/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/prodbin-ll_valuebound2.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 03:28:00,954 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 03:28:00,955 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 03:28:00,977 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 03:28:00,977 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 03:28:00,978 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 03:28:00,979 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 03:28:00,980 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 03:28:00,981 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 03:28:00,982 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 03:28:00,983 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 03:28:00,983 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 03:28:00,984 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 03:28:00,985 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 03:28:00,986 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 03:28:00,986 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 03:28:00,997 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 03:28:00,998 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 03:28:01,000 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 03:28:01,015 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 03:28:01,019 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 03:28:01,020 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 03:28:01,020 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 03:28:01,023 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 03:28:01,023 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 03:28:01,024 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 03:28:01,024 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 03:28:01,025 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 03:28:01,025 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 03:28:01,025 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 03:28:01,026 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 03:28:01,026 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 03:28:01,035 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 03:28:01,035 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 03:28:01,035 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 03:28:01,036 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 03:28:01,036 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 03:28:01,039 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 03:28:01,044 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 03:28:01,065 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 03:28:01,065 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 03:28:01,065 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 03:28:01,065 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 03:28:01,066 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 03:28:01,066 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 03:28:01,066 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 03:28:01,067 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 03:28:01,067 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 03:28:01,067 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 03:28:01,067 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 03:28:01,067 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 03:28:01,067 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 03:28:01,067 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 03:28:01,067 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 03:28:01,068 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 03:28:01,068 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 03:28:01,068 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 03:28:01,068 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 03:28:01,068 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 03:28:01,068 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 03:28:01,068 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 03:28:01,068 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 03:28:01,068 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:28:01,068 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 03:28:01,069 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 03:28:01,069 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 03:28:01,069 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 03:28:01,069 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 03:28:01,069 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 03:28:01,069 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 03:28:01,069 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 03:28:01,069 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 03:28:01,069 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 03:28:01,223 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 03:28:01,241 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 03:28:01,246 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 03:28:01,247 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 03:28:01,251 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 03:28:01,252 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound2.c
[2022-01-10 03:28:01,304 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f5ceca4/58fd71d6fb5d43118705f819ac1c5408/FLAG782dabeec
[2022-01-10 03:28:01,655 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 03:28:01,656 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound2.c
[2022-01-10 03:28:01,660 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f5ceca4/58fd71d6fb5d43118705f819ac1c5408/FLAG782dabeec
[2022-01-10 03:28:01,669 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f5ceca4/58fd71d6fb5d43118705f819ac1c5408
[2022-01-10 03:28:01,671 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 03:28:01,672 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 03:28:01,675 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 03:28:01,675 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 03:28:01,678 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 03:28:01,679 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,680 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e148580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01, skipping insertion in model container
[2022-01-10 03:28:01,680 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,685 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 03:28:01,698 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 03:28:01,804 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/prodbin-ll_valuebound2.c[537,550]
[2022-01-10 03:28:01,825 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:28:01,832 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 03:28:01,868 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/prodbin-ll_valuebound2.c[537,550]
[2022-01-10 03:28:01,872 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:28:01,886 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 03:28:01,887 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01 WrapperNode
[2022-01-10 03:28:01,887 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 03:28:01,889 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 03:28:01,889 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 03:28:01,889 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 03:28:01,894 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,901 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,917 INFO  L137                Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40
[2022-01-10 03:28:01,917 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 03:28:01,918 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 03:28:01,918 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 03:28:01,918 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 03:28:01,923 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,923 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,932 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,933 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,936 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,939 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,940 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,941 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 03:28:01,941 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 03:28:01,942 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 03:28:01,942 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 03:28:01,947 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (1/1) ...
[2022-01-10 03:28:01,956 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:28:01,964 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 03:28:01,974 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 03:28:01,984 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 03:28:02,006 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 03:28:02,007 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 03:28:02,007 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-01-10 03:28:02,007 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-01-10 03:28:02,007 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 03:28:02,007 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 03:28:02,007 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-10 03:28:02,007 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-10 03:28:02,047 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 03:28:02,048 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 03:28:02,228 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 03:28:02,232 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 03:28:02,232 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 03:28:02,233 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:28:02 BoogieIcfgContainer
[2022-01-10 03:28:02,233 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 03:28:02,235 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 03:28:02,235 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 03:28:02,239 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 03:28:02,239 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:28:01" (1/3) ...
[2022-01-10 03:28:02,240 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649750d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:28:02, skipping insertion in model container
[2022-01-10 03:28:02,240 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:01" (2/3) ...
[2022-01-10 03:28:02,240 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649750d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:28:02, skipping insertion in model container
[2022-01-10 03:28:02,240 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:28:02" (3/3) ...
[2022-01-10 03:28:02,241 INFO  L111   eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound2.c
[2022-01-10 03:28:02,245 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 03:28:02,245 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 03:28:02,280 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 03:28:02,291 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 03:28:02,291 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 03:28:02,318 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-10 03:28:02,321 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-01-10 03:28:02,322 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:28:02,322 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 03:28:02,323 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:28:02,330 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:28:02,331 INFO  L85        PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times
[2022-01-10 03:28:02,339 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:28:02,340 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522413056]
[2022-01-10 03:28:02,340 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:28:02,341 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:28:02,341 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:28:02,343 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 03:28:02,344 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 03:28:02,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:28:02,458 INFO  L263         TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-01-10 03:28:02,462 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:28:02,551 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 03:28:02,551 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 03:28:02,551 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:28:02,552 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522413056]
[2022-01-10 03:28:02,552 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522413056] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 03:28:02,552 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 03:28:02,553 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 03:28:02,554 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917258029]
[2022-01-10 03:28:02,555 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:28:02,557 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 03:28:02,558 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:28:02,575 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 03:28:02,575 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 03:28:02,577 INFO  L87              Difference]: Start difference. First operand  has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand  has 2 states, 2 states have (on average 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 03:28:02,589 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:28:02,589 INFO  L93              Difference]: Finished difference Result 51 states and 71 transitions.
[2022-01-10 03:28:02,590 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 03:28:02,591 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 03:28:02,591 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:28:02,595 INFO  L225             Difference]: With dead ends: 51
[2022-01-10 03:28:02,595 INFO  L226             Difference]: Without dead ends: 23
[2022-01-10 03:28:02,597 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 03:28:02,600 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 03:28:02,600 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 03:28:02,611 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2022-01-10 03:28:02,621 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2022-01-10 03:28:02,621 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 03:28:02,622 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2022-01-10 03:28:02,623 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24
[2022-01-10 03:28:02,623 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:28:02,623 INFO  L470      AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2022-01-10 03:28:02,624 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 03:28:02,624 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2022-01-10 03:28:02,625 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-01-10 03:28:02,625 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:28:02,625 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 03:28:02,633 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 03:28:02,827 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 03:28:02,828 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:28:02,828 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:28:02,829 INFO  L85        PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times
[2022-01-10 03:28:02,829 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:28:02,829 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346813515]
[2022-01-10 03:28:02,829 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:28:02,829 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:28:02,830 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:28:02,830 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 03:28:02,832 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 03:28:02,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:28:02,921 INFO  L263         TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-01-10 03:28:02,924 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:28:03,317 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 03:28:03,317 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 03:28:03,317 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:28:03,317 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346813515]
[2022-01-10 03:28:03,318 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346813515] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 03:28:03,318 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 03:28:03,318 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-10 03:28:03,319 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506868413]
[2022-01-10 03:28:03,322 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:28:03,323 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-10 03:28:03,324 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:28:03,324 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-10 03:28:03,326 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2022-01-10 03:28:03,326 INFO  L87              Difference]: Start difference. First operand 23 states and 27 transitions. Second operand  has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-10 03:28:03,894 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:28:03,894 INFO  L93              Difference]: Finished difference Result 39 states and 45 transitions.
[2022-01-10 03:28:03,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-10 03:28:03,895 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24
[2022-01-10 03:28:03,895 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:28:03,896 INFO  L225             Difference]: With dead ends: 39
[2022-01-10 03:28:03,896 INFO  L226             Difference]: Without dead ends: 32
[2022-01-10 03:28:03,896 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2022-01-10 03:28:03,897 INFO  L933         BasicCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-10 03:28:03,897 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 96 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-10 03:28:03,898 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2022-01-10 03:28:03,902 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30.
[2022-01-10 03:28:03,902 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-10 03:28:03,902 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2022-01-10 03:28:03,903 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24
[2022-01-10 03:28:03,903 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:28:03,903 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2022-01-10 03:28:03,904 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-10 03:28:03,904 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2022-01-10 03:28:03,904 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-10 03:28:03,904 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:28:03,905 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:28:03,917 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 03:28:04,113 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 03:28:04,114 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:28:04,114 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:28:04,114 INFO  L85        PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times
[2022-01-10 03:28:04,115 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:28:04,115 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79794906]
[2022-01-10 03:28:04,115 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:28:04,115 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:28:04,115 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:28:04,116 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 03:28:04,118 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 03:28:04,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:28:04,231 INFO  L263         TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-01-10 03:28:04,233 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:28:06,649 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 03:28:06,649 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:28:30,374 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:28:30,374 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79794906]
[2022-01-10 03:28:30,375 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [79794906] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 03:28:30,375 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1310795986]
[2022-01-10 03:28:30,375 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:28:30,375 INFO  L168          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2022-01-10 03:28:30,375 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2022-01-10 03:28:30,377 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2022-01-10 03:28:30,380 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2022-01-10 03:28:30,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:28:30,647 INFO  L263         TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-01-10 03:28:30,649 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:28:37,048 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 03:28:37,048 INFO  L328         TraceCheckSpWp]: Computing backward predicates...