/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 15:15:58,823 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 15:15:58,825 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 15:15:58,859 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 15:15:58,859 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 15:15:58,860 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 15:15:58,861 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 15:15:58,878 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 15:15:58,879 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 15:15:58,880 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 15:15:58,881 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 15:15:58,881 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 15:15:58,882 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 15:15:58,882 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 15:15:58,883 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 15:15:58,883 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 15:15:58,884 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 15:15:58,884 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 15:15:58,885 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 15:15:58,887 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 15:15:58,889 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 15:15:58,893 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 15:15:58,895 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 15:15:58,897 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 15:15:58,908 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 15:15:58,908 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 15:15:58,908 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 15:15:58,909 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 15:15:58,909 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 15:15:58,910 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 15:15:58,910 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 15:15:58,910 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 15:15:58,911 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 15:15:58,911 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 15:15:58,912 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 15:15:58,912 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 15:15:58,912 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 15:15:58,912 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 15:15:58,913 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 15:15:58,913 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 15:15:58,913 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 15:15:58,914 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf
[2022-01-10 15:15:58,933 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 15:15:58,933 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 15:15:58,934 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 15:15:58,934 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 15:15:58,934 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 15:15:58,935 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 15:15:58,935 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 15:15:58,935 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 15:15:58,939 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 15:15:58,939 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 15:15:58,939 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 15:15:58,940 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 15:15:58,940 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 15:15:58,940 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 15:15:58,940 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 15:15:58,940 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 15:15:58,940 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 15:15:58,940 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 15:15:58,940 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 15:15:58,941 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 15:15:58,941 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 15:15:58,941 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 15:15:58,942 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 15:15:58,942 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 15:15:58,942 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 15:15:58,942 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 15:15:58,942 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 15:15:58,942 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 15:15:58,943 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 15:15:58,943 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 15:15:58,943 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 15:15:58,943 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 15:15:58,944 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 15:15:58,944 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_LAZY
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 15:15:59,132 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 15:15:59,150 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 15:15:59,151 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 15:15:59,152 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 15:15:59,154 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 15:15:59,154 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i
[2022-01-10 15:15:59,197 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d31076e7/31ddfafeea574747b527806b98c4a45c/FLAGa32d5d629
[2022-01-10 15:15:59,556 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 15:15:59,556 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i
[2022-01-10 15:15:59,563 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d31076e7/31ddfafeea574747b527806b98c4a45c/FLAGa32d5d629
[2022-01-10 15:15:59,574 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d31076e7/31ddfafeea574747b527806b98c4a45c
[2022-01-10 15:15:59,576 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 15:15:59,578 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 15:15:59,580 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 15:15:59,580 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 15:15:59,582 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 15:15:59,583 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,584 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f393ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59, skipping insertion in model container
[2022-01-10 15:15:59,584 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,588 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 15:15:59,598 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 15:15:59,764 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_copy6_ground-1.i[816,829]
[2022-01-10 15:15:59,793 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 15:15:59,800 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 15:15:59,812 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_copy6_ground-1.i[816,829]
[2022-01-10 15:15:59,838 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 15:15:59,850 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 15:15:59,850 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59 WrapperNode
[2022-01-10 15:15:59,850 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 15:15:59,852 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 15:15:59,852 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 15:15:59,852 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 15:15:59,856 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,869 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,891 INFO  L137                Inliner]: procedures = 18, calls = 44, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 145
[2022-01-10 15:15:59,892 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 15:15:59,892 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 15:15:59,892 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 15:15:59,893 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 15:15:59,898 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,898 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,902 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,902 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,917 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,920 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,921 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,922 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 15:15:59,923 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 15:15:59,923 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 15:15:59,923 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 15:15:59,928 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (1/1) ...
[2022-01-10 15:15:59,933 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 15:15:59,940 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:15:59,949 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 15:15:59,957 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 15:15:59,980 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 15:15:59,980 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 15:15:59,980 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-10 15:15:59,981 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 15:15:59,981 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 15:15:59,981 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 15:15:59,981 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 15:15:59,983 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-10 15:16:00,028 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 15:16:00,029 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 15:16:00,208 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 15:16:00,212 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 15:16:00,212 INFO  L299             CfgBuilder]: Removed 8 assume(true) statements.
[2022-01-10 15:16:00,213 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:16:00 BoogieIcfgContainer
[2022-01-10 15:16:00,213 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 15:16:00,214 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 15:16:00,214 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 15:16:00,215 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 15:16:00,217 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:16:00" (1/1) ...
[2022-01-10 15:16:00,349 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:16:00 BasicIcfg
[2022-01-10 15:16:00,349 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 15:16:00,351 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 15:16:00,351 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 15:16:00,358 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 15:16:00,358 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:15:59" (1/4) ...
[2022-01-10 15:16:00,359 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e023b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:16:00, skipping insertion in model container
[2022-01-10 15:16:00,359 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:15:59" (2/4) ...
[2022-01-10 15:16:00,359 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e023b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:16:00, skipping insertion in model container
[2022-01-10 15:16:00,359 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:16:00" (3/4) ...
[2022-01-10 15:16:00,360 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e023b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:16:00, skipping insertion in model container
[2022-01-10 15:16:00,360 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:16:00" (4/4) ...
[2022-01-10 15:16:00,360 INFO  L111   eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-1.iTransformedIcfg
[2022-01-10 15:16:00,363 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 15:16:00,363 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 15:16:00,404 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 15:16:00,410 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 15:16:00,410 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 15:16:00,420 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 33 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 32 states have internal predecessors, (49), 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 15:16:00,423 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-10 15:16:00,423 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:16:00,424 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:16:00,424 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:16:00,428 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:16:00,428 INFO  L85        PathProgramCache]: Analyzing trace with hash 1968289075, now seen corresponding path program 1 times
[2022-01-10 15:16:00,433 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:16:00,434 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652460450]
[2022-01-10 15:16:00,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:16:00,434 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:16:00,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:16:00,624 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 15:16:00,625 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:16:00,625 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652460450]
[2022-01-10 15:16:00,626 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652460450] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 15:16:00,626 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 15:16:00,626 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 15:16:00,627 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042631858]
[2022-01-10 15:16:00,628 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 15:16:00,631 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 15:16:00,632 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:16:00,648 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 15:16:00,649 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 15:16:00,650 INFO  L87              Difference]: Start difference. First operand  has 33 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 32 states have internal predecessors, (49), 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 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 15:16:00,660 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:16:00,660 INFO  L93              Difference]: Finished difference Result 62 states and 92 transitions.
[2022-01-10 15:16:00,660 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 15:16:00,661 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19
[2022-01-10 15:16:00,661 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:16:00,665 INFO  L225             Difference]: With dead ends: 62
[2022-01-10 15:16:00,666 INFO  L226             Difference]: Without dead ends: 29
[2022-01-10 15:16:00,667 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 15:16:00,669 INFO  L933         BasicCegarLoop]: 40 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, 40 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 15:16:00,670 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 15:16:00,679 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2022-01-10 15:16:00,686 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2022-01-10 15:16:00,687 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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 15:16:00,688 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions.
[2022-01-10 15:16:00,689 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 19
[2022-01-10 15:16:00,689 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:16:00,689 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 36 transitions.
[2022-01-10 15:16:00,689 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 15:16:00,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions.
[2022-01-10 15:16:00,689 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-10 15:16:00,690 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:16:00,690 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:16:00,690 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 15:16:00,690 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:16:00,691 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:16:00,691 INFO  L85        PathProgramCache]: Analyzing trace with hash 1819768954, now seen corresponding path program 1 times
[2022-01-10 15:16:00,692 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:16:00,692 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461306439]
[2022-01-10 15:16:00,692 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:16:00,692 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:16:00,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:16:00,793 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 15:16:00,794 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:16:00,794 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461306439]
[2022-01-10 15:16:00,794 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461306439] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 15:16:00,794 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 15:16:00,794 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 15:16:00,794 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493311809]
[2022-01-10 15:16:00,794 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 15:16:00,795 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 15:16:00,795 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:16:00,796 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 15:16:00,796 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 15:16:00,796 INFO  L87              Difference]: Start difference. First operand 29 states and 36 transitions. Second operand  has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 15:16:00,809 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:16:00,809 INFO  L93              Difference]: Finished difference Result 56 states and 70 transitions.
[2022-01-10 15:16:00,810 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 15:16:00,810 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19
[2022-01-10 15:16:00,810 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:16:00,810 INFO  L225             Difference]: With dead ends: 56
[2022-01-10 15:16:00,810 INFO  L226             Difference]: Without dead ends: 31
[2022-01-10 15:16:00,811 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 15:16:00,812 INFO  L933         BasicCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 15:16:00,812 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 15:16:00,813 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-01-10 15:16:00,815 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30.
[2022-01-10 15:16:00,815 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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 15:16:00,815 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions.
[2022-01-10 15:16:00,816 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 19
[2022-01-10 15:16:00,816 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:16:00,816 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 37 transitions.
[2022-01-10 15:16:00,816 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 15:16:00,816 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions.
[2022-01-10 15:16:00,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-01-10 15:16:00,817 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:16:00,817 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:16:00,817 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 15:16:00,817 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:16:00,817 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:16:00,817 INFO  L85        PathProgramCache]: Analyzing trace with hash 501617848, now seen corresponding path program 1 times
[2022-01-10 15:16:00,817 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:16:00,818 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451640686]
[2022-01-10 15:16:00,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:16:00,818 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:16:00,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:16:00,927 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 15:16:00,927 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:16:00,927 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451640686]
[2022-01-10 15:16:00,928 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451640686] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 15:16:00,928 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 15:16:00,928 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 15:16:00,928 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768528619]
[2022-01-10 15:16:00,929 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 15:16:00,929 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 15:16:00,929 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:16:00,930 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 15:16:00,930 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 15:16:00,930 INFO  L87              Difference]: Start difference. First operand 30 states and 37 transitions. Second operand  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 15:16:01,018 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:16:01,018 INFO  L93              Difference]: Finished difference Result 64 states and 82 transitions.
[2022-01-10 15:16:01,019 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 15:16:01,019 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21
[2022-01-10 15:16:01,019 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:16:01,020 INFO  L225             Difference]: With dead ends: 64
[2022-01-10 15:16:01,020 INFO  L226             Difference]: Without dead ends: 42
[2022-01-10 15:16:01,020 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 15:16:01,021 INFO  L933         BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 15:16:01,021 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 15:16:01,022 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-01-10 15:16:01,025 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36.
[2022-01-10 15:16:01,025 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 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 15:16:01,029 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions.
[2022-01-10 15:16:01,029 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 21
[2022-01-10 15:16:01,030 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:16:01,030 INFO  L470      AbstractCegarLoop]: Abstraction has 36 states and 43 transitions.
[2022-01-10 15:16:01,030 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 15:16:01,030 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions.
[2022-01-10 15:16:01,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-10 15:16:01,031 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:16:01,031 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:16:01,031 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 15:16:01,031 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:16:01,032 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:16:01,032 INFO  L85        PathProgramCache]: Analyzing trace with hash -1697491060, now seen corresponding path program 1 times
[2022-01-10 15:16:01,033 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:16:01,033 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347517338]
[2022-01-10 15:16:01,033 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:16:01,033 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:16:01,134 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:16:01,173 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 15:16:01,173 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:16:01,173 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347517338]
[2022-01-10 15:16:01,173 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347517338] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 15:16:01,173 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089558036]
[2022-01-10 15:16:01,173 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:16:01,173 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:16:01,174 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:16:01,176 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 15:16:01,195 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 15:16:01,375 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:16:01,378 INFO  L263         TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-10 15:16:01,381 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 15:16:01,587 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 15:16:01,588 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 15:16:01,662 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 15:16:01,663 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089558036] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 15:16:01,663 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 15:16:01,663 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-01-10 15:16:01,663 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703418594]
[2022-01-10 15:16:01,663 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 15:16:01,666 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 15:16:01,666 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:16:01,667 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 15:16:01,667 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 15:16:01,667 INFO  L87              Difference]: Start difference. First operand 36 states and 43 transitions. Second operand  has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 15:16:01,735 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:16:01,736 INFO  L93              Difference]: Finished difference Result 73 states and 89 transitions.
[2022-01-10 15:16:01,738 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 15:16:01,738 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 33
[2022-01-10 15:16:01,738 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:16:01,738 INFO  L225             Difference]: With dead ends: 73
[2022-01-10 15:16:01,738 INFO  L226             Difference]: Without dead ends: 42
[2022-01-10 15:16:01,739 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-01-10 15:16:01,739 INFO  L933         BasicCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 15:16:01,739 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 98 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 15:16:01,740 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-01-10 15:16:01,743 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2022-01-10 15:16:01,743 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 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 15:16:01,743 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions.
[2022-01-10 15:16:01,743 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 33
[2022-01-10 15:16:01,743 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:16:01,743 INFO  L470      AbstractCegarLoop]: Abstraction has 42 states and 49 transitions.
[2022-01-10 15:16:01,744 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 15:16:01,744 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions.
[2022-01-10 15:16:01,744 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-01-10 15:16:01,744 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:16:01,744 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:16:01,753 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-10 15:16:01,950 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:16:01,951 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:16:01,951 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:16:01,951 INFO  L85        PathProgramCache]: Analyzing trace with hash -499034042, now seen corresponding path program 2 times
[2022-01-10 15:16:01,951 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:16:01,952 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926859855]
[2022-01-10 15:16:01,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:16:01,952 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:16:02,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:16:02,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2022-01-10 15:16:02,135 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:16:02,135 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926859855]
[2022-01-10 15:16:02,135 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926859855] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 15:16:02,135 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25685280]
[2022-01-10 15:16:02,135 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 15:16:02,135 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:16:02,136 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:16:02,137 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 15:16:02,139 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 15:16:02,420 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 15:16:02,420 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 15:16:02,423 INFO  L263         TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 15:16:02,424 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 15:16:02,524 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2022-01-10 15:16:02,525 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 15:16:02,605 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2022-01-10 15:16:02,605 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [25685280] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 15:16:02,606 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 15:16:02,606 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9
[2022-01-10 15:16:02,606 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158030671]
[2022-01-10 15:16:02,606 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 15:16:02,606 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-10 15:16:02,606 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:16:02,606 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-10 15:16:02,607 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2022-01-10 15:16:02,607 INFO  L87              Difference]: Start difference. First operand 42 states and 49 transitions. Second operand  has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 15:16:02,956 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:16:02,957 INFO  L93              Difference]: Finished difference Result 105 states and 135 transitions.
[2022-01-10 15:16:02,957 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-10 15:16:02,957 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 39
[2022-01-10 15:16:02,957 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:16:02,958 INFO  L225             Difference]: With dead ends: 105
[2022-01-10 15:16:02,958 INFO  L226             Difference]: Without dead ends: 78
[2022-01-10 15:16:02,958 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-01-10 15:16:02,959 INFO  L933         BasicCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-10 15:16:02,959 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 89 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-10 15:16:02,959 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2022-01-10 15:16:02,966 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78.
[2022-01-10 15:16:02,966 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 78 states, 77 states have (on average 1.103896103896104) internal successors, (85), 77 states have internal predecessors, (85), 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 15:16:02,967 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions.
[2022-01-10 15:16:02,967 INFO  L78                 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 39
[2022-01-10 15:16:02,967 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:16:02,967 INFO  L470      AbstractCegarLoop]: Abstraction has 78 states and 85 transitions.
[2022-01-10 15:16:02,967 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 15:16:02,967 INFO  L276                IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions.
[2022-01-10 15:16:02,968 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2022-01-10 15:16:02,968 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:16:02,968 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:16:02,987 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 15:16:03,183 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:16:03,184 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:16:03,184 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:16:03,184 INFO  L85        PathProgramCache]: Analyzing trace with hash 1766737858, now seen corresponding path program 3 times
[2022-01-10 15:16:03,184 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:16:03,184 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730783336]
[2022-01-10 15:16:03,184 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:16:03,184 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:16:03,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:16:03,539 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2022-01-10 15:16:03,540 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:16:03,540 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730783336]
[2022-01-10 15:16:03,540 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730783336] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 15:16:03,540 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136118499]
[2022-01-10 15:16:03,540 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 15:16:03,540 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:16:03,540 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:16:03,541 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 15:16:03,571 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-10 15:16:17,188 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2022-01-10 15:16:17,189 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 15:16:17,230 INFO  L263         TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 113 conjunts are in the unsatisfiable core
[2022-01-10 15:16:17,234 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 15:16:17,403 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked.
[2022-01-10 15:16:17,403 INFO  L328         TraceCheckSpWp]: Computing backward predicates...