/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound100.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 03:26:36,273 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 03:26:36,274 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 03:26:36,317 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 03:26:36,317 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 03:26:36,328 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 03:26:36,330 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 03:26:36,332 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 03:26:36,333 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 03:26:36,334 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 03:26:36,335 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 03:26:36,335 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 03:26:36,336 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 03:26:36,336 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 03:26:36,337 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 03:26:36,338 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 03:26:36,339 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 03:26:36,339 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 03:26:36,340 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 03:26:36,340 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 03:26:36,342 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 03:26:36,342 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 03:26:36,343 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
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[2022-01-10 03:26:36,344 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 03:26:36,344 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 03:26:36,345 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 03:26:36,345 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 03:26:36,346 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 03:26:36,346 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 03:26:36,346 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 03:26:36,346 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 03:26:36,346 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 03:26:36,347 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 03:26:36,352 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2022-01-10 03:26:36,376 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 03:26:36,376 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 03:26:36,376 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 03:26:36,376 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 03:26:36,377 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 03:26:36,377 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 03:26:36,377 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 03:26:36,378 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 03:26:36,378 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 03:26:36,378 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 03:26:36,378 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 03:26:36,378 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 03:26:36,378 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 03:26:36,379 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 03:26:36,379 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 03:26:36,379 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 03:26:36,379 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 03:26:36,379 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 03:26:36,379 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 03:26:36,379 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 03:26:36,379 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 03:26:36,379 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 03:26:36,379 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 03:26:36,379 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:26:36,380 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 03:26:36,380 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 03:26:36,380 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 03:26:36,380 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 03:26:36,381 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 03:26:36,381 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 03:26:36,381 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 03:26:36,381 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 03:26:36,381 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 03:26:36,381 INFO  L138        SettingsManager]:  * Logic for external solver=AUFBV
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 03:26:36,577 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 03:26:36,603 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 03:26:36,605 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 03:26:36,605 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 03:26:36,607 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 03:26:36,608 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound100.c
[2022-01-10 03:26:36,653 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a0c11c9d/f79152f7c3b649688c24f8a34f367182/FLAGa174b651c
[2022-01-10 03:26:37,030 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 03:26:37,030 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound100.c
[2022-01-10 03:26:37,035 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a0c11c9d/f79152f7c3b649688c24f8a34f367182/FLAGa174b651c
[2022-01-10 03:26:37,044 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a0c11c9d/f79152f7c3b649688c24f8a34f367182
[2022-01-10 03:26:37,046 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 03:26:37,047 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 03:26:37,048 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 03:26:37,048 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 03:26:37,050 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 03:26:37,050 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,051 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1a8e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37, skipping insertion in model container
[2022-01-10 03:26:37,051 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,056 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 03:26:37,064 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 03:26:37,162 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound100.c[524,537]
[2022-01-10 03:26:37,175 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:26:37,185 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 03:26:37,210 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound100.c[524,537]
[2022-01-10 03:26:37,216 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:26:37,235 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 03:26:37,236 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37 WrapperNode
[2022-01-10 03:26:37,236 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 03:26:37,238 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 03:26:37,238 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 03:26:37,238 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 03:26:37,243 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,249 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,260 INFO  L137                Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51
[2022-01-10 03:26:37,261 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 03:26:37,261 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 03:26:37,261 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 03:26:37,261 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 03:26:37,266 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,266 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,268 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,268 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,271 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,273 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,274 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,275 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 03:26:37,276 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 03:26:37,276 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 03:26:37,276 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 03:26:37,283 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (1/1) ...
[2022-01-10 03:26:37,289 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:26:37,297 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 03:26:37,308 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 03:26:37,317 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 03:26:37,342 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 03:26:37,342 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 03:26:37,342 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-01-10 03:26:37,342 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-01-10 03:26:37,342 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 03:26:37,343 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 03:26:37,343 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-10 03:26:37,343 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-10 03:26:37,389 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 03:26:37,390 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 03:26:38,127 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 03:26:38,131 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 03:26:38,132 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 03:26:38,133 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:26:38 BoogieIcfgContainer
[2022-01-10 03:26:38,133 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 03:26:38,134 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 03:26:38,134 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 03:26:38,136 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 03:26:38,136 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:26:37" (1/3) ...
[2022-01-10 03:26:38,137 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48954b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:26:38, skipping insertion in model container
[2022-01-10 03:26:38,137 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:37" (2/3) ...
[2022-01-10 03:26:38,137 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48954b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:26:38, skipping insertion in model container
[2022-01-10 03:26:38,137 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:26:38" (3/3) ...
[2022-01-10 03:26:38,138 INFO  L111   eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound100.c
[2022-01-10 03:26:38,141 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 03:26:38,142 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 03:26:38,189 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 03:26:38,194 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
[2022-01-10 03:26:38,194 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 03:26:38,219 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-10 03:26:38,222 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-01-10 03:26:38,223 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:26:38,223 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:26:38,224 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:26:38,228 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:26:38,228 INFO  L85        PathProgramCache]: Analyzing trace with hash 1472905330, now seen corresponding path program 1 times
[2022-01-10 03:26:38,235 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:26:38,237 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050932669]
[2022-01-10 03:26:38,237 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:26:38,238 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:26:38,238 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:26:38,243 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:26:38,245 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2022-01-10 03:26:38,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:26:38,375 INFO  L263         TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-01-10 03:26:38,378 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:26:38,449 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-01-10 03:26:38,449 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 03:26:38,450 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:26:38,450 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050932669]
[2022-01-10 03:26:38,450 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050932669] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 03:26:38,450 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 03:26:38,450 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 03:26:38,452 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508483000]
[2022-01-10 03:26:38,452 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:26:38,455 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 03:26:38,455 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:26:38,471 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 03:26:38,472 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 03:26:38,473 INFO  L87              Difference]: Start difference. First operand  has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand  has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-01-10 03:26:38,486 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:26:38,486 INFO  L93              Difference]: Finished difference Result 55 states and 82 transitions.
[2022-01-10 03:26:38,486 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 03:26:38,487 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24
[2022-01-10 03:26:38,488 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:26:38,492 INFO  L225             Difference]: With dead ends: 55
[2022-01-10 03:26:38,492 INFO  L226             Difference]: Without dead ends: 25
[2022-01-10 03:26:38,494 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 03:26:38,496 INFO  L933         BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 03:26:38,497 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 03:26:38,507 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-10 03:26:38,518 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2022-01-10 03:26:38,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-10 03:26:38,520 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions.
[2022-01-10 03:26:38,521 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 24
[2022-01-10 03:26:38,521 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:26:38,521 INFO  L470      AbstractCegarLoop]: Abstraction has 25 states and 32 transitions.
[2022-01-10 03:26:38,521 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-01-10 03:26:38,521 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions.
[2022-01-10 03:26:38,522 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-01-10 03:26:38,522 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:26:38,523 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:26:38,532 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0
[2022-01-10 03:26:38,731 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:26:38,731 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:26:38,732 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:26:38,732 INFO  L85        PathProgramCache]: Analyzing trace with hash 324198000, now seen corresponding path program 1 times
[2022-01-10 03:26:38,733 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:26:38,733 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606796296]
[2022-01-10 03:26:38,733 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:26:38,733 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:26:38,733 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:26:38,734 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:26:38,736 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2022-01-10 03:26:38,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:26:38,873 INFO  L263         TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-01-10 03:26:38,875 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:26:39,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 03:26:39,234 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:26:47,874 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-01-10 03:26:47,874 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:26:47,874 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606796296]
[2022-01-10 03:26:47,874 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606796296] provided 1 perfect and 1 imperfect interpolant sequences
[2022-01-10 03:26:47,874 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-10 03:26:47,875 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2022-01-10 03:26:47,875 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711269315]
[2022-01-10 03:26:47,875 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:26:47,876 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 03:26:47,876 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:26:47,876 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 03:26:47,876 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2022-01-10 03:26:47,877 INFO  L87              Difference]: Start difference. First operand 25 states and 32 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)
[2022-01-10 03:26:54,998 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:26:58,705 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:27:00,817 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:27:02,859 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:27:04,218 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:27:06,274 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:27:08,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:27:08,378 INFO  L93              Difference]: Finished difference Result 39 states and 51 transitions.
[2022-01-10 03:27:08,404 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 03:27:08,404 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
[2022-01-10 03:27:08,404 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:27:08,405 INFO  L225             Difference]: With dead ends: 39
[2022-01-10 03:27:08,405 INFO  L226             Difference]: Without dead ends: 37
[2022-01-10 03:27:08,405 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156
[2022-01-10 03:27:08,406 INFO  L933         BasicCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time
[2022-01-10 03:27:08,407 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 4 Unknown, 0 Unchecked, 20.1s Time]
[2022-01-10 03:27:08,407 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2022-01-10 03:27:08,411 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31.
[2022-01-10 03:27:08,411 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-10 03:27:08,412 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions.
[2022-01-10 03:27:08,412 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 24
[2022-01-10 03:27:08,412 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:27:08,412 INFO  L470      AbstractCegarLoop]: Abstraction has 31 states and 38 transitions.
[2022-01-10 03:27:08,413 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)
[2022-01-10 03:27:08,413 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions.
[2022-01-10 03:27:08,413 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-01-10 03:27:08,413 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:27:08,413 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]
[2022-01-10 03:27:08,425 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2022-01-10 03:27:08,614 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:27:08,614 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:27:08,615 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:27:08,615 INFO  L85        PathProgramCache]: Analyzing trace with hash 693549193, now seen corresponding path program 1 times
[2022-01-10 03:27:08,615 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:27:08,615 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011603182]
[2022-01-10 03:27:08,615 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:27:08,615 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:27:08,616 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:27:08,616 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:27:08,618 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2022-01-10 03:27:08,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:27:08,737 INFO  L263         TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-01-10 03:27:08,739 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:27:10,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-01-10 03:27:10,164 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 03:27:10,164 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:27:10,164 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011603182]
[2022-01-10 03:27:10,164 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011603182] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 03:27:10,164 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 03:27:10,165 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2022-01-10 03:27:10,165 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815856898]
[2022-01-10 03:27:10,165 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:27:10,165 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-10 03:27:10,165 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:27:10,166 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-10 03:27:10,166 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2022-01-10 03:27:10,166 INFO  L87              Difference]: Start difference. First operand 31 states and 38 transitions. Second operand  has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 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)
[2022-01-10 03:27:12,266 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:27:12,267 INFO  L93              Difference]: Finished difference Result 43 states and 54 transitions.
[2022-01-10 03:27:12,276 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-10 03:27:12,276 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 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) Word has length 30
[2022-01-10 03:27:12,277 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:27:12,277 INFO  L225             Difference]: With dead ends: 43
[2022-01-10 03:27:12,277 INFO  L226             Difference]: Without dead ends: 35
[2022-01-10 03:27:12,278 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182
[2022-01-10 03:27:12,278 INFO  L933         BasicCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2022-01-10 03:27:12,279 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 119 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2022-01-10 03:27:12,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2022-01-10 03:27:12,284 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32.
[2022-01-10 03:27:12,284 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-10 03:27:12,285 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions.
[2022-01-10 03:27:12,285 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 30
[2022-01-10 03:27:12,285 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:27:12,285 INFO  L470      AbstractCegarLoop]: Abstraction has 32 states and 39 transitions.
[2022-01-10 03:27:12,285 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 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)
[2022-01-10 03:27:12,286 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions.
[2022-01-10 03:27:12,286 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-01-10 03:27:12,286 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:27:12,286 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]
[2022-01-10 03:27:12,295 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2022-01-10 03:27:12,491 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:27:12,492 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:27:12,492 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:27:12,492 INFO  L85        PathProgramCache]: Analyzing trace with hash 1087866724, now seen corresponding path program 1 times
[2022-01-10 03:27:12,492 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:27:12,492 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033788447]
[2022-01-10 03:27:12,493 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:27:12,493 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:27:12,493 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:27:12,494 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:27:12,495 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2022-01-10 03:27:13,209 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:27:13,234 INFO  L263         TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-01-10 03:27:13,236 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:27:33,328 WARN  L228               SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2022-01-10 03:27:46,605 WARN  L228               SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2022-01-10 03:27:47,149 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-01-10 03:27:47,149 INFO  L328         TraceCheckSpWp]: Computing backward predicates...