/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/geo1-ll_valuebound20.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 03:14:25,531 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 03:14:25,533 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 03:14:25,565 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 03:14:25,565 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 03:14:25,567 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 03:14:25,570 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 03:14:25,580 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 03:14:25,582 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 03:14:25,584 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 03:14:25,585 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 03:14:25,588 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 03:14:25,588 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 03:14:25,589 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 03:14:25,611 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 03:14:25,613 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 03:14:25,627 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 03:14:25,629 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 03:14:25,631 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 03:14:25,632 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 03:14:25,639 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 03:14:25,640 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 03:14:25,642 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 03:14:25,642 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 03:14:25,643 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 03:14:25,643 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 03:14:25,644 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 03:14:25,645 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 03:14:25,646 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 03:14:25,647 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 03:14:25,647 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 03:14:25,648 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 03:14:25,648 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 03:14:25,648 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 03:14:25,649 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 03:14:25,650 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 03:14:25,673 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 03:14:25,673 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 03:14:25,674 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 03:14:25,674 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 03:14:25,674 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 03:14:25,674 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 03:14:25,675 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 03:14:25,675 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 03:14:25,675 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 03:14:25,675 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 03:14:25,675 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 03:14:25,675 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 03:14:25,676 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 03:14:25,676 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 03:14:25,676 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 03:14:25,676 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 03:14:25,676 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 03:14:25,676 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 03:14:25,676 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 03:14:25,676 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 03:14:25,677 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 03:14:25,677 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 03:14:25,677 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 03:14:25,677 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:14:25,677 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 03:14:25,677 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 03:14:25,677 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 03:14:25,677 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 03:14:25,677 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 03:14:25,678 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 03:14:25,678 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 03:14:25,678 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 03:14:25,678 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 03:14:25,678 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 03:14:25,868 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 03:14:25,884 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 03:14:25,886 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 03:14:25,886 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 03:14:25,887 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 03:14:25,888 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound20.c
[2022-01-10 03:14:25,946 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7635513c8/f29de314fa034dd68e371a47ab77c9a6/FLAGd3c84a35a
[2022-01-10 03:14:26,269 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 03:14:26,270 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound20.c
[2022-01-10 03:14:26,275 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7635513c8/f29de314fa034dd68e371a47ab77c9a6/FLAGd3c84a35a
[2022-01-10 03:14:26,697 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7635513c8/f29de314fa034dd68e371a47ab77c9a6
[2022-01-10 03:14:26,699 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 03:14:26,700 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 03:14:26,704 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 03:14:26,704 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 03:14:26,706 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 03:14:26,707 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,708 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254078f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26, skipping insertion in model container
[2022-01-10 03:14:26,708 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,713 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 03:14:26,726 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 03:14:26,853 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/geo1-ll_valuebound20.c[546,559]
[2022-01-10 03:14:26,865 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:14:26,874 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 03:14:26,909 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/geo1-ll_valuebound20.c[546,559]
[2022-01-10 03:14:26,929 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:14:26,939 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 03:14:26,940 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26 WrapperNode
[2022-01-10 03:14:26,940 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 03:14:26,941 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 03:14:26,941 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 03:14:26,941 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 03:14:26,947 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,953 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,965 INFO  L137                Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40
[2022-01-10 03:14:26,966 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 03:14:26,966 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 03:14:26,966 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 03:14:26,967 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 03:14:26,973 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,973 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,985 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,985 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,989 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,991 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,992 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:26,996 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 03:14:26,999 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 03:14:26,999 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 03:14:26,999 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 03:14:27,000 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (1/1) ...
[2022-01-10 03:14:27,005 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:14:27,015 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 03:14:27,025 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 03:14:27,030 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 03:14:27,053 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 03:14:27,054 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 03:14:27,054 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-01-10 03:14:27,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-01-10 03:14:27,055 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 03:14:27,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 03:14:27,055 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-10 03:14:27,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-10 03:14:27,099 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 03:14:27,100 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 03:14:27,269 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 03:14:27,283 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 03:14:27,284 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 03:14:27,285 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:14:27 BoogieIcfgContainer
[2022-01-10 03:14:27,285 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 03:14:27,287 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 03:14:27,287 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 03:14:27,291 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 03:14:27,291 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:14:26" (1/3) ...
[2022-01-10 03:14:27,292 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92c114e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:14:27, skipping insertion in model container
[2022-01-10 03:14:27,292 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:14:26" (2/3) ...
[2022-01-10 03:14:27,292 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92c114e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:14:27, skipping insertion in model container
[2022-01-10 03:14:27,292 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:14:27" (3/3) ...
[2022-01-10 03:14:27,293 INFO  L111   eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound20.c
[2022-01-10 03:14:27,297 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 03:14:27,297 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 03:14:27,344 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 03:14:27,373 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 03:14:27,373 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 03:14:27,390 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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 03:14:27,394 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-10 03:14:27,395 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:14:27,395 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:14:27,396 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:14:27,400 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:14:27,400 INFO  L85        PathProgramCache]: Analyzing trace with hash -439363615, now seen corresponding path program 1 times
[2022-01-10 03:14:27,411 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:14:27,411 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333388109]
[2022-01-10 03:14:27,412 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:14:27,412 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:14:27,412 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:14:27,414 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 03:14:27,415 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 03:14:27,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:14:27,506 INFO  L263         TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-01-10 03:14:27,510 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:14:27,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2022-01-10 03:14:27,625 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 03:14:27,626 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:14:27,626 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333388109]
[2022-01-10 03:14:27,626 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333388109] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 03:14:27,627 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 03:14:27,627 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 03:14:27,628 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047185490]
[2022-01-10 03:14:27,629 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:14:27,633 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 03:14:27,634 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:14:27,666 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 03:14:27,667 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 03:14:27,669 INFO  L87              Difference]: Start difference. First operand  has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)
[2022-01-10 03:14:27,692 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:14:27,693 INFO  L93              Difference]: Finished difference Result 51 states and 72 transitions.
[2022-01-10 03:14:27,694 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 03:14:27,695 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29
[2022-01-10 03:14:27,695 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:14:27,709 INFO  L225             Difference]: With dead ends: 51
[2022-01-10 03:14:27,709 INFO  L226             Difference]: Without dead ends: 23
[2022-01-10 03:14:27,714 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 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 03:14:27,720 INFO  L933         BasicCegarLoop]: 31 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, 31 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 03:14:27,722 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 03:14:27,736 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2022-01-10 03:14:27,761 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2022-01-10 03:14:27,762 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 03:14:27,763 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2022-01-10 03:14:27,764 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29
[2022-01-10 03:14:27,764 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:14:27,765 INFO  L470      AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2022-01-10 03:14:27,765 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)
[2022-01-10 03:14:27,765 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2022-01-10 03:14:27,767 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-10 03:14:27,767 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:14:27,767 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:14:27,780 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2022-01-10 03:14:27,977 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 03:14:27,978 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:14:27,979 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:14:27,979 INFO  L85        PathProgramCache]: Analyzing trace with hash 1976149669, now seen corresponding path program 1 times
[2022-01-10 03:14:27,979 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:14:27,980 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066431163]
[2022-01-10 03:14:27,980 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:14:27,980 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:14:27,980 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:14:27,981 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 03:14:27,983 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 03:14:28,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:14:28,043 INFO  L263         TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-01-10 03:14:28,045 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:14:28,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-01-10 03:14:28,424 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:14:29,123 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-01-10 03:14:29,124 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:14:29,124 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066431163]
[2022-01-10 03:14:29,124 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066431163] provided 1 perfect and 1 imperfect interpolant sequences
[2022-01-10 03:14:29,124 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-10 03:14:29,124 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2022-01-10 03:14:29,125 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170362882]
[2022-01-10 03:14:29,125 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:14:29,126 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 03:14:29,126 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:14:29,126 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 03:14:29,127 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2022-01-10 03:14:29,127 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2022-01-10 03:14:31,391 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:14:31,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:14:31,883 INFO  L93              Difference]: Finished difference Result 33 states and 38 transitions.
[2022-01-10 03:14:31,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 03:14:31,903 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29
[2022-01-10 03:14:31,903 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:14:31,904 INFO  L225             Difference]: With dead ends: 33
[2022-01-10 03:14:31,904 INFO  L226             Difference]: Without dead ends: 31
[2022-01-10 03:14:31,905 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156
[2022-01-10 03:14:31,906 INFO  L933         BasicCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2022-01-10 03:14:31,906 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 87 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time]
[2022-01-10 03:14:31,907 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-01-10 03:14:31,912 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29.
[2022-01-10 03:14:31,912 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 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 03:14:31,913 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions.
[2022-01-10 03:14:31,913 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 29
[2022-01-10 03:14:31,914 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:14:31,914 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 33 transitions.
[2022-01-10 03:14:31,914 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2022-01-10 03:14:31,914 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions.
[2022-01-10 03:14:31,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-01-10 03:14:31,915 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:14:31,915 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:14:31,927 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 03:14:32,125 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 03:14:32,125 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:14:32,126 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:14:32,126 INFO  L85        PathProgramCache]: Analyzing trace with hash -900153941, now seen corresponding path program 1 times
[2022-01-10 03:14:32,126 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:14:32,126 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235123347]
[2022-01-10 03:14:32,127 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:14:32,127 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:14:32,127 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:14:32,128 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 03:14:32,130 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 03:14:32,209 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:14:32,221 INFO  L263         TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-01-10 03:14:32,223 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:14:32,638 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-01-10 03:14:32,639 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:14:34,231 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-01-10 03:14:34,232 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:14:34,232 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235123347]
[2022-01-10 03:14:34,232 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235123347] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 03:14:34,232 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 03:14:34,232 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16
[2022-01-10 03:14:34,232 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041079741]
[2022-01-10 03:14:34,233 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 03:14:34,233 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-10 03:14:34,233 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:14:34,234 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-10 03:14:34,234 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240
[2022-01-10 03:14:34,234 INFO  L87              Difference]: Start difference. First operand 29 states and 33 transitions. Second operand  has 16 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10)
[2022-01-10 03:14:37,583 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:14:39,603 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:14:41,724 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:14:42,023 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:14:42,023 INFO  L93              Difference]: Finished difference Result 43 states and 49 transitions.
[2022-01-10 03:14:42,024 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2022-01-10 03:14:42,024 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 36
[2022-01-10 03:14:42,024 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:14:42,025 INFO  L225             Difference]: With dead ends: 43
[2022-01-10 03:14:42,025 INFO  L226             Difference]: Without dead ends: 33
[2022-01-10 03:14:42,025 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420
[2022-01-10 03:14:42,027 INFO  L933         BasicCegarLoop]: 18 mSDtfsCounter, 30 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2022-01-10 03:14:42,028 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 162 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 125 Invalid, 3 Unknown, 1 Unchecked, 7.2s Time]
[2022-01-10 03:14:42,028 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-01-10 03:14:42,033 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2022-01-10 03:14:42,033 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-10 03:14:42,034 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions.
[2022-01-10 03:14:42,034 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 36
[2022-01-10 03:14:42,035 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:14:42,035 INFO  L470      AbstractCegarLoop]: Abstraction has 33 states and 38 transitions.
[2022-01-10 03:14:42,035 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10)
[2022-01-10 03:14:42,035 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions.
[2022-01-10 03:14:42,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-01-10 03:14:42,036 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:14:42,036 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:14:42,052 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 03:14:42,250 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 03:14:42,250 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:14:42,251 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:14:42,251 INFO  L85        PathProgramCache]: Analyzing trace with hash -852190431, now seen corresponding path program 1 times
[2022-01-10 03:14:42,252 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:14:42,252 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534002454]
[2022-01-10 03:14:42,252 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:14:42,252 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:14:42,252 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:14:42,253 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 03:14:42,254 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 03:14:42,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:14:42,369 INFO  L263         TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-01-10 03:14:42,372 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:14:43,632 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-01-10 03:14:43,632 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:14:58,605 WARN  L860   $PredicateComparison]: unable to prove that (let ((.cse2 ((_ sign_extend 32) |c_ULTIMATE.start_main_~z~0#1|))) (let ((.cse0 (bvmul |c_ULTIMATE.start_main_~x~0#1| .cse2))) (or (not (= (_ bv0 64) (bvadd (bvneg |c_ULTIMATE.start_main_~x~0#1|) (bvneg |c_ULTIMATE.start_main_~y~0#1|) .cse0 (_ bv1 64)))) (= (let ((.cse1 (bvadd .cse0 (_ bv1 64)))) (bvadd (bvneg .cse1) (_ bv1 64) (bvmul .cse2 .cse1) (bvneg (bvmul |c_ULTIMATE.start_main_~y~0#1| .cse2)))) (_ bv0 64))))) is different from true
[2022-01-10 03:15:03,727 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 2 not checked.
[2022-01-10 03:15:03,728 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:15:03,728 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534002454]
[2022-01-10 03:15:03,728 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [534002454] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 03:15:03,728 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 03:15:03,728 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17
[2022-01-10 03:15:03,728 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105772206]
[2022-01-10 03:15:03,728 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 03:15:03,729 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-01-10 03:15:03,729 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:15:03,729 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-01-10 03:15:03,730 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=197, Unknown=2, NotChecked=28, Total=272
[2022-01-10 03:15:03,730 INFO  L87              Difference]: Start difference. First operand 33 states and 38 transitions. Second operand  has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2022-01-10 03:15:14,674 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:15:21,820 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:15:24,906 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:15:27,321 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:15:27,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:15:27,343 INFO  L93              Difference]: Finished difference Result 45 states and 52 transitions.
[2022-01-10 03:15:27,352 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2022-01-10 03:15:27,352 INFO  L78                 Accepts]: Start accepts. Automaton has  has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 36
[2022-01-10 03:15:27,353 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:15:27,355 INFO  L225             Difference]: With dead ends: 45
[2022-01-10 03:15:27,355 INFO  L226             Difference]: Without dead ends: 43
[2022-01-10 03:15:27,356 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=4, NotChecked=38, Total=462
[2022-01-10 03:15:27,356 INFO  L933         BasicCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 23 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time
[2022-01-10 03:15:27,357 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 143 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 152 Invalid, 4 Unknown, 37 Unchecked, 12.8s Time]
[2022-01-10 03:15:27,357 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2022-01-10 03:15:27,364 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42.
[2022-01-10 03:15:27,364 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-10 03:15:27,365 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions.
[2022-01-10 03:15:27,365 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 36
[2022-01-10 03:15:27,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:15:27,366 INFO  L470      AbstractCegarLoop]: Abstraction has 42 states and 49 transitions.
[2022-01-10 03:15:27,366 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2022-01-10 03:15:27,366 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions.
[2022-01-10 03:15:27,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2022-01-10 03:15:27,367 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:15:27,368 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:15:27,385 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2022-01-10 03:15:27,581 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:15:27,582 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:15:27,582 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:15:27,583 INFO  L85        PathProgramCache]: Analyzing trace with hash -721653461, now seen corresponding path program 1 times
[2022-01-10 03:15:27,583 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:15:27,583 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513211109]
[2022-01-10 03:15:27,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:15:27,583 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:15:27,583 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:15:27,584 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:15:27,586 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2022-01-10 03:15:27,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:15:27,777 INFO  L263         TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-01-10 03:15:27,780 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:15:38,435 INFO  L134       CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-01-10 03:15:38,435 INFO  L328         TraceCheckSpWp]: Computing backward predicates...