./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound20.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a95a21aef2f50b6142b75e9167422e223cf73e944019da3877f24b8f537b25b5
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:38:17,943 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:38:17,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:38:18,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:38:18,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:38:18,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:38:18,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:38:18,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:38:18,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:38:18,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:38:18,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:38:18,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:38:18,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:38:18,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:38:18,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:38:18,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:38:18,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:38:18,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:38:18,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:38:18,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:38:18,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:38:18,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:38:18,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:38:18,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:38:18,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:38:18,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:38:18,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:38:18,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:38:18,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:38:18,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:38:18,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:38:18,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:38:18,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:38:18,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:38:18,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:38:18,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:38:18,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:38:18,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:38:18,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:38:18,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:38:18,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:38:18,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 18:38:18,152 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:38:18,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:38:18,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:38:18,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:38:18,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:38:18,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:38:18,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:38:18,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:38:18,156 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:38:18,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:38:18,158 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:38:18,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:38:18,159 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:38:18,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:38:18,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:38:18,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:38:18,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:38:18,160 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:38:18,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:38:18,160 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:38:18,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:38:18,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:38:18,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:38:18,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:38:18,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:38:18,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:38:18,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:38:18,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:38:18,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:38:18,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:38:18,165 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:38:18,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:38:18,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:38:18,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:38:18,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
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_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a95a21aef2f50b6142b75e9167422e223cf73e944019da3877f24b8f537b25b5
[2021-11-13 18:38:18,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:38:18,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:38:18,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:38:18,498 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:38:18,499 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:38:18,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound20.c
[2021-11-13 18:38:18,567 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/data/7c56d18ce/e23e9cecccce4d2b90cc9cc703d33f64/FLAG6ba01241d
[2021-11-13 18:38:19,060 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:38:19,060 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound20.c
[2021-11-13 18:38:19,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/data/7c56d18ce/e23e9cecccce4d2b90cc9cc703d33f64/FLAG6ba01241d
[2021-11-13 18:38:19,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/data/7c56d18ce/e23e9cecccce4d2b90cc9cc703d33f64
[2021-11-13 18:38:19,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:38:19,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:38:19,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:38:19,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:38:19,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:38:19,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bbb8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19, skipping insertion in model container
[2021-11-13 18:38:19,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:38:19,443 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:38:19,606 WARN L228 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_0d762a7d-283d-4435-bcd9-b12eb22793cc/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound20.c[537,550]
[2021-11-13 18:38:19,619 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:38:19,628 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:38:19,641 WARN L228 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_0d762a7d-283d-4435-bcd9-b12eb22793cc/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound20.c[537,550]
[2021-11-13 18:38:19,646 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:38:19,659 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:38:19,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19 WrapperNode
[2021-11-13 18:38:19,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:38:19,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:38:19,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:38:19,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:38:19,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:38:19,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:38:19,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:38:19,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:38:19,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:38:19,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:38:19,718 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:38:19,719 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:38:19,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (1/1) ...
[2021-11-13 18:38:19,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:38:19,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:38:19,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:38:19,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:38:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-11-13 18:38:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-11-13 18:38:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 18:38:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:38:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:38:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:38:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-13 18:38:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-13 18:38:20,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:38:20,030 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 18:38:20,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:38:20 BoogieIcfgContainer
[2021-11-13 18:38:20,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:38:20,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:38:20,035 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:38:20,039 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:38:20,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:38:19" (1/3) ...
[2021-11-13 18:38:20,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b15071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:38:20, skipping insertion in model container
[2021-11-13 18:38:20,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:38:19" (2/3) ...
[2021-11-13 18:38:20,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b15071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:38:20, skipping insertion in model container
[2021-11-13 18:38:20,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:38:20" (3/3) ...
[2021-11-13 18:38:20,043 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound20.c
[2021-11-13 18:38:20,049 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:38:20,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:38:20,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:38:20,129 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 18:38:20,130 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 18:38:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 18:38:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-11-13 18:38:20,156 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:38:20,157 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:38:20,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:38:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:38:20,165 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times
[2021-11-13 18:38:20,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:38:20,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298878787]
[2021-11-13 18:38:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:20,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:38:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:38:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 18:38:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:38:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 18:38:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:38:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2021-11-13 18:38:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:38:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:38:20,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:38:20,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298878787]
[2021-11-13 18:38:20,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298878787] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:38:20,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:38:20,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 18:38:20,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790471394]
[2021-11-13 18:38:20,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:38:20,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 18:38:20,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:38:20,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 18:38:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:38:20,431 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2021-11-13 18:38:20,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:38:20,467 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions.
[2021-11-13 18:38:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 18:38:20,469 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24
[2021-11-13 18:38:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:38:20,478 INFO L225 Difference]: With dead ends: 51
[2021-11-13 18:38:20,479 INFO L226 Difference]: Without dead ends: 23
[2021-11-13 18:38:20,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:38:20,487 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:38:20,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 18:38:20,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2021-11-13 18:38:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2021-11-13 18:38:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2021-11-13 18:38:20,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2021-11-13 18:38:20,535 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24
[2021-11-13 18:38:20,536 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:38:20,536 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2021-11-13 18:38:20,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2021-11-13 18:38:20,537 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2021-11-13 18:38:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-11-13 18:38:20,539 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:38:20,539 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:38:20,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:38:20,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:38:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:38:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times
[2021-11-13 18:38:20,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:38:20,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400376440]
[2021-11-13 18:38:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:20,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:38:20,570 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:38:20,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105182407]
[2021-11-13 18:38:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:20,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:38:20,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:38:20,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:38:20,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 18:38:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:38:20,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-11-13 18:38:20,671 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:38:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:38:20,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:38:20,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:38:20,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400376440]
[2021-11-13 18:38:20,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:38:20,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105182407]
[2021-11-13 18:38:20,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105182407] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:38:20,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:38:20,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 18:38:20,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233155339]
[2021-11-13 18:38:20,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:38:20,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:38:20,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:38:20,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:38:20,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:38:20,889 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 18:38:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:38:21,002 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions.
[2021-11-13 18:38:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:38:21,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24
[2021-11-13 18:38:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:38:21,005 INFO L225 Difference]: With dead ends: 35
[2021-11-13 18:38:21,005 INFO L226 Difference]: Without dead ends: 33
[2021-11-13 18:38:21,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:38:21,007 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.76ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:38:21,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 36 Unknown, 0 Unchecked, 7.45ms Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 65.76ms Time]
[2021-11-13 18:38:21,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-11-13 18:38:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29.
[2021-11-13 18:38:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 18:38:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions.
[2021-11-13 18:38:21,037 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24
[2021-11-13 18:38:21,038 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:38:21,038 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions.
[2021-11-13 18:38:21,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 18:38:21,039 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions.
[2021-11-13 18:38:21,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-11-13 18:38:21,040 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:38:21,041 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:38:21,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 18:38:21,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:38:21,242 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:38:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:38:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash -895979555, now seen corresponding path program 1 times
[2021-11-13 18:38:21,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:38:21,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964447977]
[2021-11-13 18:38:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:21,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:38:21,262 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:38:21,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794804295]
[2021-11-13 18:38:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:21,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:38:21,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:38:21,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:38:21,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 18:38:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:38:21,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-13 18:38:21,332 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:38:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 18:38:21,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:38:21,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:38:21,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964447977]
[2021-11-13 18:38:21,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:38:21,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794804295]
[2021-11-13 18:38:21,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794804295] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:38:21,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:38:21,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 18:38:21,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431527969]
[2021-11-13 18:38:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:38:21,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 18:38:21,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:38:21,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 18:38:21,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:38:21,443 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-13 18:38:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:38:21,511 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions.
[2021-11-13 18:38:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:38:21,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30
[2021-11-13 18:38:21,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:38:21,513 INFO L225 Difference]: With dead ends: 39
[2021-11-13 18:38:21,513 INFO L226 Difference]: Without dead ends: 32
[2021-11-13 18:38:21,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2021-11-13 18:38:21,516 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.39ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.79ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:38:21,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 79 Invalid, 50 Unknown, 0 Unchecked, 2.39ms Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 43.79ms Time]
[2021-11-13 18:38:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2021-11-13 18:38:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30.
[2021-11-13 18:38:21,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 18:38:21,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2021-11-13 18:38:21,524 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30
[2021-11-13 18:38:21,524 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:38:21,524 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2021-11-13 18:38:21,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-13 18:38:21,525 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2021-11-13 18:38:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2021-11-13 18:38:21,526 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:38:21,526 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:38:21,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:38:21,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:38:21,746 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:38:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:38:21,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times
[2021-11-13 18:38:21,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:38:21,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538313195]
[2021-11-13 18:38:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:21,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:38:21,765 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:38:21,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538475234]
[2021-11-13 18:38:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:21,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:38:21,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:38:21,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:38:21,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 18:38:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:38:21,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-11-13 18:38:21,857 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:38:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:38:25,714 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:38:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:38:30,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:38:30,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538313195]
[2021-11-13 18:38:30,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:38:30,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538475234]
[2021-11-13 18:38:30,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538475234] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:38:30,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:38:30,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14
[2021-11-13 18:38:30,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766670716]
[2021-11-13 18:38:30,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:38:30,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-11-13 18:38:30,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:38:30,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-11-13 18:38:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182
[2021-11-13 18:38:30,360 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:38:32,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:38:34,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:38:36,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:38:43,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:38:44,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:38:44,097 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions.
[2021-11-13 18:38:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-11-13 18:38:44,098 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33
[2021-11-13 18:38:44,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:38:44,100 INFO L225 Difference]: With dead ends: 48
[2021-11-13 18:38:44,101 INFO L226 Difference]: Without dead ends: 46
[2021-11-13 18:38:44,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306
[2021-11-13 18:38:44,103 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 12 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9376.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.73ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9415.95ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:38:44,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 157 Invalid, 181 Unknown, 0 Unchecked, 5.73ms Time], IncrementalHoareTripleChecker [12 Valid, 165 Invalid, 4 Unknown, 0 Unchecked, 9415.95ms Time]
[2021-11-13 18:38:44,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2021-11-13 18:38:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37.
[2021-11-13 18:38:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6)
[2021-11-13 18:38:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions.
[2021-11-13 18:38:44,111 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 33
[2021-11-13 18:38:44,112 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:38:44,112 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions.
[2021-11-13 18:38:44,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 18:38:44,113 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions.
[2021-11-13 18:38:44,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2021-11-13 18:38:44,114 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:38:44,114 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:38:44,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 18:38:44,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:38:44,329 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:38:44,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:38:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times
[2021-11-13 18:38:44,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:38:44,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681586015]
[2021-11-13 18:38:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:44,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:38:44,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:38:44,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3677111]
[2021-11-13 18:38:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:44,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:38:44,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:38:44,348 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:38:44,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 18:38:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:38:44,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-11-13 18:38:44,405 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:38:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 18:38:48,306 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:38:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 18:38:49,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:38:49,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681586015]
[2021-11-13 18:38:49,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:38:49,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3677111]
[2021-11-13 18:38:49,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3677111] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:38:49,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:38:49,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 19
[2021-11-13 18:38:49,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044665213]
[2021-11-13 18:38:49,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:38:49,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2021-11-13 18:38:49,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:38:49,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-11-13 18:38:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342
[2021-11-13 18:38:49,935 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 16 states have internal predecessors, (31), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6)
[2021-11-13 18:38:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:38:51,109 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions.
[2021-11-13 18:38:51,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-11-13 18:38:51,109 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 16 states have internal predecessors, (31), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33
[2021-11-13 18:38:51,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:38:51,111 INFO L225 Difference]: With dead ends: 62
[2021-11-13 18:38:51,111 INFO L226 Difference]: Without dead ends: 55
[2021-11-13 18:38:51,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650
[2021-11-13 18:38:51,113 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 44 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 635.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.59ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 670.47ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:38:51,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 116 Invalid, 225 Unknown, 0 Unchecked, 2.59ms Time], IncrementalHoareTripleChecker [33 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 670.47ms Time]
[2021-11-13 18:38:51,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2021-11-13 18:38:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2021-11-13 18:38:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9)
[2021-11-13 18:38:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions.
[2021-11-13 18:38:51,125 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 33
[2021-11-13 18:38:51,126 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:38:51,126 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions.
[2021-11-13 18:38:51,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 16 states have internal predecessors, (31), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6)
[2021-11-13 18:38:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions.
[2021-11-13 18:38:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2021-11-13 18:38:51,128 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:38:51,128 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:38:51,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 18:38:51,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:38:51,342 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:38:51,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:38:51,342 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times
[2021-11-13 18:38:51,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:38:51,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948801561]
[2021-11-13 18:38:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:51,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:38:51,355 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:38:51,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071424287]
[2021-11-13 18:38:51,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:51,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:38:51,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:38:51,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:38:51,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-13 18:38:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:38:51,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-13 18:38:51,400 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:38:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-11-13 18:38:51,527 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:38:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-11-13 18:38:51,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:38:51,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948801561]
[2021-11-13 18:38:51,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:38:51,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071424287]
[2021-11-13 18:38:51,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071424287] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:38:51,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:38:51,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2021-11-13 18:38:51,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054696270]
[2021-11-13 18:38:51,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:38:51,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 18:38:51,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:38:51,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 18:38:51,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:38:51,689 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6)
[2021-11-13 18:38:53,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:38:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:38:53,787 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions.
[2021-11-13 18:38:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:38:53,788 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39
[2021-11-13 18:38:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:38:53,789 INFO L225 Difference]: With dead ends: 61
[2021-11-13 18:38:53,789 INFO L226 Difference]: Without dead ends: 54
[2021-11-13 18:38:53,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-11-13 18:38:53,791 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2054.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2064.45ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:38:53,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 123 Invalid, 74 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 2064.45ms Time]
[2021-11-13 18:38:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2021-11-13 18:38:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2021-11-13 18:38:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 41 states have internal predecessors, (44), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9)
[2021-11-13 18:38:53,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions.
[2021-11-13 18:38:53,802 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 39
[2021-11-13 18:38:53,802 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:38:53,802 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions.
[2021-11-13 18:38:53,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6)
[2021-11-13 18:38:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions.
[2021-11-13 18:38:53,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2021-11-13 18:38:53,804 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:38:53,805 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:38:53,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2021-11-13 18:38:54,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2021-11-13 18:38:54,032 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:38:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:38:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash -662815268, now seen corresponding path program 1 times
[2021-11-13 18:38:54,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:38:54,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299790502]
[2021-11-13 18:38:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:54,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:38:54,045 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:38:54,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385091508]
[2021-11-13 18:38:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:38:54,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:38:54,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:38:54,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:38:54,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-13 18:38:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:38:54,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 31 conjunts are in the unsatisfiable core
[2021-11-13 18:38:54,117 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:39:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2021-11-13 18:39:01,919 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:39:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2021-11-13 18:39:06,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:39:06,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299790502]
[2021-11-13 18:39:06,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:39:06,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385091508]
[2021-11-13 18:39:06,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385091508] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:39:06,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:39:06,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18
[2021-11-13 18:39:06,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165022354]
[2021-11-13 18:39:06,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:39:06,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-13 18:39:06,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:39:06,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-13 18:39:06,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306
[2021-11-13 18:39:06,944 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7)
[2021-11-13 18:39:09,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:39:11,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:39:18,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:39:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:39:22,604 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions.
[2021-11-13 18:39:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-11-13 18:39:22,604 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 42
[2021-11-13 18:39:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:39:22,606 INFO L225 Difference]: With dead ends: 78
[2021-11-13 18:39:22,606 INFO L226 Difference]: Without dead ends: 76
[2021-11-13 18:39:22,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=113, Invalid=437, Unknown=2, NotChecked=0, Total=552
[2021-11-13 18:39:22,608 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 41 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6357.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.53ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 6385.61ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:39:22,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 149 Invalid, 217 Unknown, 0 Unchecked, 2.53ms Time], IncrementalHoareTripleChecker [26 Valid, 166 Invalid, 2 Unknown, 23 Unchecked, 6385.61ms Time]
[2021-11-13 18:39:22,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2021-11-13 18:39:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59.
[2021-11-13 18:39:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 45 states have internal predecessors, (49), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10)
[2021-11-13 18:39:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions.
[2021-11-13 18:39:22,620 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 42
[2021-11-13 18:39:22,621 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:39:22,621 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions.
[2021-11-13 18:39:22,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7)
[2021-11-13 18:39:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions.
[2021-11-13 18:39:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2021-11-13 18:39:22,624 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:39:22,624 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:39:22,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-13 18:39:22,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:39:22,834 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:39:22,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:39:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1448142086, now seen corresponding path program 2 times
[2021-11-13 18:39:22,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:39:22,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668340296]
[2021-11-13 18:39:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:39:22,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:39:22,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:39:22,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56469763]
[2021-11-13 18:39:22,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:39:22,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:39:22,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:39:22,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:39:22,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-11-13 18:39:22,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 18:39:22,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:39:22,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-11-13 18:39:22,907 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:39:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2021-11-13 18:39:25,785 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:39:29,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:39:29,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668340296]
[2021-11-13 18:39:29,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:39:29,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56469763]
[2021-11-13 18:39:29,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56469763] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:39:29,411 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:39:29,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18
[2021-11-13 18:39:29,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575316445]
[2021-11-13 18:39:29,412 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:39:29,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-13 18:39:29,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:39:29,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-13 18:39:29,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552
[2021-11-13 18:39:29,413 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)
[2021-11-13 18:39:30,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:39:30,124 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions.
[2021-11-13 18:39:30,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-11-13 18:39:30,125 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 60
[2021-11-13 18:39:30,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:39:30,126 INFO L225 Difference]: With dead ends: 103
[2021-11-13 18:39:30,126 INFO L226 Difference]: Without dead ends: 101
[2021-11-13 18:39:30,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650
[2021-11-13 18:39:30,128 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 591.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.68ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 620.85ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:39:30,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 276 Invalid, 295 Unknown, 0 Unchecked, 3.68ms Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 33 Unchecked, 620.85ms Time]
[2021-11-13 18:39:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2021-11-13 18:39:30,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91.
[2021-11-13 18:39:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 72 states have internal predecessors, (76), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-13 18:39:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions.
[2021-11-13 18:39:30,154 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 60
[2021-11-13 18:39:30,155 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:39:30,155 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions.
[2021-11-13 18:39:30,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)
[2021-11-13 18:39:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions.
[2021-11-13 18:39:30,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2021-11-13 18:39:30,164 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:39:30,164 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:39:30,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-11-13 18:39:30,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:39:30,365 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:39:30,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:39:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash 743390522, now seen corresponding path program 2 times
[2021-11-13 18:39:30,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:39:30,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620326195]
[2021-11-13 18:39:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:39:30,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:39:30,389 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:39:30,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124080527]
[2021-11-13 18:39:30,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:39:30,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:39:30,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:39:30,395 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:39:30,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-11-13 18:39:30,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 18:39:30,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:39:30,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 38 conjunts are in the unsatisfiable core
[2021-11-13 18:39:30,458 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:39:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 48 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2021-11-13 18:39:33,074 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:39:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 48 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2021-11-13 18:39:47,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:39:47,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620326195]
[2021-11-13 18:39:47,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:39:47,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124080527]
[2021-11-13 18:39:47,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124080527] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:39:47,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:39:47,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 32
[2021-11-13 18:39:47,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497610557]
[2021-11-13 18:39:47,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:39:47,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2021-11-13 18:39:47,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:39:47,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-11-13 18:39:47,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992
[2021-11-13 18:39:47,135 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand has 32 states, 32 states have (on average 1.8125) internal successors, (58), 29 states have internal predecessors, (58), 13 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13)
[2021-11-13 18:40:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:40:00,429 INFO L93 Difference]: Finished difference Result 157 states and 190 transitions.
[2021-11-13 18:40:00,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2021-11-13 18:40:00,430 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 29 states have internal predecessors, (58), 13 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) Word has length 60
[2021-11-13 18:40:00,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:40:00,431 INFO L225 Difference]: With dead ends: 157
[2021-11-13 18:40:00,431 INFO L226 Difference]: Without dead ends: 130
[2021-11-13 18:40:00,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=369, Invalid=1701, Unknown=0, NotChecked=0, Total=2070
[2021-11-13 18:40:00,434 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 88 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4849.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.67ms SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4976.89ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:40:00,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 257 Invalid, 676 Unknown, 0 Unchecked, 6.67ms Time], IncrementalHoareTripleChecker [110 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 4976.89ms Time]
[2021-11-13 18:40:00,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2021-11-13 18:40:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130.
[2021-11-13 18:40:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 98 states have (on average 1.153061224489796) internal successors, (113), 103 states have internal predecessors, (113), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (23), 18 states have call predecessors, (23), 23 states have call successors, (23)
[2021-11-13 18:40:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 159 transitions.
[2021-11-13 18:40:00,460 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 159 transitions. Word has length 60
[2021-11-13 18:40:00,460 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:40:00,461 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 159 transitions.
[2021-11-13 18:40:00,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 29 states have internal predecessors, (58), 13 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13)
[2021-11-13 18:40:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 159 transitions.
[2021-11-13 18:40:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2021-11-13 18:40:00,463 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:40:00,464 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:40:00,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2021-11-13 18:40:00,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:40:00,686 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:40:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:40:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1111093907, now seen corresponding path program 3 times
[2021-11-13 18:40:00,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:40:00,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352107970]
[2021-11-13 18:40:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:40:00,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:40:00,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:40:00,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753299533]
[2021-11-13 18:40:00,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-13 18:40:00,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:40:00,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:40:00,699 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:40:00,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2021-11-13 18:40:00,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-11-13 18:40:00,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:40:00,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-11-13 18:40:00,792 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:40:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2021-11-13 18:40:05,942 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:40:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 54 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2021-11-13 18:40:10,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:40:10,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352107970]
[2021-11-13 18:40:10,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:40:10,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753299533]
[2021-11-13 18:40:10,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753299533] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:40:10,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:40:10,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18] total 35
[2021-11-13 18:40:10,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370275760]
[2021-11-13 18:40:10,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:40:10,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2021-11-13 18:40:10,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:40:10,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-11-13 18:40:10,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=960, Unknown=3, NotChecked=0, Total=1190
[2021-11-13 18:40:10,921 INFO L87 Difference]: Start difference. First operand 130 states and 159 transitions. Second operand has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 32 states have internal predecessors, (66), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15)
[2021-11-13 18:40:15,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:40:26,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:40:35,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:41:38,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:41:39,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:41:46,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:42:05,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:42:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:42:05,908 INFO L93 Difference]: Finished difference Result 177 states and 213 transitions.
[2021-11-13 18:42:05,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2021-11-13 18:42:05,909 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 32 states have internal predecessors, (66), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 69
[2021-11-13 18:42:05,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:42:05,910 INFO L225 Difference]: With dead ends: 177
[2021-11-13 18:42:05,910 INFO L226 Difference]: Without dead ends: 0
[2021-11-13 18:42:05,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 103 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 105.6s TimeCoverageRelationStatistics Valid=857, Invalid=3161, Unknown=14, NotChecked=0, Total=4032
[2021-11-13 18:42:05,914 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 68 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 61 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16750.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 16848.98ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:42:05,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 221 Invalid, 535 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [61 Valid, 440 Invalid, 4 Unknown, 30 Unchecked, 16848.98ms Time]
[2021-11-13 18:42:05,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-11-13 18:42:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-11-13 18:42:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:42:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-11-13 18:42:05,916 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69
[2021-11-13 18:42:05,917 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:42:05,917 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-11-13 18:42:05,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 32 states have internal predecessors, (66), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15)
[2021-11-13 18:42:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-11-13 18:42:05,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-11-13 18:42:05,920 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 18:42:05,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2021-11-13 18:42:06,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-11-13 18:42:06,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-11-13 18:42:25,617 WARN L227 SmtUtils]: Spent 19.17s on a formula simplification. DAG size of input: 269 DAG size of output: 33 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)
[2021-11-13 18:42:38,238 WARN L227 SmtUtils]: Spent 12.62s on a formula simplification. DAG size of input: 269 DAG size of output: 33 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)
[2021-11-13 18:42:38,437 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-11-13 18:42:38,437 INFO L861 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true
[2021-11-13 18:42:38,437 INFO L854 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 20))
[2021-11-13 18:42:38,437 INFO L861 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true
[2021-11-13 18:42:38,438 INFO L858 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed.
[2021-11-13 18:42:38,438 INFO L861 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true
[2021-11-13 18:42:38,438 INFO L858 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed.
[2021-11-13 18:42:38,438 INFO L854 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~b~0#1| 20)) (.cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and .cse0 (= (* 16 |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| 0) (<= 0 (+ (div (+ (- 1) (div |ULTIMATE.start_main_~y~0#1| 2)) 2) 1)) (not (= (mod |ULTIMATE.start_main_~y~0#1| 2) 0))) (and .cse0 (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2)))
[2021-11-13 18:42:38,439 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-11-13 18:42:38,439 INFO L854 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) .cse0) (= |ULTIMATE.start_main_~z~0#1| .cse0)))
[2021-11-13 18:42:38,439 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-11-13 18:42:38,440 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-11-13 18:42:38,440 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed.
[2021-11-13 18:42:38,440 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed.
[2021-11-13 18:42:38,440 INFO L858 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed.
[2021-11-13 18:42:38,440 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~b~0#1| 20)) (.cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and .cse0 (= (* 16 |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| 0) (<= 0 (+ (div (+ (- 1) (div |ULTIMATE.start_main_~y~0#1| 2)) 2) 1)) (not (= (mod |ULTIMATE.start_main_~y~0#1| 2) 0))) (and .cse0 (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2)))
[2021-11-13 18:42:38,441 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed.
[2021-11-13 18:42:38,441 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true
[2021-11-13 18:42:38,441 INFO L858 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed.
[2021-11-13 18:42:38,441 INFO L858 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed.
[2021-11-13 18:42:38,441 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed.
[2021-11-13 18:42:38,442 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true
[2021-11-13 18:42:38,442 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed.
[2021-11-13 18:42:38,442 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed.
[2021-11-13 18:42:38,443 INFO L858 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed.
[2021-11-13 18:42:38,443 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed.
[2021-11-13 18:42:38,443 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed.
[2021-11-13 18:42:38,447 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1]
[2021-11-13 18:42:38,449 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 18:42:38,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:42:38 BoogieIcfgContainer
[2021-11-13 18:42:38,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 18:42:38,478 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 18:42:38,478 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 18:42:38,479 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 18:42:38,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:38:20" (3/4) ...
[2021-11-13 18:42:38,483 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-11-13 18:42:38,493 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not
[2021-11-13 18:42:38,493 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2021-11-13 18:42:38,498 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges
[2021-11-13 18:42:38,499 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2021-11-13 18:42:38,499 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-11-13 18:42:38,499 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-11-13 18:42:38,538 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 18:42:38,539 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 18:42:38,539 INFO L158 Benchmark]: Toolchain (without parser) took 259126.54ms. Allocated memory was 109.1MB in the beginning and 172.0MB in the end (delta: 62.9MB). Free memory was 77.6MB in the beginning and 119.1MB in the end (delta: -41.5MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB.
[2021-11-13 18:42:38,540 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:42:38,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.12ms. Allocated memory is still 109.1MB. Free memory was 77.3MB in the beginning and 83.8MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 18:42:38,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.67ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 82.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:42:38,542 INFO L158 Benchmark]: Boogie Preprocessor took 20.73ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 81.5MB in the end (delta: 957.7kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:42:38,542 INFO L158 Benchmark]: RCFGBuilder took 314.42ms. Allocated memory is still 109.1MB. Free memory was 81.5MB in the beginning and 71.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-13 18:42:38,543 INFO L158 Benchmark]: TraceAbstraction took 258443.17ms. Allocated memory was 109.1MB in the beginning and 172.0MB in the end (delta: 62.9MB). Free memory was 71.2MB in the beginning and 122.3MB in the end (delta: -51.0MB). Peak memory consumption was 93.0MB. Max. memory is 16.1GB.
[2021-11-13 18:42:38,543 INFO L158 Benchmark]: Witness Printer took 60.43ms. Allocated memory is still 172.0MB. Free memory was 122.3MB in the beginning and 119.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:42:38,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 246.12ms. Allocated memory is still 109.1MB. Free memory was 77.3MB in the beginning and 83.8MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 34.67ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 82.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 20.73ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 81.5MB in the end (delta: 957.7kB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 314.42ms. Allocated memory is still 109.1MB. Free memory was 81.5MB in the beginning and 71.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 258443.17ms. Allocated memory was 109.1MB in the beginning and 172.0MB in the end (delta: 62.9MB). Free memory was 71.2MB in the beginning and 122.3MB in the end (delta: -51.0MB). Peak memory consumption was 93.0MB. Max. memory is 16.1GB.
* Witness Printer took 60.43ms. Allocated memory is still 172.0MB. Free memory was 122.3MB in the beginning and 119.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 15]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 258.3s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 162.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 32.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 41092.75ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 326 mSDsluCounter, 1487 SdHoareTripleChecker+Invalid, 40703.22ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 86 IncrementalHoareTripleChecker+Unchecked, 1271 mSDsCounter, 255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1937 IncrementalHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 255 mSolverCounterUnsat, 216 mSDtfsCounter, 1937 mSolverCounterSat, 37.54ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 758 GetRequests, 527 SyntacticMatches, 19 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 2173 ImplicationChecksByTransitivity, 147.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=9, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 42 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 46 PreInvPairs, 96 NumberOfFragments, 152 HoareAnnotationTreeSize, 46 FomulaSimplifications, 1120 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 6589 FormulaSimplificationTreeSizeReductionInter, 32.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 60.9s InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 674 ConstructedInterpolants, 5 QuantifiedInterpolants, 9630 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1060 ConjunctsInSsa, 204 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 437/696 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
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 34]: Loop Invariant
Derived loop invariant: ((((((b <= 20 && 16 * a == x) && 1 <= b) && y * x + z == a * b) && a == 0) && 0 <= (-1 + y / 2) / 2 + 1) && !(y % 2 == 0)) || (((b <= 20 && 0 <= y) && 1 <= b) && y * x + z == a * b)
- InvariantResult [Line: 20]: Loop Invariant
Derived loop invariant: 1
RESULT: Ultimate proved your program to be correct!
[2021-11-13 18:42:38,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d762a7d-283d-4435-bcd9-b12eb22793cc/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE