12-02 14:04:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:04:42,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-12-02 14:04:42,383 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:04:42,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:04:43,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2023-12-02 14:04:43,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:04:43,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24
[2023-12-02 14:04:43,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:04:43,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:04:43,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16
[2023-12-02 14:04:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:04:43,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:04:43,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:04:43,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826512207]
[2023-12-02 14:04:43,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826512207] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:04:43,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:04:43,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-02 14:04:43,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027555734]
[2023-12-02 14:04:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:04:43,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-02 14:04:43,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:04:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-02 14:04:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-12-02 14:04:43,651 INFO L87 Difference]: Start difference. First operand 498 states and 588 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:04:46,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:04:46,868 INFO L93 Difference]: Finished difference Result 924 states and 1107 transitions.
[2023-12-02 14:04:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-12-02 14:04:46,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110
[2023-12-02 14:04:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:04:46,872 INFO L225 Difference]: With dead ends: 924
[2023-12-02 14:04:46,872 INFO L226 Difference]: Without dead ends: 680
[2023-12-02 14:04:46,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-12-02 14:04:46,873 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 154 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2023-12-02 14:04:46,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 320 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2023-12-02 14:04:46,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states.
[2023-12-02 14:04:46,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 561.
[2023-12-02 14:04:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 527 states have (on average 1.1612903225806452) internal successors, (612), 527 states have internal predecessors, (612), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:04:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 660 transitions.
[2023-12-02 14:04:46,895 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 660 transitions. Word has length 110
[2023-12-02 14:04:46,895 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:04:46,895 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 660 transitions.
[2023-12-02 14:04:46,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:04:46,895 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 660 transitions.
[2023-12-02 14:04:46,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2023-12-02 14:04:46,896 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:04:46,896 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:04:46,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (55)] Ended with exit code 0
[2023-12-02 14:04:47,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:04:47,096 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:04:47,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:04:47,097 INFO L85 PathProgramCache]: Analyzing trace with hash 670081459, now seen corresponding path program 1 times
[2023-12-02 14:04:47,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:04:47,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208292525]
[2023-12-02 14:04:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:04:47,097 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
[2023-12-02 14:04:47,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:04:47,098 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:04:47,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (56)] Waiting until timeout for monitored process
[2023-12-02 14:04:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:04:47,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-02 14:04:47,469 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:04:47,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:04:48,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10
[2023-12-02 14:04:48,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:04:48,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 34
[2023-12-02 14:04:48,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 37
[2023-12-02 14:04:49,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:04:49,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 26
[2023-12-02 14:04:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked.
[2023-12-02 14:04:49,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:04:49,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:04:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208292525]
[2023-12-02 14:04:49,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208292525] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:04:49,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:04:49,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-12-02 14:04:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890522920]
[2023-12-02 14:04:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:04:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-02 14:04:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:04:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-02 14:04:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2023-12-02 14:04:49,568 INFO L87 Difference]: Start difference. First operand 561 states and 660 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12)
[2023-12-02 14:04:57,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:04:57,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:04:57,240 INFO L93 Difference]: Finished difference Result 1009 states and 1207 transitions.
[2023-12-02 14:04:57,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-12-02 14:04:57,242 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110
[2023-12-02 14:04:57,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:04:57,245 INFO L225 Difference]: With dead ends: 1009
[2023-12-02 14:04:57,245 INFO L226 Difference]: Without dead ends: 702
[2023-12-02 14:04:57,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2023-12-02 14:04:57,247 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-12-02 14:04:57,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 422 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2023-12-02 14:04:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states.
[2023-12-02 14:04:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 624.
[2023-12-02 14:04:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 590 states have (on average 1.159322033898305) internal successors, (684), 590 states have internal predecessors, (684), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:04:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 732 transitions.
[2023-12-02 14:04:57,275 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 732 transitions. Word has length 110
[2023-12-02 14:04:57,275 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:04:57,275 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 732 transitions.
[2023-12-02 14:04:57,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12)
[2023-12-02 14:04:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 732 transitions.
[2023-12-02 14:04:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2023-12-02 14:04:57,277 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:04:57,277 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:04:57,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (56)] Forceful destruction successful, exit code 0
[2023-12-02 14:04:57,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:04:57,477 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:04:57,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:04:57,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1350139829, now seen corresponding path program 1 times
[2023-12-02 14:04:57,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:04:57,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629979968]
[2023-12-02 14:04:57,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:04:57,478 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
[2023-12-02 14:04:57,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:04:57,479 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:04:57,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (57)] Waiting until timeout for monitored process
[2023-12-02 14:04:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:04:57,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-12-02 14:04:57,864 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:04:58,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:04:58,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23
[2023-12-02 14:04:58,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21
[2023-12-02 14:04:59,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:04:59,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17
[2023-12-02 14:04:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-02 14:04:59,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:04:59,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:04:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629979968]
[2023-12-02 14:04:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629979968] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:04:59,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:04:59,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-12-02 14:04:59,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369763484]
[2023-12-02 14:04:59,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:04:59,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-02 14:04:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:04:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-02 14:04:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2023-12-02 14:04:59,287 INFO L87 Difference]: Start difference. First operand 624 states and 732 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:05:04,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:05:04,289 INFO L93 Difference]: Finished difference Result 1095 states and 1309 transitions.
[2023-12-02 14:05:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2023-12-02 14:05:04,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110
[2023-12-02 14:05:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:05:04,292 INFO L225 Difference]: With dead ends: 1095
[2023-12-02 14:05:04,292 INFO L226 Difference]: Without dead ends: 737
[2023-12-02 14:05:04,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600
[2023-12-02 14:05:04,293 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 224 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2023-12-02 14:05:04,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 658 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2023-12-02 14:05:04,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states.
[2023-12-02 14:05:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 614.
[2023-12-02 14:05:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 580 states have (on average 1.1586206896551725) internal successors, (672), 580 states have internal predecessors, (672), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-02 14:05:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 720 transitions.
[2023-12-02 14:05:04,330 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 720 transitions. Word has length 110
[2023-12-02 14:05:04,333 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:05:04,333 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 720 transitions.
[2023-12-02 14:05:04,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:05:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 720 transitions.
[2023-12-02 14:05:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210
[2023-12-02 14:05:04,335 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:05:04,336 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:05:04,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (57)] Ended with exit code 0
[2023-12-02 14:05:04,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:05:04,536 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:05:04,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:05:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash 362859096, now seen corresponding path program 1 times
[2023-12-02 14:05:04,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:05:04,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270925074]
[2023-12-02 14:05:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:05:04,538 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
[2023-12-02 14:05:04,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:05:04,539 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:05:04,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (58)] Waiting until timeout for monitored process
[2023-12-02 14:05:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:05:05,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-12-02 14:05:05,340 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:05:06,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:05:06,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:05:07,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24
[2023-12-02 14:05:07,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14
[2023-12-02 14:05:09,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14
[2023-12-02 14:05:10,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2023-12-02 14:05:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 98 proven. 713 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked.
[2023-12-02 14:05:10,940 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:05:11,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30
[2023-12-02 14:05:11,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6
[2023-12-02 14:05:11,522 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:05:11,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270925074]
[2023-12-02 14:05:11,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270925074] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:05:11,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1363607163]
[2023-12-02 14:05:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:05:11,523 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:05:11,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:05:11,524 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:05:11,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process
[2023-12-02 14:05:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:05:12,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 35 conjunts are in the unsatisfiable core
[2023-12-02 14:05:12,796 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:05:13,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2023-12-02 14:05:14,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:05:14,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:05:15,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22
[2023-12-02 14:05:16,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14
[2023-12-02 14:05:18,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2023-12-02 14:05:19,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:05:19,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:05:20,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14
[2023-12-02 14:05:21,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2023-12-02 14:05:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 417 proven. 450 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked.
[2023-12-02 14:05:21,981 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:05:22,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1363607163] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:05:22,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802754033]
[2023-12-02 14:05:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:05:22,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:05:22,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:05:22,291 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:05:22,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process
[2023-12-02 14:05:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:05:23,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 32 conjunts are in the unsatisfiable core
[2023-12-02 14:05:23,617 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:05:24,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2023-12-02 14:05:24,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:05:24,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:05:25,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24
[2023-12-02 14:05:26,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14
[2023-12-02 14:05:29,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28
[2023-12-02 14:05:30,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28
[2023-12-02 14:05:30,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28
[2023-12-02 14:05:32,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36
[2023-12-02 14:05:32,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:05:32,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 25
[2023-12-02 14:05:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 527 proven. 468 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2023-12-02 14:05:33,226 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:05:33,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802754033] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:05:33,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 14:05:33,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 22] total 43
[2023-12-02 14:05:33,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706659270]
[2023-12-02 14:05:33,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 14:05:33,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2023-12-02 14:05:33,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:05:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2023-12-02 14:05:33,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2130, Unknown=2, NotChecked=0, Total=2450
[2023-12-02 14:05:33,458 INFO L87 Difference]: Start difference. First operand 614 states and 720 transitions. Second operand has 44 states, 40 states have (on average 6.95) internal successors, (278), 41 states have internal predecessors, (278), 15 states have call successors, (62), 12 states have call predecessors, (62), 15 states have return successors, (62), 13 states have call predecessors, (62), 15 states have call successors, (62)
[2023-12-02 14:05:50,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:05:56,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:05:58,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:06:08,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:06:10,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:06:11,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:06:11,610 INFO L93 Difference]: Finished difference Result 1447 states and 1709 transitions.
[2023-12-02 14:06:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2023-12-02 14:06:11,611 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 40 states have (on average 6.95) internal successors, (278), 41 states have internal predecessors, (278), 15 states have call successors, (62), 12 states have call predecessors, (62), 15 states have return successors, (62), 13 states have call predecessors, (62), 15 states have call successors, (62) Word has length 209
[2023-12-02 14:06:11,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:06:11,615 INFO L225 Difference]: With dead ends: 1447
[2023-12-02 14:06:11,615 INFO L226 Difference]: Without dead ends: 1089
[2023-12-02 14:06:11,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 654 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2660 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=1378, Invalid=7362, Unknown=2, NotChecked=0, Total=8742
[2023-12-02 14:06:11,619 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1062 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time
[2023-12-02 14:06:11,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1445 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3123 Invalid, 1 Unknown, 0 Unchecked, 28.5s Time]
[2023-12-02 14:06:11,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states.
[2023-12-02 14:06:11,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 727.
[2023-12-02 14:06:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 675 states have (on average 1.1555555555555554) internal successors, (780), 675 states have internal predecessors, (780), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36)
[2023-12-02 14:06:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 852 transitions.
[2023-12-02 14:06:11,657 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 852 transitions. Word has length 209
[2023-12-02 14:06:11,657 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:06:11,657 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 852 transitions.
[2023-12-02 14:06:11,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 40 states have (on average 6.95) internal successors, (278), 41 states have internal predecessors, (278), 15 states have call successors, (62), 12 states have call predecessors, (62), 15 states have return successors, (62), 13 states have call predecessors, (62), 15 states have call successors, (62)
[2023-12-02 14:06:11,658 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 852 transitions.
[2023-12-02 14:06:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212
[2023-12-02 14:06:11,660 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:06:11,660 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:06:11,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (58)] Forceful destruction successful, exit code 0
[2023-12-02 14:06:11,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (59)] Forceful destruction successful, exit code 0
[2023-12-02 14:06:12,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0
[2023-12-02 14:06:12,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:06:12,261 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:06:12,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:06:12,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1116501196, now seen corresponding path program 1 times
[2023-12-02 14:06:12,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:06:12,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216835729]
[2023-12-02 14:06:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:06:12,262 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
[2023-12-02 14:06:12,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:06:12,263 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:06:12,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (61)] Waiting until timeout for monitored process
[2023-12-02 14:06:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:06:12,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-02 14:06:12,634 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:06:18,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:06:18,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 66
[2023-12-02 14:06:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1137 trivial. 0 not checked.
[2023-12-02 14:06:20,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 14:06:20,683 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:06:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216835729]
[2023-12-02 14:06:20,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216835729] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 14:06:20,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 14:06:20,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 14:06:20,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100095177]
[2023-12-02 14:06:20,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 14:06:20,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 14:06:20,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:06:20,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 14:06:20,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-02 14:06:20,685 INFO L87 Difference]: Start difference. First operand 727 states and 852 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:06:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:06:38,424 INFO L93 Difference]: Finished difference Result 1213 states and 1432 transitions.
[2023-12-02 14:06:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-12-02 14:06:38,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 211
[2023-12-02 14:06:38,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:06:38,438 INFO L225 Difference]: With dead ends: 1213
[2023-12-02 14:06:38,438 INFO L226 Difference]: Without dead ends: 728
[2023-12-02 14:06:38,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-12-02 14:06:38,439 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 30 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time
[2023-12-02 14:06:38,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 351 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time]
[2023-12-02 14:06:38,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states.
[2023-12-02 14:06:38,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 667.
[2023-12-02 14:06:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 615 states have (on average 1.159349593495935) internal successors, (713), 615 states have internal predecessors, (713), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36)
[2023-12-02 14:06:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 785 transitions.
[2023-12-02 14:06:38,469 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 785 transitions. Word has length 211
[2023-12-02 14:06:38,470 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:06:38,470 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 785 transitions.
[2023-12-02 14:06:38,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-02 14:06:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 785 transitions.
[2023-12-02 14:06:38,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2023-12-02 14:06:38,471 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:06:38,472 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:06:38,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (61)] Forceful destruction successful, exit code 0
[2023-12-02 14:06:38,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:06:38,672 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:06:38,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:06:38,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1565950562, now seen corresponding path program 1 times
[2023-12-02 14:06:38,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:06:38,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648478631]
[2023-12-02 14:06:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:06:38,673 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
[2023-12-02 14:06:38,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:06:38,674 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:06:38,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (62)] Waiting until timeout for monitored process
[2023-12-02 14:06:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:06:39,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 28 conjunts are in the unsatisfiable core
[2023-12-02 14:06:39,349 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:06:40,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:06:40,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:06:41,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24
[2023-12-02 14:06:41,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14
[2023-12-02 14:06:43,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:06:43,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:06:44,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25
[2023-12-02 14:06:44,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25
[2023-12-02 14:06:45,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:06:45,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22
[2023-12-02 14:06:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 467 proven. 320 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked.
[2023-12-02 14:06:45,612 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:06:47,898 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1341 (Array (_ BitVec 32) (_ BitVec 32))) (~last_1_unsigned_char_Array_0_2_~0 (_ BitVec 8))) (let ((.cse0 ((_ zero_extend 24) ~last_1_unsigned_char_Array_0_2_~0)) (.cse2 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32)))) (or (not (bvugt (let ((.cse1 (select (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_1341) |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1342) |c_~#signed_short_int_Array_0~0.base|))) (bvadd .cse0 ((_ sign_extend 16) ((_ extract 15 0) (select .cse1 .cse2))) (bvneg ((_ sign_extend 16) ((_ extract 15 0) (select .cse1 |c_~#signed_short_int_Array_0~0.offset|)))))) c_~last_1_unsigned_long_int_Array_0_0_~0)) (bvugt (let ((.cse3 (select |c_#memory_int| |c_~#signed_short_int_Array_0~0.base|))) (bvadd .cse0 (bvneg ((_ sign_extend 16) ((_ extract 15 0) (select .cse3 |c_~#signed_short_int_Array_0~0.offset|)))) ((_ sign_extend 16) ((_ extract 15 0) (select .cse3 .cse2))))) |c_ULTIMATE.start_step_~stepLocal_2~0#1|)))) is different from false
[2023-12-02 14:06:48,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:06:48,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648478631]
[2023-12-02 14:06:48,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648478631] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:06:48,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1540662993]
[2023-12-02 14:06:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:06:48,235 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:06:48,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:06:48,236 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:06:48,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process
[2023-12-02 14:06:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:06:49,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 47 conjunts are in the unsatisfiable core
[2023-12-02 14:06:49,543 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:06:50,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2023-12-02 14:06:51,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:06:51,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2023-12-02 14:06:52,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22
[2023-12-02 14:06:53,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14
[2023-12-02 14:06:55,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8
[2023-12-02 14:06:57,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:06:57,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:06:58,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 43
[2023-12-02 14:06:59,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 43
[2023-12-02 14:07:01,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 36
[2023-12-02 14:07:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 732 proven. 219 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked.
[2023-12-02 14:07:01,371 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:07:08,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1540662993] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:07:08,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10290124]
[2023-12-02 14:07:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:07:08,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:07:08,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:07:08,944 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:07:08,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process
[2023-12-02 14:07:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:07:21,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 53 conjunts are in the unsatisfiable core
[2023-12-02 14:07:21,458 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:07:22,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10
[2023-12-02 14:07:23,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:07:24,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:07:24,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28
[2023-12-02 14:07:27,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 18
[2023-12-02 14:07:31,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28
[2023-12-02 14:07:33,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 37
[2023-12-02 14:07:34,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 37
[2023-12-02 14:07:36,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 56
[2023-12-02 14:07:36,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 56
[2023-12-02 14:07:38,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:07:38,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 41
[2023-12-02 14:07:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 734 proven. 255 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked.
[2023-12-02 14:07:39,277 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:07:46,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10290124] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:07:46,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 14:07:46,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 31] total 62
[2023-12-02 14:07:46,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112984298]
[2023-12-02 14:07:46,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 14:07:46,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states
[2023-12-02 14:07:46,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:07:46,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants.
[2023-12-02 14:07:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=619, Invalid=5195, Unknown=42, NotChecked=150, Total=6006
[2023-12-02 14:07:46,767 INFO L87 Difference]: Start difference. First operand 667 states and 785 transitions. Second operand has 63 states, 56 states have (on average 5.071428571428571) internal successors, (284), 57 states have internal predecessors, (284), 16 states have call successors, (62), 13 states have call predecessors, (62), 16 states have return successors, (62), 11 states have call predecessors, (62), 16 states have call successors, (62)
[2023-12-02 14:07:48,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:08:00,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:08:17,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:08:19,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:08:35,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:08:37,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:08:38,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:08:44,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:09:00,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:09:02,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:09:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:09:03,881 INFO L93 Difference]: Finished difference Result 1552 states and 1816 transitions.
[2023-12-02 14:09:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2023-12-02 14:09:03,883 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 56 states have (on average 5.071428571428571) internal successors, (284), 57 states have internal predecessors, (284), 16 states have call successors, (62), 13 states have call predecessors, (62), 16 states have return successors, (62), 11 states have call predecessors, (62), 16 states have call successors, (62) Word has length 212
[2023-12-02 14:09:03,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:09:03,886 INFO L225 Difference]: With dead ends: 1552
[2023-12-02 14:09:03,886 INFO L226 Difference]: Without dead ends: 1068
[2023-12-02 14:09:03,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 645 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6028 ImplicationChecksByTransitivity, 57.4s TimeCoverageRelationStatistics Valid=2191, Invalid=15324, Unknown=45, NotChecked=262, Total=17822
[2023-12-02 14:09:03,891 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1040 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 4954 mSolverCounterSat, 70 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 5026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4954 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.9s IncrementalHoareTripleChecker+Time
[2023-12-02 14:09:03,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 2215 Invalid, 5026 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 4954 Invalid, 2 Unknown, 0 Unchecked, 50.9s Time]
[2023-12-02 14:09:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states.
[2023-12-02 14:09:03,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 732.
[2023-12-02 14:09:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 679 states have (on average 1.1531664212076582) internal successors, (783), 679 states have internal predecessors, (783), 36 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36)
[2023-12-02 14:09:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 855 transitions.
[2023-12-02 14:09:03,944 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 855 transitions. Word has length 212
[2023-12-02 14:09:03,944 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:09:03,944 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 855 transitions.
[2023-12-02 14:09:03,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 56 states have (on average 5.071428571428571) internal successors, (284), 57 states have internal predecessors, (284), 16 states have call successors, (62), 13 states have call predecessors, (62), 16 states have return successors, (62), 11 states have call predecessors, (62), 16 states have call successors, (62)
[2023-12-02 14:09:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 855 transitions.
[2023-12-02 14:09:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2023-12-02 14:09:03,947 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:09:03,947 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:09:03,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0
[2023-12-02 14:09:04,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0
[2023-12-02 14:09:04,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (62)] Forceful destruction successful, exit code 0
[2023-12-02 14:09:04,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:09:04,548 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:09:04,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:09:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2010520368, now seen corresponding path program 1 times
[2023-12-02 14:09:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:09:04,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732655403]
[2023-12-02 14:09:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:09:04,550 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
[2023-12-02 14:09:04,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:09:04,550 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:09:04,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (65)] Waiting until timeout for monitored process
[2023-12-02 14:09:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:09:05,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 32 conjunts are in the unsatisfiable core
[2023-12-02 14:09:05,647 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:09:06,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:09:07,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:09:07,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24
[2023-12-02 14:09:08,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14
[2023-12-02 14:09:10,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:09:11,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2023-12-02 14:09:12,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40
[2023-12-02 14:09:13,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40
[2023-12-02 14:09:14,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:09:14,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 31
[2023-12-02 14:09:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 726 proven. 219 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked.
[2023-12-02 14:09:14,385 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:09:16,269 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1472 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1473 (Array (_ BitVec 32) (_ BitVec 32)))) (bvugt (let ((.cse0 (select (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_1472) |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1473) |c_~#signed_short_int_Array_0~0.base|))) (bvadd ((_ zero_extend 24) c_~last_1_unsigned_char_Array_0_2_~0) (bvneg ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 |c_~#signed_short_int_Array_0~0.offset|)))) ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))))) c_~last_1_unsigned_long_int_Array_0_0_~0)) is different from false
[2023-12-02 14:09:16,346 WARN L854 $PredicateComparison]: unable to prove that (forall ((~last_1_unsigned_char_Array_0_2_~0 (_ BitVec 8))) (let ((.cse0 ((_ zero_extend 24) ~last_1_unsigned_char_Array_0_2_~0))) (or (not (bvugt (bvadd .cse0 ((_ sign_extend 16) |c_ULTIMATE.start_step_#t~mem6#1|) (bvneg ((_ sign_extend 16) |c_ULTIMATE.start_step_#t~mem5#1|))) |c_ULTIMATE.start_step_~stepLocal_2~0#1|)) (forall ((v_ArrVal_1472 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1473 (Array (_ BitVec 32) (_ BitVec 32)))) (bvugt (let ((.cse1 (select (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_1472) |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1473) |c_~#signed_short_int_Array_0~0.base|))) (bvadd .cse0 (bvneg ((_ sign_extend 16) ((_ extract 15 0) (select .cse1 |c_~#signed_short_int_Array_0~0.offset|)))) ((_ sign_extend 16) ((_ extract 15 0) (select .cse1 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))))) c_~last_1_unsigned_long_int_Array_0_0_~0))))) is different from false
[2023-12-02 14:09:16,988 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:09:16,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732655403]
[2023-12-02 14:09:16,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732655403] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:09:16,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [640799814]
[2023-12-02 14:09:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:09:16,989 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:09:16,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:09:16,990 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:09:16,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process
[2023-12-02 14:09:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:09:19,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 47 conjunts are in the unsatisfiable core
[2023-12-02 14:09:19,091 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:09:20,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8
[2023-12-02 14:09:21,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:09:22,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:09:22,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26
[2023-12-02 14:09:24,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14
[2023-12-02 14:09:26,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8
[2023-12-02 14:09:28,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:09:29,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19
[2023-12-02 14:09:31,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 42
[2023-12-02 14:09:32,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 42
[2023-12-02 14:09:35,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 35
[2023-12-02 14:09:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 732 proven. 225 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked.
[2023-12-02 14:09:35,415 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:09:37,018 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1517 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1516 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_1516) |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1517) |c_~#signed_short_int_Array_0~0.base|))) (let ((.cse1 ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 |c_~#signed_short_int_Array_0~0.offset|))))) (or (bvugt (bvadd ((_ zero_extend 24) c_~last_1_unsigned_char_Array_0_2_~0) ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))) (bvneg .cse1)) c_~last_1_unsigned_long_int_Array_0_0_~0) (not (bvugt c_~last_1_unsigned_long_int_Array_0_0_~0 .cse1)))))) is different from false
[2023-12-02 14:09:39,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [640799814] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:09:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127141251]
[2023-12-02 14:09:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:09:39,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:09:39,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:09:39,658 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:09:39,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process
[2023-12-02 14:09:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:09:46,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 51 conjunts are in the unsatisfiable core
[2023-12-02 14:09:46,328 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:09:47,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10
[2023-12-02 14:09:49,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:09:49,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23
[2023-12-02 14:09:50,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28
[2023-12-02 14:09:52,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 18
[2023-12-02 14:09:56,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28
[2023-12-02 14:09:59,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 37
[2023-12-02 14:10:00,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 37
[2023-12-02 14:10:02,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55
[2023-12-02 14:10:03,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55
[2023-12-02 14:10:05,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-02 14:10:05,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40
[2023-12-02 14:10:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 734 proven. 255 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked.
[2023-12-02 14:10:06,256 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:10:06,462 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1561 (Array (_ BitVec 32) (_ BitVec 32)))) (bvugt (let ((.cse0 (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1561) |c_~#signed_short_int_Array_0~0.base|))) (bvadd (bvneg ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 |c_~#signed_short_int_Array_0~0.offset|)))) ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))) ((_ zero_extend 24) c_~last_1_unsigned_char_Array_0_2_~0))) c_~last_1_unsigned_long_int_Array_0_0_~0)) is different from false
[2023-12-02 14:10:06,509 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1560 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1561 (Array (_ BitVec 32) (_ BitVec 32)))) (bvugt (let ((.cse0 (select (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_1560) |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1561) |c_~#signed_short_int_Array_0~0.base|))) (bvadd (bvneg ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 |c_~#signed_short_int_Array_0~0.offset|)))) ((_ zero_extend 24) c_~last_1_unsigned_char_Array_0_2_~0) ((_ sign_extend 16) ((_ extract 15 0) (select .cse0 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))))) c_~last_1_unsigned_long_int_Array_0_0_~0)) is different from false
[2023-12-02 14:10:06,588 WARN L854 $PredicateComparison]: unable to prove that (forall ((~last_1_unsigned_char_Array_0_2_~0 (_ BitVec 8))) (let ((.cse0 ((_ zero_extend 24) ~last_1_unsigned_char_Array_0_2_~0))) (or (not (bvugt (bvadd .cse0 ((_ sign_extend 16) |c_ULTIMATE.start_step_#t~mem6#1|) (bvneg ((_ sign_extend 16) |c_ULTIMATE.start_step_#t~mem5#1|))) |c_ULTIMATE.start_step_~stepLocal_2~0#1|)) (forall ((v_ArrVal_1560 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1561 (Array (_ BitVec 32) (_ BitVec 32)))) (bvugt (let ((.cse1 (select (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_1560) |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1561) |c_~#signed_short_int_Array_0~0.base|))) (bvadd .cse0 (bvneg ((_ sign_extend 16) ((_ extract 15 0) (select .cse1 |c_~#signed_short_int_Array_0~0.offset|)))) ((_ sign_extend 16) ((_ extract 15 0) (select .cse1 (bvadd |c_~#signed_short_int_Array_0~0.offset| (_ bv2 32))))))) c_~last_1_unsigned_long_int_Array_0_0_~0))))) is different from false
[2023-12-02 14:10:10,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127141251] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:10:10,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 14:10:10,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 31] total 66
[2023-12-02 14:10:10,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374309927]
[2023-12-02 14:10:10,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 14:10:10,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states
[2023-12-02 14:10:10,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:10:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants.
[2023-12-02 14:10:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=760, Invalid=5536, Unknown=48, NotChecked=966, Total=7310
[2023-12-02 14:10:10,203 INFO L87 Difference]: Start difference. First operand 732 states and 855 transitions. Second operand has 67 states, 59 states have (on average 4.915254237288136) internal successors, (290), 60 states have internal predecessors, (290), 18 states have call successors, (62), 15 states have call predecessors, (62), 17 states have return successors, (62), 12 states have call predecessors, (62), 18 states have call successors, (62)
[2023-12-02 14:10:12,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:10:13,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:10:28,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:10:45,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:10:47,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:10:50,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:10:52,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:10:54,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:10:56,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:11:07,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:11:13,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:11:13,456 INFO L93 Difference]: Finished difference Result 1568 states and 1824 transitions.
[2023-12-02 14:11:13,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2023-12-02 14:11:13,457 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 59 states have (on average 4.915254237288136) internal successors, (290), 60 states have internal predecessors, (290), 18 states have call successors, (62), 15 states have call predecessors, (62), 17 states have return successors, (62), 12 states have call predecessors, (62), 18 states have call successors, (62) Word has length 212
[2023-12-02 14:11:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:11:13,462 INFO L225 Difference]: With dead ends: 1568
[2023-12-02 14:11:13,462 INFO L226 Difference]: Without dead ends: 1019
[2023-12-02 14:11:13,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 638 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 5588 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=2066, Invalid=13410, Unknown=48, NotChecked=1506, Total=17030
[2023-12-02 14:11:13,465 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 839 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 4619 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 4674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 4619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.2s IncrementalHoareTripleChecker+Time
[2023-12-02 14:11:13,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1881 Invalid, 4674 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 4619 Invalid, 1 Unknown, 0 Unchecked, 48.2s Time]
[2023-12-02 14:11:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states.
[2023-12-02 14:11:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 732.
[2023-12-02 14:11:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 679 states have (on average 1.1531664212076582) internal successors, (783), 679 states have internal predecessors, (783), 36 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36)
[2023-12-02 14:11:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 855 transitions.
[2023-12-02 14:11:13,510 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 855 transitions. Word has length 212
[2023-12-02 14:11:13,510 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:11:13,510 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 855 transitions.
[2023-12-02 14:11:13,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 59 states have (on average 4.915254237288136) internal successors, (290), 60 states have internal predecessors, (290), 18 states have call successors, (62), 15 states have call predecessors, (62), 17 states have return successors, (62), 12 states have call predecessors, (62), 18 states have call successors, (62)
[2023-12-02 14:11:13,511 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 855 transitions.
[2023-12-02 14:11:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215
[2023-12-02 14:11:13,512 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:11:13,513 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:11:13,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0
[2023-12-02 14:11:13,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (66)] Ended with exit code 0
[2023-12-02 14:11:13,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (65)] Ended with exit code 0
[2023-12-02 14:11:14,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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
[2023-12-02 14:11:14,113 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:11:14,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:11:14,114 INFO L85 PathProgramCache]: Analyzing trace with hash 196520157, now seen corresponding path program 1 times
[2023-12-02 14:11:14,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:11:14,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994403712]
[2023-12-02 14:11:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:11:14,115 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
[2023-12-02 14:11:14,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:11:14,115 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:11:14,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (68)] Waiting until timeout for monitored process
[2023-12-02 14:11:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:11:14,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-02 14:11:14,679 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:11:14,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:15,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:15,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:15,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:16,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:16,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:16,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 612 proven. 212 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked.
[2023-12-02 14:11:16,796 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:11:17,037 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:11:17,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994403712]
[2023-12-02 14:11:17,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994403712] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:11:17,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [73522178]
[2023-12-02 14:11:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:11:17,038 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:11:17,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:11:17,039 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:11:17,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process
[2023-12-02 14:11:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:11:17,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-02 14:11:17,979 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:11:18,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:18,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:18,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:18,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:19,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:19,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:19,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 612 proven. 212 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked.
[2023-12-02 14:11:19,914 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:11:19,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [73522178] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:11:19,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351722335]
[2023-12-02 14:11:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:11:19,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:11:19,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:11:19,993 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:11:19,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process
[2023-12-02 14:11:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:11:21,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-02 14:11:21,258 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:11:22,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8
[2023-12-02 14:11:24,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14
[2023-12-02 14:11:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 615 proven. 14 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked.
[2023-12-02 14:11:24,809 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:11:25,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30
[2023-12-02 14:11:25,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6
[2023-12-02 14:11:25,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351722335] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:11:25,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-02 14:11:25,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 15
[2023-12-02 14:11:25,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408330933]
[2023-12-02 14:11:25,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-02 14:11:25,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-12-02 14:11:25,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:11:25,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-12-02 14:11:25,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=415, Unknown=2, NotChecked=0, Total=506
[2023-12-02 14:11:25,437 INFO L87 Difference]: Start difference. First operand 732 states and 855 transitions. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 15 states have internal predecessors, (188), 7 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (48), 7 states have call predecessors, (48), 7 states have call successors, (48)
[2023-12-02 14:11:35,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 14:11:35,467 INFO L93 Difference]: Finished difference Result 2437 states and 2859 transitions.
[2023-12-02 14:11:35,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2023-12-02 14:11:35,468 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 15 states have internal predecessors, (188), 7 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (48), 7 states have call predecessors, (48), 7 states have call successors, (48) Word has length 214
[2023-12-02 14:11:35,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 14:11:35,478 INFO L225 Difference]: With dead ends: 2437
[2023-12-02 14:11:35,478 INFO L226 Difference]: Without dead ends: 1765
[2023-12-02 14:11:35,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=231, Invalid=957, Unknown=2, NotChecked=0, Total=1190
[2023-12-02 14:11:35,479 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 426 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time
[2023-12-02 14:11:35,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1016 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time]
[2023-12-02 14:11:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states.
[2023-12-02 14:11:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1304.
[2023-12-02 14:11:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1217 states have (on average 1.1561216105176664) internal successors, (1407), 1217 states have internal predecessors, (1407), 60 states have call successors, (60), 26 states have call predecessors, (60), 26 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)
[2023-12-02 14:11:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1527 transitions.
[2023-12-02 14:11:35,548 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1527 transitions. Word has length 214
[2023-12-02 14:11:35,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-02 14:11:35,549 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 1527 transitions.
[2023-12-02 14:11:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 15 states have internal predecessors, (188), 7 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (48), 7 states have call predecessors, (48), 7 states have call successors, (48)
[2023-12-02 14:11:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1527 transitions.
[2023-12-02 14:11:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215
[2023-12-02 14:11:35,551 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-02 14:11:35,551 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 14:11:35,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (68)] Ended with exit code 0
[2023-12-02 14:11:35,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (69)] Ended with exit code 0
[2023-12-02 14:11:35,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0
[2023-12-02 14:11:36,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:11:36,152 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-02 14:11:36,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 14:11:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash 473582109, now seen corresponding path program 1 times
[2023-12-02 14:11:36,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-12-02 14:11:36,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757428749]
[2023-12-02 14:11:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:11:36,153 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
[2023-12-02 14:11:36,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/mathsat
[2023-12-02 14:11:36,154 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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)
[2023-12-02 14:11:36,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/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 (71)] Waiting until timeout for monitored process
[2023-12-02 14:11:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:11:36,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-02 14:11:36,765 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:11:36,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:37,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:37,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:37,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:38,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:38,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:38,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:40,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14
[2023-12-02 14:11:41,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2023-12-02 14:11:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 5 proven. 788 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked.
[2023-12-02 14:11:41,221 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:11:41,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30
[2023-12-02 14:11:41,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6
[2023-12-02 14:11:41,739 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-12-02 14:11:41,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757428749]
[2023-12-02 14:11:41,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757428749] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:11:41,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [811037668]
[2023-12-02 14:11:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:11:41,740 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-02 14:11:41,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4
[2023-12-02 14:11:41,741 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-02 14:11:41,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process
[2023-12-02 14:11:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:11:42,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-02 14:11:42,734 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:11:42,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:43,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:43,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:43,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:44,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:44,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:44,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-02 14:11:46,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:11:47,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-12-02 14:11:47,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14
[2023-12-02 14:11:47,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2023-12-02 14:11:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 5 proven. 812 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2023-12-02 14:11:50,085 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:11:50,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [811037668] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 14:11:50,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593338986]
[2023-12-02 14:11:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 14:11:50,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 14:11:50,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 14:11:50,488 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 14:11:50,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8ce8f2-eb0e-429b-ac69-c02cd33c0f02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process
[2023-12-02 14:11:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 14:11:51,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-02 14:11:51,806 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 14:11:53,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14
[2023-12-02 14:11:54,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2023-12-02 14:11:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked.
[2023-12-02 14:11:58,205 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-02 14:11:58,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26
[2023-12-02 14:11:58,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11
[2023-12-02 14:11:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked.
[2023-12-02 14:11:59,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593338986] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-02 14:11:59,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences.
[2023-12-02 14:11:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6, 7] total 21
[2023-12-02 14:11:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190647908]
[2023-12-02 14:11:59,052 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton
[2023-12-02 14:11:59,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2023-12-02 14:11:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-12-02 14:11:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2023-12-02 14:11:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=427, Unknown=2, NotChecked=0, Total=552
[2023-12-02 14:11:59,054 INFO L87 Difference]: Start difference. First operand 1304 states and 1527 transitions. Second operand has 21 states, 21 states have (on average 14.285714285714286) internal successors, (300), 21 states have internal predecessors, (300), 7 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 7 states have call predecessors, (60), 7 states have call successors, (60)
[2023-12-02 14:12:01,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:12:03,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-12-02 14:12:06,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]