/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/bitvector/interleave_bits.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 02:38:39,701 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 02:38:39,703 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 02:38:39,749 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 02:38:39,749 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 02:38:39,750 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 02:38:39,751 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 02:38:39,752 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 02:38:39,758 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 02:38:39,760 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 02:38:39,760 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 02:38:39,761 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 02:38:39,761 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 02:38:39,762 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 02:38:39,762 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 02:38:39,763 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 02:38:39,764 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 02:38:39,768 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 02:38:39,769 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 02:38:39,770 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 02:38:39,771 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 02:38:39,776 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 02:38:39,776 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 02:38:39,777 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 02:38:39,778 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 02:38:39,778 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 02:38:39,779 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 02:38:39,779 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 02:38:39,779 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 02:38:39,780 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 02:38:39,780 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 02:38:39,780 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 02:38:39,781 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 02:38:39,781 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 02:38:39,782 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 02:38:39,782 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 02:38:39,782 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 02:38:39,783 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 02:38:39,783 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 02:38:39,783 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 02:38:39,784 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 02:38:39,788 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 02:38:39,814 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 02:38:39,814 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 02:38:39,815 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 02:38:39,815 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 02:38:39,816 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 02:38:39,816 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 02:38:39,816 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 02:38:39,816 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 02:38:39,816 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 02:38:39,816 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 02:38:39,817 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 02:38:39,818 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 02:38:39,818 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 02:38:39,819 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 02:38:39,820 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 02:38:39,820 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 02:38:39,820 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 02:38:39,820 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 02:38:39,820 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 02:38:39,820 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 02:38:39,820 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 02:38:39,820 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 02:38:39,821 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 02:38:39,821 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 02:38:39,982 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 02:38:39,998 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 02:38:40,000 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 02:38:40,001 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 02:38:40,001 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 02:38:40,002 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/interleave_bits.i
[2022-01-10 02:38:40,048 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c72c5ad2b/33e9d7751d8748168c6302b3a83d29a2/FLAG14ac08c3d
[2022-01-10 02:38:40,427 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 02:38:40,427 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i
[2022-01-10 02:38:40,435 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c72c5ad2b/33e9d7751d8748168c6302b3a83d29a2/FLAG14ac08c3d
[2022-01-10 02:38:40,454 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c72c5ad2b/33e9d7751d8748168c6302b3a83d29a2
[2022-01-10 02:38:40,456 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 02:38:40,457 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 02:38:40,459 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 02:38:40,459 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 02:38:40,461 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 02:38:40,462 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,462 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb49025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40, skipping insertion in model container
[2022-01-10 02:38:40,462 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,466 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 02:38:40,482 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 02:38:40,588 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i[1175,1188]
[2022-01-10 02:38:40,614 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 02:38:40,622 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 02:38:40,633 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i[1175,1188]
[2022-01-10 02:38:40,649 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 02:38:40,659 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 02:38:40,659 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40 WrapperNode
[2022-01-10 02:38:40,659 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 02:38:40,660 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 02:38:40,660 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 02:38:40,660 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 02:38:40,665 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,671 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,683 INFO  L137                Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42
[2022-01-10 02:38:40,683 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 02:38:40,684 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 02:38:40,684 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 02:38:40,684 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 02:38:40,689 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,689 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,699 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,699 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,704 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,706 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,706 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,707 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 02:38:40,708 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 02:38:40,708 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 02:38:40,708 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 02:38:40,709 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (1/1) ...
[2022-01-10 02:38:40,719 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 02:38:40,731 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 02:38:40,740 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 02:38:40,754 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 02:38:40,763 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 02:38:40,764 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 02:38:40,764 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 02:38:40,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 02:38:40,800 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 02:38:40,801 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 02:38:40,922 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 02:38:40,926 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 02:38:40,926 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 02:38:40,927 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:38:40 BoogieIcfgContainer
[2022-01-10 02:38:40,927 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 02:38:40,928 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 02:38:40,928 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 02:38:40,930 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 02:38:40,930 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:38:40" (1/3) ...
[2022-01-10 02:38:40,931 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274872bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:38:40, skipping insertion in model container
[2022-01-10 02:38:40,931 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:38:40" (2/3) ...
[2022-01-10 02:38:40,931 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274872bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:38:40, skipping insertion in model container
[2022-01-10 02:38:40,931 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:38:40" (3/3) ...
[2022-01-10 02:38:40,932 INFO  L111   eAbstractionObserver]: Analyzing ICFG interleave_bits.i
[2022-01-10 02:38:40,935 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 02:38:40,935 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 02:38:41,011 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 02:38:41,015 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 02:38:41,016 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 02:38:41,024 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:41,027 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 02:38:41,027 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:38:41,027 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 02:38:41,028 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:38:41,031 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:38:41,031 INFO  L85        PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times
[2022-01-10 02:38:41,044 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 02:38:41,044 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722879992]
[2022-01-10 02:38:41,045 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 02:38:41,045 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 02:38:41,045 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 02:38:41,061 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 02:38:41,062 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 02:38:41,108 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 02:38:41,110 INFO  L263         TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 02:38:41,112 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 02:38:41,162 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:38:41,163 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 02:38:41,163 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 02:38:41,163 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722879992]
[2022-01-10 02:38:41,164 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722879992] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 02:38:41,164 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 02:38:41,164 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 02:38:41,166 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791346613]
[2022-01-10 02:38:41,167 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 02:38:41,170 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 02:38:41,170 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 02:38:41,189 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 02:38:41,190 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 02:38:41,191 INFO  L87              Difference]: Start difference. First operand  has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:41,207 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 02:38:41,208 INFO  L93              Difference]: Finished difference Result 20 states and 24 transitions.
[2022-01-10 02:38:41,209 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 02:38:41,210 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2022-01-10 02:38:41,210 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 02:38:41,215 INFO  L225             Difference]: With dead ends: 20
[2022-01-10 02:38:41,215 INFO  L226             Difference]: Without dead ends: 8
[2022-01-10 02:38:41,217 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 02:38:41,220 INFO  L933         BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 02:38:41,221 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 02:38:41,232 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2022-01-10 02:38:41,245 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2022-01-10 02:38:41,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:41,247 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2022-01-10 02:38:41,248 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6
[2022-01-10 02:38:41,248 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 02:38:41,248 INFO  L470      AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2022-01-10 02:38:41,248 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:41,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2022-01-10 02:38:41,249 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-01-10 02:38:41,249 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:38:41,249 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:38:41,255 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 02:38:41,455 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 02:38:41,456 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:38:41,456 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:38:41,457 INFO  L85        PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times
[2022-01-10 02:38:41,457 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 02:38:41,457 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237260982]
[2022-01-10 02:38:41,457 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 02:38:41,457 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 02:38:41,458 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 02:38:41,460 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 02:38:41,496 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 02:38:41,499 INFO  L263         TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-01-10 02:38:41,500 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 02:38:41,500 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 02:38:41,528 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:38:41,528 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 02:38:41,562 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:38:41,563 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 02:38:41,563 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237260982]
[2022-01-10 02:38:41,563 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237260982] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 02:38:41,564 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 02:38:41,564 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2022-01-10 02:38:41,564 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528165876]
[2022-01-10 02:38:41,566 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 02:38:41,567 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 02:38:41,568 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 02:38:41,569 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 02:38:41,569 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2022-01-10 02:38:41,569 INFO  L87              Difference]: Start difference. First operand 8 states and 8 transitions. Second operand  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:41,611 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 02:38:41,612 INFO  L93              Difference]: Finished difference Result 15 states and 17 transitions.
[2022-01-10 02:38:41,612 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 02:38:41,612 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2022-01-10 02:38:41,612 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 02:38:41,612 INFO  L225             Difference]: With dead ends: 15
[2022-01-10 02:38:41,613 INFO  L226             Difference]: Without dead ends: 11
[2022-01-10 02:38:41,613 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2022-01-10 02:38:41,614 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 02:38:41,614 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 02:38:41,614 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2022-01-10 02:38:41,616 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11.
[2022-01-10 02:38:41,616 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:41,616 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions.
[2022-01-10 02:38:41,616 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7
[2022-01-10 02:38:41,617 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 02:38:41,617 INFO  L470      AbstractCegarLoop]: Abstraction has 11 states and 11 transitions.
[2022-01-10 02:38:41,617 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:41,617 INFO  L276                IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions.
[2022-01-10 02:38:41,617 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-01-10 02:38:41,617 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:38:41,617 INFO  L514         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:38:41,626 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 02:38:41,827 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 02:38:41,828 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:38:41,828 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:38:41,828 INFO  L85        PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times
[2022-01-10 02:38:41,829 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 02:38:41,829 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872477454]
[2022-01-10 02:38:41,829 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 02:38:41,829 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 02:38:41,829 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 02:38:41,836 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 02:38:41,837 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 02:38:41,866 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 02:38:41,866 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 02:38:41,869 INFO  L263         TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 02:38:41,870 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 02:38:41,926 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:38:41,927 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 02:38:41,991 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:38:41,991 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 02:38:41,991 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872477454]
[2022-01-10 02:38:41,992 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [872477454] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 02:38:41,992 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 02:38:41,992 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2022-01-10 02:38:41,992 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339064027]
[2022-01-10 02:38:41,992 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 02:38:41,992 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-01-10 02:38:41,992 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 02:38:41,993 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-01-10 02:38:41,993 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2022-01-10 02:38:41,993 INFO  L87              Difference]: Start difference. First operand 11 states and 11 transitions. Second operand  has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:42,101 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 02:38:42,101 INFO  L93              Difference]: Finished difference Result 21 states and 26 transitions.
[2022-01-10 02:38:42,101 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-01-10 02:38:42,101 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2022-01-10 02:38:42,102 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 02:38:42,102 INFO  L225             Difference]: With dead ends: 21
[2022-01-10 02:38:42,102 INFO  L226             Difference]: Without dead ends: 17
[2022-01-10 02:38:42,103 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240
[2022-01-10 02:38:42,103 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 02:38:42,103 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 02:38:42,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-01-10 02:38:42,106 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2022-01-10 02:38:42,106 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:42,107 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions.
[2022-01-10 02:38:42,107 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10
[2022-01-10 02:38:42,107 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 02:38:42,107 INFO  L470      AbstractCegarLoop]: Abstraction has 17 states and 17 transitions.
[2022-01-10 02:38:42,107 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:42,107 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions.
[2022-01-10 02:38:42,107 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-10 02:38:42,108 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:38:42,108 INFO  L514         BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:38:42,117 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 02:38:42,314 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 02:38:42,315 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:38:42,315 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:38:42,315 INFO  L85        PathProgramCache]: Analyzing trace with hash 1628318539, now seen corresponding path program 3 times
[2022-01-10 02:38:42,316 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 02:38:42,316 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480955646]
[2022-01-10 02:38:42,316 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 02:38:42,316 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 02:38:42,316 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 02:38:42,317 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 02:38:42,319 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 02:38:42,369 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2022-01-10 02:38:42,369 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 02:38:42,374 INFO  L263         TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-01-10 02:38:42,375 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 02:38:42,475 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:38:42,476 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 02:38:42,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:38:42,829 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 02:38:42,829 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480955646]
[2022-01-10 02:38:42,830 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [480955646] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 02:38:42,830 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 02:38:42,830 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24
[2022-01-10 02:38:42,830 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037541212]
[2022-01-10 02:38:42,830 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 02:38:42,830 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-01-10 02:38:42,830 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 02:38:42,831 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-01-10 02:38:42,831 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552
[2022-01-10 02:38:42,831 INFO  L87              Difference]: Start difference. First operand 17 states and 17 transitions. Second operand  has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:43,672 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 02:38:43,672 INFO  L93              Difference]: Finished difference Result 33 states and 44 transitions.
[2022-01-10 02:38:43,672 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2022-01-10 02:38:43,672 INFO  L78                 Accepts]: Start accepts. Automaton has  has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2022-01-10 02:38:43,673 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 02:38:43,673 INFO  L225             Difference]: With dead ends: 33
[2022-01-10 02:38:43,673 INFO  L226             Difference]: Without dead ends: 29
[2022-01-10 02:38:43,674 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=370, Invalid=820, Unknown=0, NotChecked=0, Total=1190
[2022-01-10 02:38:43,674 INFO  L933         BasicCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 02:38:43,674 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 19 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 02:38:43,675 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2022-01-10 02:38:43,684 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2022-01-10 02:38:43,684 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:43,685 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions.
[2022-01-10 02:38:43,685 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 16
[2022-01-10 02:38:43,685 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 02:38:43,685 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 30 transitions.
[2022-01-10 02:38:43,685 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:38:43,685 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions.
[2022-01-10 02:38:43,686 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-01-10 02:38:43,686 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:38:43,686 INFO  L514         BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:38:43,696 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 02:38:43,896 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 02:38:43,897 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:38:43,897 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:38:43,897 INFO  L85        PathProgramCache]: Analyzing trace with hash 26919211, now seen corresponding path program 4 times
[2022-01-10 02:38:43,898 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 02:38:43,898 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832465753]
[2022-01-10 02:38:43,898 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-01-10 02:38:43,898 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 02:38:43,898 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 02:38:43,901 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 02:38:43,902 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 02:38:43,977 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-01-10 02:38:43,977 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 02:38:43,984 WARN  L261         TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 39 conjunts are in the unsatisfiable core
[2022-01-10 02:38:43,986 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 02:38:45,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:38:45,022 INFO  L328         TraceCheckSpWp]: Computing backward predicates...