/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 03:15:52,529 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 03:15:52,530 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 03:15:52,584 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 03:15:52,585 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 03:15:52,586 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 03:15:52,587 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 03:15:52,588 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 03:15:52,590 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 03:15:52,590 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 03:15:52,592 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 03:15:52,592 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 03:15:52,593 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 03:15:52,594 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 03:15:52,597 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 03:15:52,597 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 03:15:52,599 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 03:15:52,600 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 03:15:52,602 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 03:15:52,603 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 03:15:52,608 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 03:15:52,611 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 03:15:52,612 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 03:15:52,616 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 03:15:52,617 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 03:15:52,617 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 03:15:52,618 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 03:15:52,618 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 03:15:52,619 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 03:15:52,619 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 03:15:52,619 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 03:15:52,620 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 03:15:52,621 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 03:15:52,621 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 03:15:52,622 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 03:15:52,622 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 03:15:52,622 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 03:15:52,622 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 03:15:52,623 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 03:15:52,624 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 03:15:52,630 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2022-01-10 03:15:52,659 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 03:15:52,659 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 03:15:52,659 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 03:15:52,660 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 03:15:52,660 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 03:15:52,660 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 03:15:52,661 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 03:15:52,661 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 03:15:52,661 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 03:15:52,661 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 03:15:52,662 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 03:15:52,662 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 03:15:52,662 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 03:15:52,662 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 03:15:52,662 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 03:15:52,663 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 03:15:52,663 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 03:15:52,663 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 03:15:52,663 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 03:15:52,663 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 03:15:52,663 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 03:15:52,663 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 03:15:52,663 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 03:15:52,664 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:15:52,665 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 03:15:52,665 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 03:15:52,665 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 03:15:52,665 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 03:15:52,665 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 03:15:52,665 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 03:15:52,665 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 03:15:52,666 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 03:15:52,666 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 03:15:52,666 INFO  L138        SettingsManager]:  * Logic for external solver=AUFBV
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 03:15:52,898 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 03:15:52,919 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 03:15:52,921 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 03:15:52,922 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 03:15:52,923 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 03:15:52,924 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c
[2022-01-10 03:15:52,972 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d51e21c/5f62fb4e21394875aa6617dd2eb35332/FLAG35da8e6fa
[2022-01-10 03:15:53,327 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 03:15:53,328 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c
[2022-01-10 03:15:53,332 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d51e21c/5f62fb4e21394875aa6617dd2eb35332/FLAG35da8e6fa
[2022-01-10 03:15:53,342 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d51e21c/5f62fb4e21394875aa6617dd2eb35332
[2022-01-10 03:15:53,344 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 03:15:53,346 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 03:15:53,351 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 03:15:53,352 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 03:15:53,355 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 03:15:53,356 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,357 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a6ef27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53, skipping insertion in model container
[2022-01-10 03:15:53,357 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,362 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 03:15:53,372 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 03:15:53,494 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c[525,538]
[2022-01-10 03:15:53,519 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:15:53,527 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 03:15:53,538 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c[525,538]
[2022-01-10 03:15:53,546 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:15:53,557 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 03:15:53,557 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53 WrapperNode
[2022-01-10 03:15:53,557 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 03:15:53,558 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 03:15:53,558 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 03:15:53,558 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 03:15:53,563 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,569 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,581 INFO  L137                Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37
[2022-01-10 03:15:53,581 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 03:15:53,582 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 03:15:53,582 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 03:15:53,582 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 03:15:53,589 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,589 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,601 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,601 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,608 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,611 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,612 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,613 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 03:15:53,614 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 03:15:53,614 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 03:15:53,614 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 03:15:53,626 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (1/1) ...
[2022-01-10 03:15:53,632 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:15:53,641 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 03:15:53,655 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 03:15:53,659 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 03:15:53,685 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 03:15:53,685 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 03:15:53,686 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-01-10 03:15:53,686 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-01-10 03:15:53,686 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 03:15:53,686 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 03:15:53,686 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-10 03:15:53,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-10 03:15:53,745 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 03:15:53,746 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 03:15:53,950 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 03:15:53,954 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 03:15:53,955 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 03:15:53,956 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:15:53 BoogieIcfgContainer
[2022-01-10 03:15:53,956 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 03:15:53,957 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 03:15:53,958 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 03:15:53,960 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 03:15:53,961 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:15:53" (1/3) ...
[2022-01-10 03:15:53,961 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e30f4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:15:53, skipping insertion in model container
[2022-01-10 03:15:53,961 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:53" (2/3) ...
[2022-01-10 03:15:53,962 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e30f4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:15:53, skipping insertion in model container
[2022-01-10 03:15:53,962 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:15:53" (3/3) ...
[2022-01-10 03:15:53,963 INFO  L111   eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound5.c
[2022-01-10 03:15:53,967 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 03:15:53,967 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 03:15:54,022 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 03:15:54,030 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 03:15:54,030 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 03:15:54,055 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 24 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 03:15:54,060 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-10 03:15:54,060 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:15:54,061 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:15:54,062 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:15:54,066 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:15:54,067 INFO  L85        PathProgramCache]: Analyzing trace with hash 1945977121, now seen corresponding path program 1 times
[2022-01-10 03:15:54,076 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:15:54,077 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904444084]
[2022-01-10 03:15:54,077 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:15:54,078 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:15:54,078 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:15:54,083 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:15:54,139 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2022-01-10 03:15:54,227 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:15:54,239 INFO  L263         TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-01-10 03:15:54,243 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:15:54,324 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 03:15:54,324 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 03:15:54,324 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:15:54,325 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904444084]
[2022-01-10 03:15:54,325 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [904444084] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 03:15:54,326 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 03:15:54,326 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 03:15:54,327 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683435958]
[2022-01-10 03:15:54,328 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:15:54,332 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 03:15:54,333 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:15:54,360 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 03:15:54,361 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 03:15:54,363 INFO  L87              Difference]: Start difference. First operand  has 24 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2022-01-10 03:15:54,381 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:15:54,382 INFO  L93              Difference]: Finished difference Result 45 states and 60 transitions.
[2022-01-10 03:15:54,383 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 03:15:54,384 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19
[2022-01-10 03:15:54,384 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:15:54,394 INFO  L225             Difference]: With dead ends: 45
[2022-01-10 03:15:54,395 INFO  L226             Difference]: Without dead ends: 20
[2022-01-10 03:15:54,398 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 03:15:54,401 INFO  L933         BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 03:15:54,402 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 03:15:54,416 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-10 03:15:54,431 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-01-10 03:15:54,433 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-10 03:15:54,435 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions.
[2022-01-10 03:15:54,436 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 19
[2022-01-10 03:15:54,436 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:15:54,436 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 22 transitions.
[2022-01-10 03:15:54,437 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2022-01-10 03:15:54,437 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions.
[2022-01-10 03:15:54,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-10 03:15:54,439 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:15:54,439 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:15:54,456 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2022-01-10 03:15:54,656 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:15:54,657 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:15:54,657 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:15:54,657 INFO  L85        PathProgramCache]: Analyzing trace with hash 1338724063, now seen corresponding path program 1 times
[2022-01-10 03:15:54,658 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:15:54,658 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562100490]
[2022-01-10 03:15:54,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:15:54,658 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:15:54,659 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:15:54,660 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:15:54,662 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2022-01-10 03:15:54,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:15:54,769 INFO  L263         TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-01-10 03:15:54,772 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:15:55,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 03:15:55,057 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:15:57,004 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-01-10 03:15:57,005 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:15:57,005 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562100490]
[2022-01-10 03:15:57,005 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [562100490] provided 1 perfect and 1 imperfect interpolant sequences
[2022-01-10 03:15:57,005 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-10 03:15:57,006 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2022-01-10 03:15:57,006 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189967683]
[2022-01-10 03:15:57,006 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:15:57,007 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 03:15:57,007 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:15:57,008 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 03:15:57,008 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2022-01-10 03:15:57,008 INFO  L87              Difference]: Start difference. First operand 20 states and 22 transitions. Second operand  has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-01-10 03:15:59,647 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:15:59,845 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:15:59,845 INFO  L93              Difference]: Finished difference Result 30 states and 33 transitions.
[2022-01-10 03:15:59,857 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 03:15:59,858 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19
[2022-01-10 03:15:59,858 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:15:59,859 INFO  L225             Difference]: With dead ends: 30
[2022-01-10 03:15:59,859 INFO  L226             Difference]: Without dead ends: 27
[2022-01-10 03:15:59,860 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2022-01-10 03:15:59,861 INFO  L933         BasicCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2022-01-10 03:15:59,861 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time]
[2022-01-10 03:15:59,862 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-01-10 03:15:59,866 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2022-01-10 03:15:59,866 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 03:15:59,867 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions.
[2022-01-10 03:15:59,867 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19
[2022-01-10 03:15:59,868 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:15:59,868 INFO  L470      AbstractCegarLoop]: Abstraction has 27 states and 29 transitions.
[2022-01-10 03:15:59,869 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-01-10 03:15:59,869 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions.
[2022-01-10 03:15:59,869 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-01-10 03:15:59,869 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:15:59,870 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:15:59,879 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2022-01-10 03:16:00,075 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:16:00,076 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:16:00,076 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:16:00,076 INFO  L85        PathProgramCache]: Analyzing trace with hash -1196071836, now seen corresponding path program 1 times
[2022-01-10 03:16:00,077 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:16:00,077 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878592427]
[2022-01-10 03:16:00,077 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:16:00,078 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:16:00,078 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:16:00,079 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:16:00,085 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2022-01-10 03:16:00,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:16:00,232 INFO  L263         TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 03:16:00,234 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:16:00,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 03:16:00,676 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:16:14,139 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-01-10 03:16:14,140 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:16:14,140 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878592427]
[2022-01-10 03:16:14,140 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [878592427] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 03:16:14,140 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 03:16:14,140 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13
[2022-01-10 03:16:14,141 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971272402]
[2022-01-10 03:16:14,141 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 03:16:14,141 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-01-10 03:16:14,141 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:16:14,142 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-01-10 03:16:14,142 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=124, Unknown=1, NotChecked=0, Total=156
[2022-01-10 03:16:14,143 INFO  L87              Difference]: Start difference. First operand 27 states and 29 transitions. Second operand  has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2022-01-10 03:16:27,323 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:16:34,935 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:16:37,071 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:16:39,210 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:16:41,290 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:16:43,323 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:16:44,052 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:16:44,052 INFO  L93              Difference]: Finished difference Result 45 states and 52 transitions.
[2022-01-10 03:16:44,069 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-01-10 03:16:44,070 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26
[2022-01-10 03:16:44,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:16:44,071 INFO  L225             Difference]: With dead ends: 45
[2022-01-10 03:16:44,071 INFO  L226             Difference]: Without dead ends: 40
[2022-01-10 03:16:44,072 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=55, Invalid=214, Unknown=3, NotChecked=0, Total=272
[2022-01-10 03:16:44,073 INFO  L933         BasicCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 24 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time
[2022-01-10 03:16:44,073 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 138 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 101 Invalid, 6 Unknown, 0 Unchecked, 17.2s Time]
[2022-01-10 03:16:44,074 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2022-01-10 03:16:44,082 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2022-01-10 03:16:44,083 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-10 03:16:44,084 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions.
[2022-01-10 03:16:44,084 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 26
[2022-01-10 03:16:44,084 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:16:44,084 INFO  L470      AbstractCegarLoop]: Abstraction has 40 states and 44 transitions.
[2022-01-10 03:16:44,084 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2022-01-10 03:16:44,085 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions.
[2022-01-10 03:16:44,086 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2022-01-10 03:16:44,086 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:16:44,086 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:16:44,105 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2022-01-10 03:16:44,302 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:16:44,303 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:16:44,303 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:16:44,303 INFO  L85        PathProgramCache]: Analyzing trace with hash 74745759, now seen corresponding path program 2 times
[2022-01-10 03:16:44,304 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:16:44,304 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415825334]
[2022-01-10 03:16:44,304 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 03:16:44,304 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:16:44,304 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:16:44,305 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:16:44,306 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2022-01-10 03:16:44,617 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 03:16:44,617 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 03:16:44,659 INFO  L263         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-01-10 03:16:44,662 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:16:58,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-01-10 03:16:58,470 INFO  L328         TraceCheckSpWp]: Computing backward predicates...