/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/array-examples/standard_init2_ground-1.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 03:38:14,011 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 03:38:14,013 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 03:38:14,064 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 03:38:14,064 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 03:38:14,066 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 03:38:14,068 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 03:38:14,071 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 03:38:14,074 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 03:38:14,075 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 03:38:14,075 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 03:38:14,077 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 03:38:14,078 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 03:38:14,080 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 03:38:14,080 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 03:38:14,081 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 03:38:14,082 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 03:38:14,086 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 03:38:14,087 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 03:38:14,088 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 03:38:14,089 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 03:38:14,089 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 03:38:14,094 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 03:38:14,094 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 03:38:14,095 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 03:38:14,095 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 03:38:14,096 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 03:38:14,096 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 03:38:14,096 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 03:38:14,097 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 03:38:14,098 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 03:38:14,098 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 03:38:14,101 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 03:38:14,101 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 03:38:14,102 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 03:38:14,102 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 03:38:14,102 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 03:38:14,103 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 03:38:14,103 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 03:38:14,104 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 03:38:14,127 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 03:38:14,127 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 03:38:14,127 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 03:38:14,127 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 03:38:14,128 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 03:38:14,128 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 03:38:14,128 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 03:38:14,128 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 03:38:14,128 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 03:38:14,129 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 03:38:14,129 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 03:38:14,129 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 03:38:14,129 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 03:38:14,130 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 03:38:14,130 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 03:38:14,130 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 03:38:14,130 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 03:38:14,130 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 03:38:14,130 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 03:38:14,130 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 03:38:14,130 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 03:38:14,130 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 03:38:14,130 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 03:38:14,130 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:38:14,131 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 03:38:14,131 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 03:38:14,131 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 03:38:14,132 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 03:38:14,132 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 03:38:14,132 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 03:38:14,132 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 03:38:14,132 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 03:38:14,132 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 03:38:14,132 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 03:38:14,411 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 03:38:14,427 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 03:38:14,428 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 03:38:14,429 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 03:38:14,430 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 03:38:14,430 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init2_ground-1.i
[2022-01-10 03:38:14,488 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c558eb21/14fd6e3ed70042539a995e93465c5d11/FLAGc8a968b25
[2022-01-10 03:38:14,850 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 03:38:14,850 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init2_ground-1.i
[2022-01-10 03:38:14,854 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c558eb21/14fd6e3ed70042539a995e93465c5d11/FLAGc8a968b25
[2022-01-10 03:38:15,298 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c558eb21/14fd6e3ed70042539a995e93465c5d11
[2022-01-10 03:38:15,300 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 03:38:15,301 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 03:38:15,312 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 03:38:15,313 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 03:38:15,315 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 03:38:15,324 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,324 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc4cd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15, skipping insertion in model container
[2022-01-10 03:38:15,325 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,329 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 03:38:15,337 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 03:38:15,446 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init2_ground-1.i[816,829]
[2022-01-10 03:38:15,454 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:38:15,459 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 03:38:15,467 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init2_ground-1.i[816,829]
[2022-01-10 03:38:15,470 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:38:15,479 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 03:38:15,480 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15 WrapperNode
[2022-01-10 03:38:15,480 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 03:38:15,480 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 03:38:15,481 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 03:38:15,481 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 03:38:15,485 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,494 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,504 INFO  L137                Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47
[2022-01-10 03:38:15,505 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 03:38:15,506 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 03:38:15,506 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 03:38:15,506 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 03:38:15,511 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,511 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,522 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,523 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,533 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,535 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,536 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,537 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 03:38:15,540 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 03:38:15,540 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 03:38:15,540 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 03:38:15,541 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (1/1) ...
[2022-01-10 03:38:15,546 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:38:15,556 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 03:38:15,569 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 03:38:15,574 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 03:38:15,601 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 03:38:15,601 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 03:38:15,601 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-10 03:38:15,601 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 03:38:15,601 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 03:38:15,601 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 03:38:15,602 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 03:38:15,602 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-10 03:38:15,641 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 03:38:15,642 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 03:38:15,724 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 03:38:15,727 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 03:38:15,728 INFO  L299             CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-10 03:38:15,729 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:38:15 BoogieIcfgContainer
[2022-01-10 03:38:15,729 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 03:38:15,731 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 03:38:15,731 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 03:38:15,734 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 03:38:15,734 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:38:15" (1/3) ...
[2022-01-10 03:38:15,734 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493b0f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:38:15, skipping insertion in model container
[2022-01-10 03:38:15,734 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:38:15" (2/3) ...
[2022-01-10 03:38:15,740 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493b0f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:38:15, skipping insertion in model container
[2022-01-10 03:38:15,740 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:38:15" (3/3) ...
[2022-01-10 03:38:15,742 INFO  L111   eAbstractionObserver]: Analyzing ICFG standard_init2_ground-1.i
[2022-01-10 03:38:15,745 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 03:38:15,745 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 03:38:15,787 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 03:38:15,792 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 03:38:15,792 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 03:38:15,801 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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 03:38:15,804 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-01-10 03:38:15,804 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:38:15,804 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:38:15,805 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:38:15,808 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:38:15,809 INFO  L85        PathProgramCache]: Analyzing trace with hash -1157636873, now seen corresponding path program 1 times
[2022-01-10 03:38:15,816 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:38:15,817 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122218833]
[2022-01-10 03:38:15,817 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:38:15,817 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:38:15,818 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:38:15,819 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 03:38:15,883 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 03:38:15,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:38:15,922 INFO  L263         TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 03:38:15,924 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:38:15,983 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 03:38:15,983 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 03:38:15,983 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:38:15,984 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122218833]
[2022-01-10 03:38:15,985 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [122218833] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 03:38:15,985 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 03:38:15,985 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 03:38:15,986 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055867064]
[2022-01-10 03:38:15,987 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:38:15,990 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 03:38:15,992 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:38:16,017 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 03:38:16,017 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 03:38:16,019 INFO  L87              Difference]: Start difference. First operand  has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 03:38:16,044 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:38:16,045 INFO  L93              Difference]: Finished difference Result 31 states and 45 transitions.
[2022-01-10 03:38:16,046 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 03:38:16,047 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9
[2022-01-10 03:38:16,047 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:38:16,058 INFO  L225             Difference]: With dead ends: 31
[2022-01-10 03:38:16,058 INFO  L226             Difference]: Without dead ends: 14
[2022-01-10 03:38:16,061 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 03:38:16,064 INFO  L933         BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 03:38:16,065 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 03:38:16,075 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2022-01-10 03:38:16,091 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2022-01-10 03:38:16,092 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 03:38:16,092 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions.
[2022-01-10 03:38:16,093 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9
[2022-01-10 03:38:16,093 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:38:16,093 INFO  L470      AbstractCegarLoop]: Abstraction has 14 states and 16 transitions.
[2022-01-10 03:38:16,094 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 03:38:16,094 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions.
[2022-01-10 03:38:16,094 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 03:38:16,094 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:38:16,094 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:38:16,119 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0
[2022-01-10 03:38:16,302 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 03:38:16,303 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:38:16,305 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:38:16,305 INFO  L85        PathProgramCache]: Analyzing trace with hash 970257334, now seen corresponding path program 1 times
[2022-01-10 03:38:16,306 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:38:16,306 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558699247]
[2022-01-10 03:38:16,306 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:38:16,306 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:38:16,306 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:38:16,309 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 03:38:16,319 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 03:38:16,356 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:38:16,357 INFO  L263         TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-01-10 03:38:16,358 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:38:16,386 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 03:38:16,386 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:38:16,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 03:38:16,422 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:38:16,422 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558699247]
[2022-01-10 03:38:16,423 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [558699247] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 03:38:16,423 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 03:38:16,423 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2022-01-10 03:38:16,423 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284575005]
[2022-01-10 03:38:16,423 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 03:38:16,424 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 03:38:16,424 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:38:16,425 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 03:38:16,425 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2022-01-10 03:38:16,425 INFO  L87              Difference]: Start difference. First operand 14 states and 16 transitions. Second operand  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 03:38:16,481 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:38:16,482 INFO  L93              Difference]: Finished difference Result 30 states and 39 transitions.
[2022-01-10 03:38:16,482 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 03:38:16,482 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 11
[2022-01-10 03:38:16,482 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:38:16,483 INFO  L225             Difference]: With dead ends: 30
[2022-01-10 03:38:16,483 INFO  L226             Difference]: Without dead ends: 20
[2022-01-10 03:38:16,483 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2022-01-10 03:38:16,484 INFO  L933         BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 03:38:16,484 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 03:38:16,485 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-10 03:38:16,488 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-01-10 03:38:16,488 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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 03:38:16,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions.
[2022-01-10 03:38:16,488 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11
[2022-01-10 03:38:16,489 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:38:16,489 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 22 transitions.
[2022-01-10 03:38:16,489 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 03:38:16,489 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions.
[2022-01-10 03:38:16,489 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-10 03:38:16,489 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:38:16,490 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:38:16,497 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0
[2022-01-10 03:38:16,698 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 03:38:16,698 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:38:16,699 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:38:16,699 INFO  L85        PathProgramCache]: Analyzing trace with hash -57021897, now seen corresponding path program 2 times
[2022-01-10 03:38:16,699 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:38:16,700 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727041122]
[2022-01-10 03:38:16,700 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 03:38:16,700 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:38:16,700 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:38:16,704 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 03:38:16,712 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 03:38:16,766 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 03:38:16,766 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 03:38:16,768 INFO  L263         TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 03:38:16,770 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:38:16,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2022-01-10 03:38:16,835 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:38:16,947 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2022-01-10 03:38:16,948 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:38:16,948 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727041122]
[2022-01-10 03:38:16,948 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727041122] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 03:38:16,949 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 03:38:16,949 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2022-01-10 03:38:16,951 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033621878]
[2022-01-10 03:38:16,951 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 03:38:16,952 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-01-10 03:38:16,952 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:38:16,953 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-01-10 03:38:16,954 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2022-01-10 03:38:16,954 INFO  L87              Difference]: Start difference. First operand 20 states and 22 transitions. Second operand  has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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 03:38:17,248 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:38:17,248 INFO  L93              Difference]: Finished difference Result 45 states and 60 transitions.
[2022-01-10 03:38:17,248 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-01-10 03:38:17,248 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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 17
[2022-01-10 03:38:17,249 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:38:17,249 INFO  L225             Difference]: With dead ends: 45
[2022-01-10 03:38:17,249 INFO  L226             Difference]: Without dead ends: 32
[2022-01-10 03:38:17,249 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240
[2022-01-10 03:38:17,250 INFO  L933         BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-10 03:38:17,250 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-10 03:38:17,251 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2022-01-10 03:38:17,255 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2022-01-10 03:38:17,255 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 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 03:38:17,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions.
[2022-01-10 03:38:17,260 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 17
[2022-01-10 03:38:17,260 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:38:17,260 INFO  L470      AbstractCegarLoop]: Abstraction has 32 states and 34 transitions.
[2022-01-10 03:38:17,260 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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 03:38:17,260 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions.
[2022-01-10 03:38:17,261 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-10 03:38:17,261 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:38:17,261 INFO  L514         BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:38:17,268 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0
[2022-01-10 03:38:17,470 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 03:38:17,471 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:38:17,471 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:38:17,471 INFO  L85        PathProgramCache]: Analyzing trace with hash 163359255, now seen corresponding path program 3 times
[2022-01-10 03:38:17,472 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:38:17,473 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726493070]
[2022-01-10 03:38:17,473 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 03:38:17,473 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:38:17,473 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:38:17,474 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 03:38:17,495 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 03:38:17,614 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2022-01-10 03:38:17,614 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 03:38:17,622 INFO  L263         TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-01-10 03:38:17,623 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:38:17,743 INFO  L134       CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2022-01-10 03:38:17,743 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:38:18,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2022-01-10 03:38:18,048 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:38:18,048 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726493070]
[2022-01-10 03:38:18,048 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [726493070] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 03:38:18,048 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 03:38:18,048 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24
[2022-01-10 03:38:18,048 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794975526]
[2022-01-10 03:38:18,048 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 03:38:18,049 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-01-10 03:38:18,049 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:38:18,049 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-01-10 03:38:18,049 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552
[2022-01-10 03:38:18,049 INFO  L87              Difference]: Start difference. First operand 32 states and 34 transitions. Second operand  has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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 03:38:19,046 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:38:19,046 INFO  L93              Difference]: Finished difference Result 75 states and 102 transitions.
[2022-01-10 03:38:19,046 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2022-01-10 03:38:19,047 INFO  L78                 Accepts]: Start accepts. Automaton has  has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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 29
[2022-01-10 03:38:19,047 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:38:19,047 INFO  L225             Difference]: With dead ends: 75
[2022-01-10 03:38:19,047 INFO  L226             Difference]: Without dead ends: 56
[2022-01-10 03:38:19,048 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122
[2022-01-10 03:38:19,049 INFO  L933         BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-10 03:38:19,049 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-10 03:38:19,049 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2022-01-10 03:38:19,054 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2022-01-10 03:38:19,054 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 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 03:38:19,055 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions.
[2022-01-10 03:38:19,055 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 29
[2022-01-10 03:38:19,055 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:38:19,055 INFO  L470      AbstractCegarLoop]: Abstraction has 56 states and 58 transitions.
[2022-01-10 03:38:19,055 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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 03:38:19,055 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions.
[2022-01-10 03:38:19,056 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2022-01-10 03:38:19,056 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:38:19,056 INFO  L514         BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:38:19,087 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2022-01-10 03:38:19,264 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:38:19,264 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:38:19,264 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:38:19,264 INFO  L85        PathProgramCache]: Analyzing trace with hash 1745445335, now seen corresponding path program 4 times
[2022-01-10 03:38:19,265 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:38:19,265 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871511490]
[2022-01-10 03:38:19,265 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-01-10 03:38:19,265 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:38:19,265 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:38:19,266 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:38:19,267 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2022-01-10 03:38:19,418 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-01-10 03:38:19,418 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 03:38:19,429 INFO  L263         TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 24 conjunts are in the unsatisfiable core
[2022-01-10 03:38:19,432 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:38:19,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked.
[2022-01-10 03:38:19,738 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:38:20,872 INFO  L134       CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked.
[2022-01-10 03:38:20,872 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:38:20,872 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871511490]
[2022-01-10 03:38:20,872 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871511490] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 03:38:20,872 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 03:38:20,872 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48
[2022-01-10 03:38:20,873 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378129041]
[2022-01-10 03:38:20,873 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 03:38:20,873 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2022-01-10 03:38:20,873 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:38:20,873 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2022-01-10 03:38:20,874 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256
[2022-01-10 03:38:20,874 INFO  L87              Difference]: Start difference. First operand 56 states and 58 transitions. Second operand  has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 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 03:38:27,244 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:38:27,244 INFO  L93              Difference]: Finished difference Result 135 states and 186 transitions.
[2022-01-10 03:38:27,245 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. 
[2022-01-10 03:38:27,246 INFO  L78                 Accepts]: Start accepts. Automaton has  has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 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 53
[2022-01-10 03:38:27,246 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:38:27,246 INFO  L225             Difference]: With dead ends: 135
[2022-01-10 03:38:27,246 INFO  L226             Difference]: Without dead ends: 104
[2022-01-10 03:38:27,248 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830
[2022-01-10 03:38:27,248 INFO  L933         BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2022-01-10 03:38:27,249 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2022-01-10 03:38:27,249 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2022-01-10 03:38:27,275 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2022-01-10 03:38:27,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 104 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 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 03:38:27,282 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions.
[2022-01-10 03:38:27,282 INFO  L78                 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 53
[2022-01-10 03:38:27,282 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:38:27,282 INFO  L470      AbstractCegarLoop]: Abstraction has 104 states and 106 transitions.
[2022-01-10 03:38:27,282 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 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 03:38:27,282 INFO  L276                IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions.
[2022-01-10 03:38:27,285 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2022-01-10 03:38:27,285 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:38:27,285 INFO  L514         BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:38:27,307 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 03:38:27,493 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 03:38:27,494 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:38:27,494 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:38:27,494 INFO  L85        PathProgramCache]: Analyzing trace with hash 1914155351, now seen corresponding path program 5 times
[2022-01-10 03:38:27,495 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:38:27,495 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426535539]
[2022-01-10 03:38:27,495 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-01-10 03:38:27,495 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:38:27,495 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:38:27,496 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 03:38:27,497 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 03:38:28,889 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s)
[2022-01-10 03:38:28,889 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 03:38:28,915 INFO  L263         TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 49 conjunts are in the unsatisfiable core
[2022-01-10 03:38:28,927 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:38:29,822 INFO  L134       CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked.
[2022-01-10 03:38:29,822 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:38:35,725 INFO  L134       CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked.
[2022-01-10 03:38:35,725 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:38:35,725 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426535539]
[2022-01-10 03:38:35,725 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426535539] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 03:38:35,725 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 03:38:35,726 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 96
[2022-01-10 03:38:35,726 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286686938]
[2022-01-10 03:38:35,726 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 03:38:35,726 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 96 states
[2022-01-10 03:38:35,726 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:38:35,727 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants.
[2022-01-10 03:38:35,729 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120
[2022-01-10 03:38:35,729 INFO  L87              Difference]: Start difference. First operand 104 states and 106 transitions. Second operand  has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 96 states have internal predecessors, (104), 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 03:39:25,009 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:39:25,009 INFO  L93              Difference]: Finished difference Result 255 states and 354 transitions.
[2022-01-10 03:39:25,012 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. 
[2022-01-10 03:39:25,013 INFO  L78                 Accepts]: Start accepts. Automaton has  has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 96 states have internal predecessors, (104), 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 101
[2022-01-10 03:39:25,013 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:39:25,014 INFO  L225             Difference]: With dead ends: 255
[2022-01-10 03:39:25,014 INFO  L226             Difference]: Without dead ends: 200
[2022-01-10 03:39:25,017 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 51.0s TimeCoverageRelationStatistics Valid=6910, Invalid=13396, Unknown=0, NotChecked=0, Total=20306
[2022-01-10 03:39:25,018 INFO  L933         BasicCegarLoop]: 12 mSDtfsCounter, 322 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4614 mSolverCounterSat, 2244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 6858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2244 IncrementalHoareTripleChecker+Valid, 4614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-01-10 03:39:25,018 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 90 Invalid, 6858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2244 Valid, 4614 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2022-01-10 03:39:25,018 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 200 states.
[2022-01-10 03:39:25,034 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200.
[2022-01-10 03:39:25,034 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 200 states, 199 states have (on average 1.015075376884422) internal successors, (202), 199 states have internal predecessors, (202), 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 03:39:25,035 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions.
[2022-01-10 03:39:25,035 INFO  L78                 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 101
[2022-01-10 03:39:25,035 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:39:25,035 INFO  L470      AbstractCegarLoop]: Abstraction has 200 states and 202 transitions.
[2022-01-10 03:39:25,035 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 96 states have internal predecessors, (104), 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 03:39:25,035 INFO  L276                IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions.
[2022-01-10 03:39:25,037 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2022-01-10 03:39:25,037 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:39:25,037 INFO  L514         BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:39:25,054 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0
[2022-01-10 03:39:25,238 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:39:25,239 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:39:25,239 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:39:25,239 INFO  L85        PathProgramCache]: Analyzing trace with hash -1966616489, now seen corresponding path program 6 times
[2022-01-10 03:39:25,240 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:39:25,240 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802326637]
[2022-01-10 03:39:25,240 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-01-10 03:39:25,240 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:39:25,240 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:39:25,246 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:39:25,251 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2022-01-10 03:39:32,602 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s)
[2022-01-10 03:39:32,603 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 03:39:32,655 INFO  L263         TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 97 conjunts are in the unsatisfiable core
[2022-01-10 03:39:32,660 INFO  L286         TraceCheckSpWp]: Computing forward predicates...