/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/eca-rers2012/Problem11_label18.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 04:59:36,566 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 04:59:36,568 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 04:59:36,628 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 04:59:36,628 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 04:59:36,630 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 04:59:36,632 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 04:59:36,635 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 04:59:36,636 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 04:59:36,640 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 04:59:36,640 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 04:59:36,641 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 04:59:36,642 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 04:59:36,643 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 04:59:36,644 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 04:59:36,647 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 04:59:36,647 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 04:59:36,648 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 04:59:36,650 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 04:59:36,654 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 04:59:36,655 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 04:59:36,656 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 04:59:36,658 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 04:59:36,659 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 04:59:36,664 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 04:59:36,664 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 04:59:36,665 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 04:59:36,666 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 04:59:36,666 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 04:59:36,667 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 04:59:36,667 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 04:59:36,667 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 04:59:36,669 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 04:59:36,669 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 04:59:36,670 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 04:59:36,670 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 04:59:36,671 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 04:59:36,671 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 04:59:36,671 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 04:59:36,672 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 04:59:36,672 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 04:59:36,673 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 04:59:36,698 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 04:59:36,698 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 04:59:36,698 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 04:59:36,698 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 04:59:36,699 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 04:59:36,699 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 04:59:36,700 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 04:59:36,700 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 04:59:36,700 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 04:59:36,700 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 04:59:36,701 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 04:59:36,701 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 04:59:36,701 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 04:59:36,701 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 04:59:36,701 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 04:59:36,701 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 04:59:36,701 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 04:59:36,701 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 04:59:36,701 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 04:59:36,702 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 04:59:36,702 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 04:59:36,702 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 04:59:36,702 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 04:59:36,702 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 04:59:36,702 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 04:59:36,702 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 04:59:36,702 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 04:59:36,702 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 04:59:36,703 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 04:59:36,703 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 04:59:36,703 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 04:59:36,703 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 04:59:36,703 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 04:59:36,703 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 04:59:36,907 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 04:59:36,932 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 04:59:36,934 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 04:59:36,935 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 04:59:36,935 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 04:59:36,936 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c
[2022-01-10 04:59:36,994 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44e0f238/06ad11c0b91c43ea8513b6db82e54336/FLAG44a96a5d0
[2022-01-10 04:59:37,487 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 04:59:37,488 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c
[2022-01-10 04:59:37,503 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44e0f238/06ad11c0b91c43ea8513b6db82e54336/FLAG44a96a5d0
[2022-01-10 04:59:37,971 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44e0f238/06ad11c0b91c43ea8513b6db82e54336
[2022-01-10 04:59:37,974 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 04:59:37,975 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 04:59:37,978 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 04:59:37,978 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 04:59:37,981 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 04:59:37,981 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:59:37" (1/1) ...
[2022-01-10 04:59:37,982 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d96663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:37, skipping insertion in model container
[2022-01-10 04:59:37,982 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:59:37" (1/1) ...
[2022-01-10 04:59:37,986 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 04:59:38,028 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 04:59:38,175 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c[4971,4984]
[2022-01-10 04:59:38,333 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 04:59:38,341 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 04:59:38,356 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c[4971,4984]
[2022-01-10 04:59:38,444 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 04:59:38,465 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 04:59:38,465 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38 WrapperNode
[2022-01-10 04:59:38,465 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 04:59:38,466 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 04:59:38,466 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 04:59:38,466 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 04:59:38,471 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (1/1) ...
[2022-01-10 04:59:38,489 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (1/1) ...
[2022-01-10 04:59:38,544 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997
[2022-01-10 04:59:38,544 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 04:59:38,545 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 04:59:38,545 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 04:59:38,545 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 04:59:38,551 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (1/1) ...
[2022-01-10 04:59:38,551 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (1/1) ...
[2022-01-10 04:59:38,557 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (1/1) ...
[2022-01-10 04:59:38,557 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (1/1) ...
[2022-01-10 04:59:38,583 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (1/1) ...
[2022-01-10 04:59:38,590 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (1/1) ...
[2022-01-10 04:59:38,597 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (1/1) ...
[2022-01-10 04:59:38,605 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 04:59:38,606 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 04:59:38,606 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 04:59:38,606 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 04:59:38,607 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (1/1) ...
[2022-01-10 04:59:38,612 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 04:59:38,618 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 04:59:38,628 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 04:59:38,642 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 04:59:38,664 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 04:59:38,664 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 04:59:38,664 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 04:59:38,664 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 04:59:38,716 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 04:59:38,718 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 04:59:44,459 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 04:59:44,466 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 04:59:44,466 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 04:59:44,468 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:59:44 BoogieIcfgContainer
[2022-01-10 04:59:44,468 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 04:59:44,469 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 04:59:44,469 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 04:59:44,471 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 04:59:44,472 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:59:37" (1/3) ...
[2022-01-10 04:59:44,472 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce6d24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:59:44, skipping insertion in model container
[2022-01-10 04:59:44,472 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:38" (2/3) ...
[2022-01-10 04:59:44,472 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce6d24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:59:44, skipping insertion in model container
[2022-01-10 04:59:44,472 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:59:44" (3/3) ...
[2022-01-10 04:59:44,473 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem11_label18.c
[2022-01-10 04:59:44,476 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 04:59:44,477 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 04:59:44,511 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 04:59:44,516 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 04:59:44,516 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 04:59:44,535 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 04:59:44,539 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-01-10 04:59:44,540 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:59:44,540 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 04:59:44,541 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:59:44,544 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:59:44,544 INFO  L85        PathProgramCache]: Analyzing trace with hash 1089129850, now seen corresponding path program 1 times
[2022-01-10 04:59:44,552 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:59:44,553 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718201606]
[2022-01-10 04:59:44,553 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:59:44,553 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:59:44,554 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:59:44,555 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 04:59:44,556 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 04:59:44,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:59:44,605 INFO  L263         TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 04:59:44,608 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:59:44,800 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 04:59:44,800 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:59:44,801 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:59:44,801 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718201606]
[2022-01-10 04:59:44,801 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [718201606] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:59:44,801 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:59:44,801 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 04:59:44,803 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324770306]
[2022-01-10 04:59:44,803 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:59:44,807 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 04:59:44,808 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:59:44,831 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 04:59:44,832 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:59:44,834 INFO  L87              Difference]: Start difference. First operand  has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 04:59:51,502 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:59:51,502 INFO  L93              Difference]: Finished difference Result 764 states and 1354 transitions.
[2022-01-10 04:59:51,510 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 04:59:51,511 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 34
[2022-01-10 04:59:51,511 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:59:51,520 INFO  L225             Difference]: With dead ends: 764
[2022-01-10 04:59:51,520 INFO  L226             Difference]: Without dead ends: 417
[2022-01-10 04:59:51,523 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 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 04:59:51,525 INFO  L933         BasicCegarLoop]: 170 mSDtfsCounter, 183 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2022-01-10 04:59:51,526 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 193 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2022-01-10 04:59:51,540 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 417 states.
[2022-01-10 04:59:51,580 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 408.
[2022-01-10 04:59:51,582 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 408 states, 407 states have (on average 1.484029484029484) internal successors, (604), 407 states have internal predecessors, (604), 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 04:59:51,583 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 604 transitions.
[2022-01-10 04:59:51,584 INFO  L78                 Accepts]: Start accepts. Automaton has 408 states and 604 transitions. Word has length 34
[2022-01-10 04:59:51,584 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:59:51,584 INFO  L470      AbstractCegarLoop]: Abstraction has 408 states and 604 transitions.
[2022-01-10 04:59:51,585 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 04:59:51,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 408 states and 604 transitions.
[2022-01-10 04:59:51,590 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2022-01-10 04:59:51,590 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:59:51,591 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 04:59:51,597 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 04:59:51,797 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 04:59:51,797 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:59:51,800 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:59:51,800 INFO  L85        PathProgramCache]: Analyzing trace with hash -822409289, now seen corresponding path program 1 times
[2022-01-10 04:59:51,801 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:59:51,801 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146211313]
[2022-01-10 04:59:51,801 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:59:51,801 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:59:51,802 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:59:51,802 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 04:59:51,803 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 04:59:51,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:59:51,887 INFO  L263         TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-01-10 04:59:51,889 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:59:52,379 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:59:52,379 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:59:52,379 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:59:52,379 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146211313]
[2022-01-10 04:59:52,379 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146211313] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:59:52,380 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:59:52,380 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 04:59:52,380 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580467368]
[2022-01-10 04:59:52,380 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:59:52,381 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 04:59:52,381 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:59:52,381 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 04:59:52,381 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:59:52,382 INFO  L87              Difference]: Start difference. First operand 408 states and 604 transitions. Second operand  has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 04:59:57,843 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:59:57,843 INFO  L93              Difference]: Finished difference Result 1001 states and 1456 transitions.
[2022-01-10 04:59:57,850 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 04:59:57,851 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 100
[2022-01-10 04:59:57,851 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:59:57,855 INFO  L225             Difference]: With dead ends: 1001
[2022-01-10 04:59:57,855 INFO  L226             Difference]: Without dead ends: 595
[2022-01-10 04:59:57,857 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 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 04:59:57,857 INFO  L933         BasicCegarLoop]: 154 mSDtfsCounter, 123 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2022-01-10 04:59:57,858 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 175 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2022-01-10 04:59:57,859 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 595 states.
[2022-01-10 04:59:57,871 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 592.
[2022-01-10 04:59:57,871 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 592 states, 591 states have (on average 1.3637901861252115) internal successors, (806), 591 states have internal predecessors, (806), 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 04:59:57,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 806 transitions.
[2022-01-10 04:59:57,873 INFO  L78                 Accepts]: Start accepts. Automaton has 592 states and 806 transitions. Word has length 100
[2022-01-10 04:59:57,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:59:57,873 INFO  L470      AbstractCegarLoop]: Abstraction has 592 states and 806 transitions.
[2022-01-10 04:59:57,873 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 04:59:57,873 INFO  L276                IsEmpty]: Start isEmpty. Operand 592 states and 806 transitions.
[2022-01-10 04:59:57,874 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2022-01-10 04:59:57,874 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:59:57,875 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 04:59:57,882 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 04:59:58,084 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 04:59:58,085 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:59:58,085 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:59:58,085 INFO  L85        PathProgramCache]: Analyzing trace with hash -2101330289, now seen corresponding path program 1 times
[2022-01-10 04:59:58,086 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:59:58,086 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415173816]
[2022-01-10 04:59:58,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:59:58,086 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:59:58,087 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:59:58,087 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 04:59:58,089 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 04:59:58,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:59:58,164 INFO  L263         TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 04:59:58,168 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:59:58,380 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:59:58,381 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:59:58,381 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:59:58,381 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415173816]
[2022-01-10 04:59:58,381 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [415173816] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:59:58,381 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:59:58,381 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 04:59:58,381 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103675359]
[2022-01-10 04:59:58,381 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:59:58,382 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 04:59:58,382 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:59:58,382 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 04:59:58,382 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:59:58,383 INFO  L87              Difference]: Start difference. First operand 592 states and 806 transitions. Second operand  has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 05:00:05,268 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:00:05,269 INFO  L93              Difference]: Finished difference Result 1556 states and 2168 transitions.
[2022-01-10 05:00:05,276 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:00:05,276 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 105
[2022-01-10 05:00:05,277 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:00:05,279 INFO  L225             Difference]: With dead ends: 1556
[2022-01-10 05:00:05,279 INFO  L226             Difference]: Without dead ends: 966
[2022-01-10 05:00:05,280 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 05:00:05,281 INFO  L933         BasicCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2022-01-10 05:00:05,281 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2022-01-10 05:00:05,282 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 966 states.
[2022-01-10 05:00:05,306 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966.
[2022-01-10 05:00:05,307 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 966 states, 965 states have (on average 1.2870466321243523) internal successors, (1242), 965 states have internal predecessors, (1242), 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 05:00:05,309 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1242 transitions.
[2022-01-10 05:00:05,310 INFO  L78                 Accepts]: Start accepts. Automaton has 966 states and 1242 transitions. Word has length 105
[2022-01-10 05:00:05,310 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:00:05,310 INFO  L470      AbstractCegarLoop]: Abstraction has 966 states and 1242 transitions.
[2022-01-10 05:00:05,310 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 05:00:05,310 INFO  L276                IsEmpty]: Start isEmpty. Operand 966 states and 1242 transitions.
[2022-01-10 05:00:05,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2022-01-10 05:00:05,313 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:00:05,313 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 05:00:05,324 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 05:00:05,514 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 05:00:05,514 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:00:05,515 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:00:05,515 INFO  L85        PathProgramCache]: Analyzing trace with hash 2025055279, now seen corresponding path program 1 times
[2022-01-10 05:00:05,516 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:00:05,516 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994684415]
[2022-01-10 05:00:05,516 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:00:05,516 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:00:05,516 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:00:05,518 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 05:00:05,521 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 05:00:05,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:00:05,591 INFO  L263         TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:00:05,593 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:00:05,809 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:00:05,809 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:00:05,810 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:00:05,810 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994684415]
[2022-01-10 05:00:05,810 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994684415] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:00:05,810 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:00:05,810 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 05:00:05,810 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978166358]
[2022-01-10 05:00:05,810 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:00:05,811 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:00:05,811 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:00:05,811 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:00:05,811 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:00:05,811 INFO  L87              Difference]: Start difference. First operand 966 states and 1242 transitions. Second operand  has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 05:00:13,312 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:00:13,313 INFO  L93              Difference]: Finished difference Result 2130 states and 2853 transitions.
[2022-01-10 05:00:13,318 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:00:13,318 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161
[2022-01-10 05:00:13,319 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:00:13,323 INFO  L225             Difference]: With dead ends: 2130
[2022-01-10 05:00:13,323 INFO  L226             Difference]: Without dead ends: 1350
[2022-01-10 05:00:13,324 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 05:00:13,325 INFO  L933         BasicCegarLoop]: 316 mSDtfsCounter, 171 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2022-01-10 05:00:13,325 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 337 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2022-01-10 05:00:13,326 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1350 states.
[2022-01-10 05:00:13,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1342.
[2022-01-10 05:00:13,342 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1342 states, 1341 states have (on average 1.2647278150633856) internal successors, (1696), 1341 states have internal predecessors, (1696), 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 05:00:13,345 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1696 transitions.
[2022-01-10 05:00:13,345 INFO  L78                 Accepts]: Start accepts. Automaton has 1342 states and 1696 transitions. Word has length 161
[2022-01-10 05:00:13,346 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:00:13,347 INFO  L470      AbstractCegarLoop]: Abstraction has 1342 states and 1696 transitions.
[2022-01-10 05:00:13,347 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 05:00:13,347 INFO  L276                IsEmpty]: Start isEmpty. Operand 1342 states and 1696 transitions.
[2022-01-10 05:00:13,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2022-01-10 05:00:13,351 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:00:13,351 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 05:00:13,362 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 05:00:13,558 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 05:00:13,558 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:00:13,559 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:00:13,559 INFO  L85        PathProgramCache]: Analyzing trace with hash -1062578312, now seen corresponding path program 1 times
[2022-01-10 05:00:13,560 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:00:13,560 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975391936]
[2022-01-10 05:00:13,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:00:13,560 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:00:13,561 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:00:13,561 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 05:00:13,562 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 05:00:13,689 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:00:13,702 INFO  L263         TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-01-10 05:00:13,706 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:00:15,013 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 63 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:00:15,013 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 05:00:17,893 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:00:17,893 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:00:17,893 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975391936]
[2022-01-10 05:00:17,893 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [975391936] provided 1 perfect and 1 imperfect interpolant sequences
[2022-01-10 05:00:17,893 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-10 05:00:17,894 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2022-01-10 05:00:17,894 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869288466]
[2022-01-10 05:00:17,894 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:00:17,894 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:00:17,894 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:00:17,895 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:00:17,895 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 05:00:17,895 INFO  L87              Difference]: Start difference. First operand 1342 states and 1696 transitions. Second operand  has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 05:00:41,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:00:41,033 INFO  L93              Difference]: Finished difference Result 2309 states and 3082 transitions.
[2022-01-10 05:00:41,039 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:00:41,040 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 215
[2022-01-10 05:00:41,040 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:00:41,044 INFO  L225             Difference]: With dead ends: 2309
[2022-01-10 05:00:41,045 INFO  L226             Difference]: Without dead ends: 1711
[2022-01-10 05:00:41,046 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 05:00:41,048 INFO  L933         BasicCegarLoop]: 31 mSDtfsCounter, 152 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time
[2022-01-10 05:00:41,048 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 38 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time]
[2022-01-10 05:00:41,051 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1711 states.
[2022-01-10 05:00:41,068 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1711.
[2022-01-10 05:00:41,070 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1711 states, 1710 states have (on average 1.2923976608187135) internal successors, (2210), 1710 states have internal predecessors, (2210), 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 05:00:41,073 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2210 transitions.
[2022-01-10 05:00:41,073 INFO  L78                 Accepts]: Start accepts. Automaton has 1711 states and 2210 transitions. Word has length 215
[2022-01-10 05:00:41,073 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:00:41,073 INFO  L470      AbstractCegarLoop]: Abstraction has 1711 states and 2210 transitions.
[2022-01-10 05:00:41,073 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 05:00:41,073 INFO  L276                IsEmpty]: Start isEmpty. Operand 1711 states and 2210 transitions.
[2022-01-10 05:00:41,075 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 227
[2022-01-10 05:00:41,075 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:00:41,075 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 05:00:41,087 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2022-01-10 05:00:41,285 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:00:41,286 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:00:41,288 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:00:41,288 INFO  L85        PathProgramCache]: Analyzing trace with hash -667252080, now seen corresponding path program 1 times
[2022-01-10 05:00:41,289 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:00:41,289 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448240002]
[2022-01-10 05:00:41,289 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:00:41,289 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:00:41,289 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:00:41,290 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:00:41,292 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2022-01-10 05:00:41,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:00:41,394 INFO  L263         TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 05:00:41,398 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:00:44,391 INFO  L134       CoverageAnalysis]: Checked inductivity of 142 backedges. 42 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:00:44,392 INFO  L328         TraceCheckSpWp]: Computing backward predicates...