/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_SUM.epf -i ../../../trunk/examples/svcomp/reducercommutativity/max.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 03:01:54,066 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 03:01:54,068 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 03:01:54,124 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 03:01:54,124 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 03:01:54,125 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 03:01:54,126 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 03:01:54,131 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-11 03:01:54,134 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-11 03:01:54,135 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-11 03:01:54,136 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-11 03:01:54,136 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 03:01:54,137 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 03:01:54,137 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 03:01:54,138 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 03:01:54,138 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 03:01:54,139 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 03:01:54,139 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 03:01:54,140 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 03:01:54,141 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 03:01:54,142 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 03:01:54,147 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 03:01:54,150 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 03:01:54,151 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 03:01:54,157 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 03:01:54,157 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 03:01:54,157 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 03:01:54,157 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 03:01:54,158 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 03:01:54,158 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 03:01:54,158 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 03:01:54,159 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 03:01:54,159 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 03:01:54,159 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 03:01:54,160 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 03:01:54,160 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 03:01:54,161 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 03:01:54,161 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 03:01:54,161 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-11 03:01:54,161 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-11 03:01:54,162 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 03:01:54,168 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf
[2022-01-11 03:01:54,190 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 03:01:54,191 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 03:01:54,191 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 03:01:54,191 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 03:01:54,192 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 03:01:54,192 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 03:01:54,192 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 03:01:54,192 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 03:01:54,192 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 03:01:54,192 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 03:01:54,193 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 03:01:54,193 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 03:01:54,193 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 03:01:54,193 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 03:01:54,193 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 03:01:54,193 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 03:01:54,194 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 03:01:54,194 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 03:01:54,194 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 03:01:54,194 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 03:01:54,194 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 03:01:54,194 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 03:01:54,194 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 03:01:54,194 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 03:01:54,194 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 03:01:54,194 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 03:01:54,194 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 03:01:54,194 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 03:01:54,195 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 03:01:54,195 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 03:01:54,195 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 03:01:54,195 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 03:01:54,196 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 03:01:54,196 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_SUM
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 03:01:54,380 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 03:01:54,410 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 03:01:54,411 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 03:01:54,412 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 03:01:54,413 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 03:01:54,414 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max.i
[2022-01-11 03:01:54,481 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3427c8a22/44ee63dbad854757b6c33f26c88c83be/FLAG6bcd6c237
[2022-01-11 03:01:54,818 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 03:01:54,818 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max.i
[2022-01-11 03:01:54,822 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3427c8a22/44ee63dbad854757b6c33f26c88c83be/FLAG6bcd6c237
[2022-01-11 03:01:54,831 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3427c8a22/44ee63dbad854757b6c33f26c88c83be
[2022-01-11 03:01:54,833 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 03:01:54,834 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 03:01:54,835 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 03:01:54,835 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 03:01:54,837 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 03:01:54,837 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:01:54" (1/1) ...
[2022-01-11 03:01:54,838 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b914826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:54, skipping insertion in model container
[2022-01-11 03:01:54,838 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:01:54" (1/1) ...
[2022-01-11 03:01:54,842 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 03:01:54,851 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 03:01:54,991 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max.i[1295,1308]
[2022-01-11 03:01:54,994 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 03:01:55,003 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 03:01:55,046 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max.i[1295,1308]
[2022-01-11 03:01:55,051 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 03:01:55,059 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 03:01:55,060 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55 WrapperNode
[2022-01-11 03:01:55,060 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 03:01:55,060 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 03:01:55,060 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 03:01:55,061 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 03:01:55,069 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,075 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,095 INFO  L137                Inliner]: procedures = 18, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130
[2022-01-11 03:01:55,095 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 03:01:55,096 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 03:01:55,096 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 03:01:55,096 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 03:01:55,103 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,103 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,114 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,114 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,120 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,122 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,135 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,136 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 03:01:55,137 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 03:01:55,137 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 03:01:55,137 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 03:01:55,139 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,144 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 03:01:55,152 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 03:01:55,189 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)
[2022-01-11 03:01:55,195 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
[2022-01-11 03:01:55,217 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 03:01:55,217 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 03:01:55,217 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-11 03:01:55,218 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-11 03:01:55,218 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 03:01:55,218 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 03:01:55,218 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-11 03:01:55,221 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-11 03:01:55,267 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 03:01:55,269 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 03:01:55,409 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 03:01:55,413 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 03:01:55,413 INFO  L299             CfgBuilder]: Removed 4 assume(true) statements.
[2022-01-11 03:01:55,414 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:01:55 BoogieIcfgContainer
[2022-01-11 03:01:55,414 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 03:01:55,415 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 03:01:55,415 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 03:01:55,416 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 03:01:55,418 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:01:55" (1/1) ...
[2022-01-11 03:01:55,576 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:01:55 BasicIcfg
[2022-01-11 03:01:55,576 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 03:01:55,577 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 03:01:55,577 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 03:01:55,579 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 03:01:55,580 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:01:54" (1/4) ...
[2022-01-11 03:01:55,580 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51022b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:01:55, skipping insertion in model container
[2022-01-11 03:01:55,580 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:01:55" (2/4) ...
[2022-01-11 03:01:55,580 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51022b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:01:55, skipping insertion in model container
[2022-01-11 03:01:55,580 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:01:55" (3/4) ...
[2022-01-11 03:01:55,581 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51022b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:01:55, skipping insertion in model container
[2022-01-11 03:01:55,581 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:01:55" (4/4) ...
[2022-01-11 03:01:55,581 INFO  L111   eAbstractionObserver]: Analyzing ICFG max.iTransformedIcfg
[2022-01-11 03:01:55,585 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 03:01:55,585 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-11 03:01:55,614 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 03:01:55,619 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
[2022-01-11 03:01:55,621 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-11 03:01:55,633 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 32 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 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)
[2022-01-11 03:01:55,636 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-11 03:01:55,636 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:01:55,637 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 03:01:55,637 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:01:55,644 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:01:55,645 INFO  L85        PathProgramCache]: Analyzing trace with hash -525053866, now seen corresponding path program 1 times
[2022-01-11 03:01:55,651 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:01:55,652 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668714055]
[2022-01-11 03:01:55,653 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:01:55,654 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:01:55,789 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:01:55,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 03:01:55,846 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 03:01:55,847 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668714055]
[2022-01-11 03:01:55,847 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668714055] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 03:01:55,848 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 03:01:55,848 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-11 03:01:55,849 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191715998]
[2022-01-11 03:01:55,850 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 03:01:55,853 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-11 03:01:55,853 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 03:01:55,886 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-11 03:01:55,887 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 03:01:55,888 INFO  L87              Difference]: Start difference. First operand  has 32 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:01:55,899 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 03:01:55,899 INFO  L93              Difference]: Finished difference Result 57 states and 77 transitions.
[2022-01-11 03:01:55,900 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-11 03:01:55,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2022-01-11 03:01:55,901 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 03:01:55,910 INFO  L225             Difference]: With dead ends: 57
[2022-01-11 03:01:55,911 INFO  L226             Difference]: Without dead ends: 27
[2022-01-11 03:01:55,913 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
[2022-01-11 03:01:55,916 INFO  L933         BasicCegarLoop]: 39 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, 39 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
[2022-01-11 03:01:55,917 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 03:01:55,930 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-01-11 03:01:55,938 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2022-01-11 03:01:55,939 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 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)
[2022-01-11 03:01:55,940 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions.
[2022-01-11 03:01:55,941 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 16
[2022-01-11 03:01:55,941 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 03:01:55,941 INFO  L470      AbstractCegarLoop]: Abstraction has 27 states and 33 transitions.
[2022-01-11 03:01:55,942 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:01:55,942 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions.
[2022-01-11 03:01:55,942 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-11 03:01:55,942 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:01:55,942 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 03:01:55,943 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 03:01:55,943 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:01:55,943 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:01:55,944 INFO  L85        PathProgramCache]: Analyzing trace with hash -126543176, now seen corresponding path program 1 times
[2022-01-11 03:01:55,944 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:01:55,944 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463869341]
[2022-01-11 03:01:55,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:01:55,944 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:01:56,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:01:56,085 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 03:01:56,085 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 03:01:56,085 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463869341]
[2022-01-11 03:01:56,085 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463869341] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 03:01:56,086 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 03:01:56,086 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-11 03:01:56,086 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544823648]
[2022-01-11 03:01:56,086 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 03:01:56,087 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-11 03:01:56,087 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 03:01:56,087 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-11 03:01:56,087 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-11 03:01:56,088 INFO  L87              Difference]: Start difference. First operand 27 states and 33 transitions. Second operand  has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:01:56,189 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 03:01:56,190 INFO  L93              Difference]: Finished difference Result 51 states and 63 transitions.
[2022-01-11 03:01:56,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-11 03:01:56,190 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2022-01-11 03:01:56,190 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 03:01:56,191 INFO  L225             Difference]: With dead ends: 51
[2022-01-11 03:01:56,191 INFO  L226             Difference]: Without dead ends: 31
[2022-01-11 03:01:56,206 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
[2022-01-11 03:01:56,207 INFO  L933         BasicCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 03:01:56,207 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 44 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-11 03:01:56,208 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-01-11 03:01:56,212 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28.
[2022-01-11 03:01:56,213 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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)
[2022-01-11 03:01:56,213 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions.
[2022-01-11 03:01:56,213 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16
[2022-01-11 03:01:56,213 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 03:01:56,213 INFO  L470      AbstractCegarLoop]: Abstraction has 28 states and 34 transitions.
[2022-01-11 03:01:56,214 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:01:56,214 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions.
[2022-01-11 03:01:56,214 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2022-01-11 03:01:56,214 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:01:56,214 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]
[2022-01-11 03:01:56,214 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-11 03:01:56,215 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:01:56,215 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:01:56,215 INFO  L85        PathProgramCache]: Analyzing trace with hash 1127792720, now seen corresponding path program 1 times
[2022-01-11 03:01:56,215 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:01:56,215 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699619144]
[2022-01-11 03:01:56,215 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:01:56,216 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:01:56,276 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:01:56,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-11 03:01:56,328 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 03:01:56,328 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699619144]
[2022-01-11 03:01:56,328 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699619144] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 03:01:56,328 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 03:01:56,328 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-11 03:01:56,329 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838961743]
[2022-01-11 03:01:56,329 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 03:01:56,329 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-11 03:01:56,329 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 03:01:56,329 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-11 03:01:56,330 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-01-11 03:01:56,330 INFO  L87              Difference]: Start difference. First operand 28 states and 34 transitions. Second operand  has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:01:56,438 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 03:01:56,438 INFO  L93              Difference]: Finished difference Result 53 states and 66 transitions.
[2022-01-11 03:01:56,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-11 03:01:56,439 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2022-01-11 03:01:56,439 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 03:01:56,440 INFO  L225             Difference]: With dead ends: 53
[2022-01-11 03:01:56,440 INFO  L226             Difference]: Without dead ends: 39
[2022-01-11 03:01:56,440 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-01-11 03:01:56,441 INFO  L933         BasicCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 03:01:56,441 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-11 03:01:56,442 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2022-01-11 03:01:56,445 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30.
[2022-01-11 03:01:56,445 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 29 states have (on average 1.2413793103448276) 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)
[2022-01-11 03:01:56,445 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions.
[2022-01-11 03:01:56,446 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 20
[2022-01-11 03:01:56,446 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 03:01:56,446 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 36 transitions.
[2022-01-11 03:01:56,446 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:01:56,446 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions.
[2022-01-11 03:01:56,446 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-01-11 03:01:56,447 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:01:56,447 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]
[2022-01-11 03:01:56,447 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-11 03:01:56,447 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:01:56,447 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:01:56,447 INFO  L85        PathProgramCache]: Analyzing trace with hash 1547587026, now seen corresponding path program 1 times
[2022-01-11 03:01:56,448 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:01:56,448 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872253549]
[2022-01-11 03:01:56,448 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:01:56,448 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:01:56,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:01:56,697 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-11 03:01:56,697 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 03:01:56,697 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872253549]
[2022-01-11 03:01:56,698 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872253549] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 03:01:56,698 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030980670]
[2022-01-11 03:01:56,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:01:56,699 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 03:01:56,699 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 03:01:56,739 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)
[2022-01-11 03:01:56,767 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-11 03:01:56,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:01:56,980 INFO  L263         TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-01-11 03:01:56,984 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 03:01:57,132 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-11 03:01:57,132 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 03:01:57,244 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-11 03:01:57,245 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030980670] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 03:01:57,245 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-11 03:01:57,245 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8
[2022-01-11 03:01:57,246 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732821472]
[2022-01-11 03:01:57,246 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-11 03:01:57,249 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-11 03:01:57,250 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 03:01:57,250 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-11 03:01:57,250 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-01-11 03:01:57,251 INFO  L87              Difference]: Start difference. First operand 30 states and 36 transitions. Second operand  has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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)
[2022-01-11 03:01:57,455 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 03:01:57,455 INFO  L93              Difference]: Finished difference Result 73 states and 92 transitions.
[2022-01-11 03:01:57,456 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-11 03:01:57,456 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 28
[2022-01-11 03:01:57,456 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 03:01:57,456 INFO  L225             Difference]: With dead ends: 73
[2022-01-11 03:01:57,456 INFO  L226             Difference]: Without dead ends: 51
[2022-01-11 03:01:57,457 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2022-01-11 03:01:57,458 INFO  L933         BasicCegarLoop]: 24 mSDtfsCounter, 74 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-11 03:01:57,458 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 66 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-11 03:01:57,458 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2022-01-11 03:01:57,464 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42.
[2022-01-11 03:01:57,465 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 states have internal predecessors, (51), 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)
[2022-01-11 03:01:57,467 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions.
[2022-01-11 03:01:57,467 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 28
[2022-01-11 03:01:57,467 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 03:01:57,467 INFO  L470      AbstractCegarLoop]: Abstraction has 42 states and 51 transitions.
[2022-01-11 03:01:57,467 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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)
[2022-01-11 03:01:57,468 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions.
[2022-01-11 03:01:57,469 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2022-01-11 03:01:57,469 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:01:57,469 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 03:01:57,478 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-11 03:01:57,674 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
[2022-01-11 03:01:57,675 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:01:57,676 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:01:57,676 INFO  L85        PathProgramCache]: Analyzing trace with hash 848788716, now seen corresponding path program 2 times
[2022-01-11 03:01:57,676 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:01:57,677 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619683676]
[2022-01-11 03:01:57,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:01:57,678 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:01:57,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:01:58,081 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-01-11 03:01:58,081 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 03:01:58,081 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619683676]
[2022-01-11 03:01:58,081 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619683676] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 03:01:58,082 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991141503]
[2022-01-11 03:01:58,082 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-11 03:01:58,082 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 03:01:58,082 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 03:01:58,083 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)
[2022-01-11 03:01:58,101 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-11 03:01:58,379 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2022-01-11 03:01:58,379 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-11 03:01:58,382 INFO  L263         TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-11 03:01:58,383 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 03:01:58,636 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2022-01-11 03:01:58,636 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-11 03:01:58,637 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991141503] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 03:01:58,637 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-11 03:01:58,637 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2022-01-11 03:01:58,637 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741826090]
[2022-01-11 03:01:58,637 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 03:01:58,637 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-11 03:01:58,637 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 03:01:58,638 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-11 03:01:58,638 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72
[2022-01-11 03:01:58,638 INFO  L87              Difference]: Start difference. First operand 42 states and 51 transitions. Second operand  has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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)
[2022-01-11 03:01:58,690 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 03:01:58,690 INFO  L93              Difference]: Finished difference Result 59 states and 71 transitions.
[2022-01-11 03:01:58,692 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-11 03:01:58,692 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 40
[2022-01-11 03:01:58,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 03:01:58,693 INFO  L225             Difference]: With dead ends: 59
[2022-01-11 03:01:58,693 INFO  L226             Difference]: Without dead ends: 44
[2022-01-11 03:01:58,693 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72
[2022-01-11 03:01:58,694 INFO  L933         BasicCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-11 03:01:58,694 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 42 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 03:01:58,695 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2022-01-11 03:01:58,699 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43.
[2022-01-11 03:01:58,699 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 43 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 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)
[2022-01-11 03:01:58,699 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions.
[2022-01-11 03:01:58,700 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 40
[2022-01-11 03:01:58,700 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 03:01:58,700 INFO  L470      AbstractCegarLoop]: Abstraction has 43 states and 52 transitions.
[2022-01-11 03:01:58,700 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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)
[2022-01-11 03:01:58,700 INFO  L276                IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions.
[2022-01-11 03:01:58,701 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2022-01-11 03:01:58,701 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:01:58,701 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 03:01:58,705 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-11 03:01:58,901 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
[2022-01-11 03:01:58,902 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:01:58,902 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:01:58,902 INFO  L85        PathProgramCache]: Analyzing trace with hash 480086889, now seen corresponding path program 1 times
[2022-01-11 03:01:58,902 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:01:58,902 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156318720]
[2022-01-11 03:01:58,902 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:01:58,903 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:01:59,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:02:03,863 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-01-11 03:02:03,864 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 03:02:03,864 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156318720]
[2022-01-11 03:02:03,864 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156318720] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 03:02:03,864 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561843864]
[2022-01-11 03:02:03,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:02:03,865 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 03:02:03,865 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 03:02:03,880 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)
[2022-01-11 03:02:03,881 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-11 03:02:05,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:02:05,580 INFO  L263         TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 141 conjunts are in the unsatisfiable core
[2022-01-11 03:02:05,596 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 03:02:16,442 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:02:16,443 INFO  L173   IndexEqualityManager]: detected equality via solver
[2022-01-11 03:02:16,448 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 93
[2022-01-11 03:02:36,703 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-01-11 03:02:36,703 INFO  L328         TraceCheckSpWp]: Computing backward predicates...