/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_NONE.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 20:26:01,892 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 20:26:01,893 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 20:26:01,930 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 20:26:01,930 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 20:26:01,936 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 20:26:01,938 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 20:26:01,942 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 20:26:01,943 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
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[2022-01-10 20:26:01,947 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 20:26:01,947 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 20:26:01,948 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 20:26:01,949 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 20:26:01,949 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 20:26:01,950 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 20:26:01,950 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 20:26:01,951 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 20:26:01,952 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 20:26:01,952 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 20:26:01,955 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 20:26:01,955 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 20:26:01,956 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 20:26:01,957 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 20:26:01,957 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 20:26:01,957 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 20:26:01,958 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 20:26:01,958 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 20:26:01,958 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 20:26:01,958 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 20:26:01,959 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 20:26:01,959 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 20:26:01,960 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 20:26:01,960 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 20:26:01,960 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 20:26:01,961 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 20:26:01,961 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 20:26:01,961 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 20:26:01,962 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 20:26:01,967 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 20:26:01,986 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 20:26:01,987 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 20:26:01,987 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 20:26:02,007 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 20:26:02,008 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 20:26:02,008 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 20:26:02,008 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 20:26:02,008 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 20:26:02,008 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 20:26:02,008 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 20:26:02,008 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 20:26:02,008 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 20:26:02,008 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 20:26:02,008 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 20:26:02,009 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 20:26:02,009 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 20:26:02,009 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 20:26:02,009 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 20:26:02,009 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 20:26:02,009 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 20:26:02,009 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 20:26:02,009 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:26:02,009 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 20:26:02,009 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 20:26:02,009 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 20:26:02,010 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 20:26:02,010 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 20:26:02,010 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 20:26:02,010 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 20:26:02,010 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 20:26:02,010 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 20:26:02,010 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 20:26:02,010 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 20:26:02,010 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 20:26:02,157 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 20:26:02,169 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 20:26:02,171 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 20:26:02,171 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 20:26:02,172 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 20:26:02,172 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max.c
[2022-01-10 20:26:02,208 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab1d8a97/9b3b39f02c804fb48ec380b4fc32da96/FLAG34b744253
[2022-01-10 20:26:02,567 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 20:26:02,567 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c
[2022-01-10 20:26:02,575 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab1d8a97/9b3b39f02c804fb48ec380b4fc32da96/FLAG34b744253
[2022-01-10 20:26:02,969 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab1d8a97/9b3b39f02c804fb48ec380b4fc32da96
[2022-01-10 20:26:02,971 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 20:26:02,972 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 20:26:02,973 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 20:26:02,973 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 20:26:02,975 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 20:26:02,975 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:26:02" (1/1) ...
[2022-01-10 20:26:02,976 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a9582a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:02, skipping insertion in model container
[2022-01-10 20:26:02,976 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:26:02" (1/1) ...
[2022-01-10 20:26:02,987 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 20:26:02,995 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 20:26:03,084 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498]
[2022-01-10 20:26:03,100 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:26:03,107 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 20:26:03,114 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498]
[2022-01-10 20:26:03,118 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:26:03,127 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 20:26:03,127 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03 WrapperNode
[2022-01-10 20:26:03,128 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 20:26:03,128 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 20:26:03,128 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 20:26:03,128 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 20:26:03,133 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,138 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,157 INFO  L137                Inliner]: procedures = 20, calls = 20, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 78
[2022-01-10 20:26:03,158 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 20:26:03,158 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 20:26:03,158 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 20:26:03,158 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 20:26:03,163 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,163 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,175 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,176 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,189 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,191 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,192 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,194 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 20:26:03,194 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 20:26:03,194 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 20:26:03,194 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 20:26:03,197 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,201 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:26:03,208 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:26:03,253 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 20:26:03,269 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 20:26:03,287 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 20:26:03,287 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 20:26:03,287 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2022-01-10 20:26:03,287 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 20:26:03,287 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 20:26:03,287 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 20:26:03,287 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 20:26:03,328 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 20:26:03,329 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 20:26:03,434 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 20:26:03,438 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 20:26:03,438 INFO  L299             CfgBuilder]: Removed 2 assume(true) statements.
[2022-01-10 20:26:03,439 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:26:03 BoogieIcfgContainer
[2022-01-10 20:26:03,439 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 20:26:03,440 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 20:26:03,440 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 20:26:03,441 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 20:26:03,447 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:26:03" (1/1) ...
[2022-01-10 20:26:03,528 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:26:03 BasicIcfg
[2022-01-10 20:26:03,528 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 20:26:03,529 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 20:26:03,529 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 20:26:03,531 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 20:26:03,531 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:26:02" (1/4) ...
[2022-01-10 20:26:03,532 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cc73c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:26:03, skipping insertion in model container
[2022-01-10 20:26:03,532 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:26:03" (2/4) ...
[2022-01-10 20:26:03,532 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cc73c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:26:03, skipping insertion in model container
[2022-01-10 20:26:03,532 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:26:03" (3/4) ...
[2022-01-10 20:26:03,532 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cc73c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:26:03, skipping insertion in model container
[2022-01-10 20:26:03,532 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:26:03" (4/4) ...
[2022-01-10 20:26:03,533 INFO  L111   eAbstractionObserver]: Analyzing ICFG elimination_max.cTransformedIcfg
[2022-01-10 20:26:03,536 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 20:26:03,536 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2022-01-10 20:26:03,563 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 20:26:03,567 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 20:26:03,567 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-01-10 20:26:03,576 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 25 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 24 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 20:26:03,581 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 20:26:03,581 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:26:03,582 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:26:03,582 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:26:03,587 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:26:03,588 INFO  L85        PathProgramCache]: Analyzing trace with hash 267065772, now seen corresponding path program 1 times
[2022-01-10 20:26:03,593 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:26:03,594 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053474667]
[2022-01-10 20:26:03,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:26:03,594 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:26:03,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:26:03,715 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 20:26:03,716 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:26:03,717 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053474667]
[2022-01-10 20:26:03,718 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053474667] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:26:03,718 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:26:03,718 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 20:26:03,719 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284057778]
[2022-01-10 20:26:03,720 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:26:03,723 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 20:26:03,724 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:26:03,745 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 20:26:03,746 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 20:26:03,748 INFO  L87              Difference]: Start difference. First operand  has 25 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 24 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) Second operand  has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 20:26:03,764 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:26:03,764 INFO  L93              Difference]: Finished difference Result 47 states and 64 transitions.
[2022-01-10 20:26:03,764 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 20:26:03,765 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12
[2022-01-10 20:26:03,766 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:26:03,772 INFO  L225             Difference]: With dead ends: 47
[2022-01-10 20:26:03,772 INFO  L226             Difference]: Without dead ends: 21
[2022-01-10 20:26:03,774 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 20:26:03,779 INFO  L933         BasicCegarLoop]: 28 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, 28 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 20:26:03,779 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 20:26:03,797 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2022-01-10 20:26:03,810 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2022-01-10 20:26:03,811 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 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 20:26:03,812 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions.
[2022-01-10 20:26:03,813 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12
[2022-01-10 20:26:03,813 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:26:03,814 INFO  L470      AbstractCegarLoop]: Abstraction has 21 states and 24 transitions.
[2022-01-10 20:26:03,814 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 20:26:03,815 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions.
[2022-01-10 20:26:03,815 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 20:26:03,815 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:26:03,816 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:26:03,816 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 20:26:03,816 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:26:03,820 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:26:03,820 INFO  L85        PathProgramCache]: Analyzing trace with hash 99211209, now seen corresponding path program 1 times
[2022-01-10 20:26:03,821 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:26:03,821 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180250464]
[2022-01-10 20:26:03,821 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:26:03,821 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:26:03,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:26:04,173 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 20:26:04,174 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:26:04,175 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180250464]
[2022-01-10 20:26:04,175 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180250464] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:26:04,175 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:26:04,175 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-01-10 20:26:04,175 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104868714]
[2022-01-10 20:26:04,176 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:26:04,178 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 20:26:04,178 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:26:04,179 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 20:26:04,180 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-10 20:26:04,180 INFO  L87              Difference]: Start difference. First operand 21 states and 24 transitions. Second operand  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 20:26:04,292 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:26:04,292 INFO  L93              Difference]: Finished difference Result 38 states and 44 transitions.
[2022-01-10 20:26:04,292 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 20:26:04,293 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 12
[2022-01-10 20:26:04,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:26:04,294 INFO  L225             Difference]: With dead ends: 38
[2022-01-10 20:26:04,295 INFO  L226             Difference]: Without dead ends: 22
[2022-01-10 20:26:04,296 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72
[2022-01-10 20:26:04,296 INFO  L933         BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 20:26:04,297 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 66 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 20:26:04,297 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-01-10 20:26:04,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2022-01-10 20:26:04,303 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 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 20:26:04,304 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions.
[2022-01-10 20:26:04,304 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12
[2022-01-10 20:26:04,304 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:26:04,304 INFO  L470      AbstractCegarLoop]: Abstraction has 22 states and 25 transitions.
[2022-01-10 20:26:04,305 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 20:26:04,306 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions.
[2022-01-10 20:26:04,308 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 20:26:04,308 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:26:04,312 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:26:04,312 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 20:26:04,313 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:26:04,313 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:26:04,314 INFO  L85        PathProgramCache]: Analyzing trace with hash 1304201143, now seen corresponding path program 1 times
[2022-01-10 20:26:04,314 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:26:04,314 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634049163]
[2022-01-10 20:26:04,314 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:26:04,314 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:26:04,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:26:08,079 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:26:08,080 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:26:08,080 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634049163]
[2022-01-10 20:26:08,080 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634049163] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:26:08,080 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452252130]
[2022-01-10 20:26:08,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:26:08,080 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:26:08,080 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:26:08,103 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 20:26:08,141 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 20:26:08,503 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:26:08,505 INFO  L263         TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 44 conjunts are in the unsatisfiable core
[2022-01-10 20:26:08,510 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:26:08,744 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2022-01-10 20:26:24,781 INFO  L173   IndexEqualityManager]: detected equality via solver
[2022-01-10 20:26:24,789 INFO  L353             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-01-10 20:26:24,790 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 242 treesize of output 50
[2022-01-10 20:26:24,812 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:26:24,813 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 20:26:31,059 INFO  L353             Elim1Store]: treesize reduction 5, result has 87.2 percent of original size
[2022-01-10 20:26:31,059 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 408 treesize of output 253
[2022-01-10 20:26:42,868 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:26:42,868 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452252130] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 20:26:42,869 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 20:26:42,869 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27
[2022-01-10 20:26:42,869 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52004918]
[2022-01-10 20:26:42,869 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 20:26:42,870 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-01-10 20:26:42,870 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:26:42,871 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-01-10 20:26:42,873 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=573, Unknown=1, NotChecked=0, Total=702
[2022-01-10 20:26:42,873 INFO  L87              Difference]: Start difference. First operand 22 states and 25 transitions. Second operand  has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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 20:26:44,604 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:26:44,604 INFO  L93              Difference]: Finished difference Result 44 states and 56 transitions.
[2022-01-10 20:26:44,605 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2022-01-10 20:26:44,605 INFO  L78                 Accepts]: Start accepts. Automaton has  has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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 13
[2022-01-10 20:26:44,605 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:26:44,606 INFO  L225             Difference]: With dead ends: 44
[2022-01-10 20:26:44,606 INFO  L226             Difference]: Without dead ends: 42
[2022-01-10 20:26:44,606 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=270, Invalid=919, Unknown=1, NotChecked=0, Total=1190
[2022-01-10 20:26:44,607 INFO  L933         BasicCegarLoop]: 11 mSDtfsCounter, 88 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-10 20:26:44,607 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 88 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 102 Invalid, 0 Unknown, 65 Unchecked, 0.4s Time]
[2022-01-10 20:26:44,608 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-01-10 20:26:44,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30.
[2022-01-10 20:26:44,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 29 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 20:26:44,611 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions.
[2022-01-10 20:26:44,611 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 13
[2022-01-10 20:26:44,612 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:26:44,612 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 36 transitions.
[2022-01-10 20:26:44,612 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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 20:26:44,612 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions.
[2022-01-10 20:26:44,612 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 20:26:44,612 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:26:44,612 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:26:44,621 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-10 20:26:44,818 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:26:44,818 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:26:44,819 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:26:44,819 INFO  L85        PathProgramCache]: Analyzing trace with hash 4183433, now seen corresponding path program 2 times
[2022-01-10 20:26:44,819 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:26:44,819 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245535486]
[2022-01-10 20:26:44,819 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:26:44,819 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:26:44,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:26:45,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:26:45,237 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:26:45,237 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245535486]
[2022-01-10 20:26:45,237 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245535486] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:26:45,237 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306376096]
[2022-01-10 20:26:45,237 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 20:26:45,237 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:26:45,238 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:26:45,239 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 20:26:45,278 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 20:26:45,419 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2022-01-10 20:26:45,420 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 20:26:45,421 INFO  L263         TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-01-10 20:26:45,423 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:26:47,457 INFO  L173   IndexEqualityManager]: detected equality via solver
[2022-01-10 20:26:47,464 INFO  L353             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-01-10 20:26:47,464 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 44
[2022-01-10 20:26:47,494 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-01-10 20:26:47,495 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 20:26:47,495 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306376096] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:26:47,495 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-10 20:26:47,495 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18
[2022-01-10 20:26:47,495 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147024978]
[2022-01-10 20:26:47,495 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:26:47,495 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-10 20:26:47,496 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:26:47,496 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-10 20:26:47,496 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306
[2022-01-10 20:26:47,496 INFO  L87              Difference]: Start difference. First operand 30 states and 36 transitions. Second operand  has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:26:48,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:26:48,481 INFO  L93              Difference]: Finished difference Result 44 states and 54 transitions.
[2022-01-10 20:26:48,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-10 20:26:48,481 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2022-01-10 20:26:48,481 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:26:48,482 INFO  L225             Difference]: With dead ends: 44
[2022-01-10 20:26:48,483 INFO  L226             Difference]: Without dead ends: 42
[2022-01-10 20:26:48,483 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506
[2022-01-10 20:26:48,484 INFO  L933         BasicCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 20:26:48,484 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 70 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 44 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time]
[2022-01-10 20:26:48,484 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-01-10 20:26:48,488 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31.
[2022-01-10 20:26:48,488 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 30 states have internal predecessors, (38), 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 20:26:48,489 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions.
[2022-01-10 20:26:48,489 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14
[2022-01-10 20:26:48,489 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:26:48,489 INFO  L470      AbstractCegarLoop]: Abstraction has 31 states and 38 transitions.
[2022-01-10 20:26:48,489 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:26:48,489 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions.
[2022-01-10 20:26:48,489 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-10 20:26:48,490 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:26:48,490 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:26:48,494 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-10 20:26:48,693 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2022-01-10 20:26:48,695 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:26:48,695 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:26:48,695 INFO  L85        PathProgramCache]: Analyzing trace with hash 1660710105, now seen corresponding path program 1 times
[2022-01-10 20:26:48,695 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:26:48,695 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31908057]
[2022-01-10 20:26:48,696 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:26:48,696 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:26:48,734 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:26:48,874 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:26:48,874 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:26:48,874 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31908057]
[2022-01-10 20:26:48,874 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31908057] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:26:48,875 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420072137]
[2022-01-10 20:26:48,875 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:26:48,875 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:26:48,875 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:26:48,876 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 20:26:48,877 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 20:26:49,060 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:26:49,061 INFO  L263         TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 21 conjunts are in the unsatisfiable core
[2022-01-10 20:26:49,062 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:26:49,311 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:26:49,311 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 20:26:50,334 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:26:50,334 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420072137] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 20:26:50,334 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 20:26:50,334 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 17
[2022-01-10 20:26:50,334 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066247037]
[2022-01-10 20:26:50,335 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 20:26:50,335 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-01-10 20:26:50,335 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:26:50,335 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-01-10 20:26:50,335 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272
[2022-01-10 20:26:50,335 INFO  L87              Difference]: Start difference. First operand 31 states and 38 transitions. Second operand  has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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 20:26:50,899 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:26:50,900 INFO  L93              Difference]: Finished difference Result 62 states and 72 transitions.
[2022-01-10 20:26:50,901 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-01-10 20:26:50,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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 15
[2022-01-10 20:26:50,901 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:26:50,901 INFO  L225             Difference]: With dead ends: 62
[2022-01-10 20:26:50,901 INFO  L226             Difference]: Without dead ends: 41
[2022-01-10 20:26:50,902 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420
[2022-01-10 20:26:50,902 INFO  L933         BasicCegarLoop]: 16 mSDtfsCounter, 118 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-10 20:26:50,903 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 147 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-10 20:26:50,903 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2022-01-10 20:26:50,907 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30.
[2022-01-10 20:26:50,907 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 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 20:26:50,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions.
[2022-01-10 20:26:50,908 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15
[2022-01-10 20:26:50,908 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:26:50,908 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 35 transitions.
[2022-01-10 20:26:50,908 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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 20:26:50,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions.
[2022-01-10 20:26:50,908 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-10 20:26:50,908 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:26:50,909 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:26:50,913 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-01-10 20:26:51,112 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:26:51,113 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:26:51,113 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:26:51,113 INFO  L85        PathProgramCache]: Analyzing trace with hash -2115793365, now seen corresponding path program 2 times
[2022-01-10 20:26:51,113 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:26:51,113 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467145258]
[2022-01-10 20:26:51,113 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:26:51,113 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:26:51,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:27:06,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:27:06,107 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:27:06,108 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467145258]
[2022-01-10 20:27:06,108 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467145258] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:27:06,108 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541378682]
[2022-01-10 20:27:06,108 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 20:27:06,108 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:27:06,108 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:27:06,109 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 20:27:06,110 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-01-10 20:27:06,424 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 20:27:06,424 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 20:27:06,426 INFO  L263         TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 53 conjunts are in the unsatisfiable core
[2022-01-10 20:27:06,429 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:27:06,854 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2022-01-10 20:27:07,076 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-10 20:27:07,076 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24
[2022-01-10 20:27:11,734 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-10 20:27:11,845 INFO  L353             Elim1Store]: treesize reduction 86, result has 3.4 percent of original size
[2022-01-10 20:27:11,846 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 260 treesize of output 56
[2022-01-10 20:27:11,878 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:27:11,879 INFO  L328         TraceCheckSpWp]: Computing backward predicates...