/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_BITWISE.epf -i ../../../trunk/examples/svcomp/float-benchs/Muller_Kahan.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 11:47:59,081 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 11:47:59,082 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 11:47:59,131 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 11:47:59,144 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 11:47:59,146 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 11:47:59,148 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 11:47:59,151 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 11:47:59,154 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 11:47:59,156 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 11:47:59,156 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 11:47:59,157 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 11:47:59,158 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 11:47:59,160 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 11:47:59,161 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 11:47:59,162 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 11:47:59,163 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 11:47:59,167 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 11:47:59,168 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 11:47:59,168 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 11:47:59,170 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 11:47:59,170 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 11:47:59,175 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 11:47:59,175 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 11:47:59,175 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 11:47:59,176 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 11:47:59,176 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 11:47:59,177 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 11:47:59,177 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 11:47:59,178 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 11:47:59,179 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 11:47:59,179 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 11:47:59,180 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 11:47:59,180 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 11:47:59,181 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 11:47:59,181 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 11:47:59,181 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 11:47:59,182 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 11:47:59,184 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf
[2022-01-10 11:47:59,208 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 11:47:59,208 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 11:47:59,208 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 11:47:59,208 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 11:47:59,209 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 11:47:59,209 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 11:47:59,209 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 11:47:59,210 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 11:47:59,210 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 11:47:59,210 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 11:47:59,210 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 11:47:59,210 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 11:47:59,210 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 11:47:59,211 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 11:47:59,211 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 11:47:59,211 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 11:47:59,211 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 11:47:59,211 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 11:47:59,211 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 11:47:59,211 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 11:47:59,211 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 11:47:59,211 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 11:47:59,211 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 11:47:59,211 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 11:47:59,212 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 11:47:59,212 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 11:47:59,212 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 11:47:59,212 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 11:47:59,212 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 11:47:59,212 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 11:47:59,212 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 11:47:59,212 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 11:47:59,213 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 11:47:59,213 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_BITWISE
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 11:47:59,401 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 11:47:59,429 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 11:47:59,430 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 11:47:59,431 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 11:47:59,431 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 11:47:59,432 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/Muller_Kahan.c
[2022-01-10 11:47:59,473 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41dbefb62/b9787d2f17374652b80dc01994a796b4/FLAG468f4ad54
[2022-01-10 11:47:59,793 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 11:47:59,793 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/Muller_Kahan.c
[2022-01-10 11:47:59,800 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41dbefb62/b9787d2f17374652b80dc01994a796b4/FLAG468f4ad54
[2022-01-10 11:48:00,230 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41dbefb62/b9787d2f17374652b80dc01994a796b4
[2022-01-10 11:48:00,232 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 11:48:00,234 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 11:48:00,236 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 11:48:00,236 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 11:48:00,239 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 11:48:00,239 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,241 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b32cceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00, skipping insertion in model container
[2022-01-10 11:48:00,241 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,246 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 11:48:00,255 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 11:48:00,409 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/Muller_Kahan.c[631,644]
[2022-01-10 11:48:00,431 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 11:48:00,438 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 11:48:00,448 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/Muller_Kahan.c[631,644]
[2022-01-10 11:48:00,452 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 11:48:00,463 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 11:48:00,463 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00 WrapperNode
[2022-01-10 11:48:00,463 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 11:48:00,464 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 11:48:00,464 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 11:48:00,464 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 11:48:00,468 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,475 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,487 INFO  L137                Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37
[2022-01-10 11:48:00,487 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 11:48:00,488 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 11:48:00,488 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 11:48:00,488 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 11:48:00,494 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,494 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,502 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,502 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,513 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,515 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,516 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,517 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 11:48:00,518 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 11:48:00,518 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 11:48:00,518 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 11:48:00,519 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,524 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 11:48:00,531 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 11:48:00,560 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 11:48:00,580 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 11:48:00,602 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 11:48:00,602 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 11:48:00,602 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 11:48:00,602 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 11:48:00,647 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 11:48:00,648 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 11:48:00,726 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 11:48:00,733 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 11:48:00,734 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 11:48:00,735 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:00 BoogieIcfgContainer
[2022-01-10 11:48:00,735 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 11:48:00,735 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 11:48:00,735 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 11:48:00,736 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 11:48:00,738 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:00" (1/1) ...
[2022-01-10 11:48:00,768 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:48:00 BasicIcfg
[2022-01-10 11:48:00,768 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 11:48:00,769 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 11:48:00,769 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 11:48:00,771 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 11:48:00,771 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:48:00" (1/4) ...
[2022-01-10 11:48:00,771 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbd6fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:48:00, skipping insertion in model container
[2022-01-10 11:48:00,771 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:00" (2/4) ...
[2022-01-10 11:48:00,772 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbd6fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:48:00, skipping insertion in model container
[2022-01-10 11:48:00,772 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:00" (3/4) ...
[2022-01-10 11:48:00,772 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbd6fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:48:00, skipping insertion in model container
[2022-01-10 11:48:00,772 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:48:00" (4/4) ...
[2022-01-10 11:48:00,773 INFO  L111   eAbstractionObserver]: Analyzing ICFG Muller_Kahan.cTransformedIcfg
[2022-01-10 11:48:00,776 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 11:48:00,776 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 11:48:00,803 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 11:48:00,808 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 11:48:00,808 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 11:48:00,816 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 11:48:00,819 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 11:48:00,819 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 11:48:00,820 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 11:48:00,820 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 11:48:00,823 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 11:48:00,823 INFO  L85        PathProgramCache]: Analyzing trace with hash 1805578951, now seen corresponding path program 1 times
[2022-01-10 11:48:00,829 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 11:48:00,829 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756453935]
[2022-01-10 11:48:00,829 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 11:48:00,830 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 11:48:00,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 11:48:00,934 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 11:48:00,934 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 11:48:00,935 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756453935]
[2022-01-10 11:48:00,935 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756453935] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 11:48:00,936 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 11:48:00,936 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 11:48:00,937 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101123654]
[2022-01-10 11:48:00,938 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 11:48:00,942 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 11:48:00,942 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 11:48:00,966 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 11:48:00,967 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 11:48:00,968 INFO  L87              Difference]: Start difference. First operand  has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 11:48:00,976 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 11:48:00,976 INFO  L93              Difference]: Finished difference Result 20 states and 22 transitions.
[2022-01-10 11:48:00,977 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 11:48:00,978 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6
[2022-01-10 11:48:00,978 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 11:48:00,983 INFO  L225             Difference]: With dead ends: 20
[2022-01-10 11:48:00,983 INFO  L226             Difference]: Without dead ends: 8
[2022-01-10 11:48:00,984 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 11:48:00,990 INFO  L933         BasicCegarLoop]: 12 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, 12 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 11:48:00,990 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 11:48:01,001 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2022-01-10 11:48:01,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2022-01-10 11:48:01,012 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 11:48:01,012 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2022-01-10 11:48:01,013 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6
[2022-01-10 11:48:01,013 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 11:48:01,014 INFO  L470      AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2022-01-10 11:48:01,014 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 11:48:01,015 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2022-01-10 11:48:01,015 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 11:48:01,015 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 11:48:01,016 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 11:48:01,016 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 11:48:01,016 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 11:48:01,018 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 11:48:01,018 INFO  L85        PathProgramCache]: Analyzing trace with hash 1805608742, now seen corresponding path program 1 times
[2022-01-10 11:48:01,019 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 11:48:01,019 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591195362]
[2022-01-10 11:48:01,019 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 11:48:01,019 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 11:48:01,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 11:48:01,125 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 11:48:01,125 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 11:48:01,126 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591195362]
[2022-01-10 11:48:01,126 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591195362] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 11:48:01,126 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 11:48:01,126 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 11:48:01,126 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302564998]
[2022-01-10 11:48:01,126 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 11:48:01,127 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 11:48:01,127 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 11:48:01,128 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 11:48:01,128 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 11:48:01,128 INFO  L87              Difference]: Start difference. First operand 8 states and 8 transitions. Second operand  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 11:48:01,146 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 11:48:01,146 INFO  L93              Difference]: Finished difference Result 14 states and 14 transitions.
[2022-01-10 11:48:01,146 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 11:48:01,146 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6
[2022-01-10 11:48:01,147 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 11:48:01,147 INFO  L225             Difference]: With dead ends: 14
[2022-01-10 11:48:01,147 INFO  L226             Difference]: Without dead ends: 10
[2022-01-10 11:48:01,147 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 11:48:01,148 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 11:48:01,149 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 11:48:01,149 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2022-01-10 11:48:01,152 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2022-01-10 11:48:01,152 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 11:48:01,152 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2022-01-10 11:48:01,153 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6
[2022-01-10 11:48:01,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 11:48:01,153 INFO  L470      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2022-01-10 11:48:01,153 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 11:48:01,153 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2022-01-10 11:48:01,154 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 11:48:01,154 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 11:48:01,154 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 11:48:01,154 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 11:48:01,154 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 11:48:01,155 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 11:48:01,155 INFO  L85        PathProgramCache]: Analyzing trace with hash 52644360, now seen corresponding path program 1 times
[2022-01-10 11:48:01,155 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 11:48:01,155 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377147293]
[2022-01-10 11:48:01,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 11:48:01,155 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 11:48:01,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 11:48:01,197 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 11:48:01,197 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 11:48:01,197 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377147293]
[2022-01-10 11:48:01,197 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377147293] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 11:48:01,197 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995184228]
[2022-01-10 11:48:01,197 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 11:48:01,198 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 11:48:01,198 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 11:48:01,199 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 11:48:01,200 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 11:48:01,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 11:48:01,241 INFO  L263         TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 11:48:01,243 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 11:48:01,343 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 11:48:01,343 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 11:48:01,392 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 11:48:01,392 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [995184228] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 11:48:01,392 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 11:48:01,392 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-01-10 11:48:01,392 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177931529]
[2022-01-10 11:48:01,393 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 11:48:01,393 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 11:48:01,393 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 11:48:01,393 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 11:48:01,393 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 11:48:01,394 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 11:48:01,461 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 11:48:01,461 INFO  L93              Difference]: Finished difference Result 19 states and 21 transitions.
[2022-01-10 11:48:01,462 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 11:48:01,463 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2022-01-10 11:48:01,463 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 11:48:01,463 INFO  L225             Difference]: With dead ends: 19
[2022-01-10 11:48:01,463 INFO  L226             Difference]: Without dead ends: 15
[2022-01-10 11:48:01,463 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-01-10 11:48:01,464 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 11:48:01,465 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 11:48:01,465 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2022-01-10 11:48:01,467 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2022-01-10 11:48:01,468 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 11:48:01,468 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2022-01-10 11:48:01,468 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8
[2022-01-10 11:48:01,468 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 11:48:01,468 INFO  L470      AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2022-01-10 11:48:01,468 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 11:48:01,468 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2022-01-10 11:48:01,469 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 11:48:01,469 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 11:48:01,469 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1]
[2022-01-10 11:48:01,491 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-10 11:48:01,683 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 11:48:01,683 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 11:48:01,686 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 11:48:01,686 INFO  L85        PathProgramCache]: Analyzing trace with hash 20991918, now seen corresponding path program 2 times
[2022-01-10 11:48:01,686 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 11:48:01,686 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522093800]
[2022-01-10 11:48:01,686 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 11:48:01,687 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 11:48:01,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 11:48:01,787 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 11:48:01,788 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 11:48:01,788 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522093800]
[2022-01-10 11:48:01,788 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522093800] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 11:48:01,788 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687319177]
[2022-01-10 11:48:01,788 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 11:48:01,788 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 11:48:01,788 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 11:48:01,789 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 11:48:01,790 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 11:48:01,850 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 11:48:01,850 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 11:48:01,852 INFO  L263         TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-01-10 11:48:01,853 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 11:48:11,689 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 11:48:11,689 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 11:48:14,643 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 11:48:14,644 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687319177] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 11:48:14,644 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 11:48:14,644 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17
[2022-01-10 11:48:14,644 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603021633]
[2022-01-10 11:48:14,644 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 11:48:14,645 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-01-10 11:48:14,645 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 11:48:14,645 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-01-10 11:48:14,646 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=180, Unknown=3, NotChecked=0, Total=272
[2022-01-10 11:48:14,646 INFO  L87              Difference]: Start difference. First operand 15 states and 15 transitions. Second operand  has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 11:48:28,570 WARN  L228               SmtUtils]: Spent 12.72s on a formula simplification. DAG size of input: 43 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-10 11:48:42,631 WARN  L228               SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-10 11:48:42,633 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 11:48:42,633 INFO  L93              Difference]: Finished difference Result 29 states and 33 transitions.
[2022-01-10 11:48:42,634 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2022-01-10 11:48:42,634 INFO  L78                 Accepts]: Start accepts. Automaton has  has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2022-01-10 11:48:42,634 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 11:48:42,634 INFO  L225             Difference]: With dead ends: 29
[2022-01-10 11:48:42,634 INFO  L226             Difference]: Without dead ends: 25
[2022-01-10 11:48:42,635 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=164, Invalid=295, Unknown=3, NotChecked=0, Total=462
[2022-01-10 11:48:42,636 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-10 11:48:42,636 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 33 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 54 Invalid, 0 Unknown, 9 Unchecked, 1.0s Time]
[2022-01-10 11:48:42,637 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-10 11:48:42,640 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2022-01-10 11:48:42,640 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 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 11:48:42,640 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions.
[2022-01-10 11:48:42,641 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 14
[2022-01-10 11:48:42,641 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 11:48:42,641 INFO  L470      AbstractCegarLoop]: Abstraction has 25 states and 25 transitions.
[2022-01-10 11:48:42,641 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 11:48:42,641 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions.
[2022-01-10 11:48:42,641 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-01-10 11:48:42,641 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 11:48:42,642 INFO  L514         BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1]
[2022-01-10 11:48:42,655 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 11:48:42,845 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 11:48:42,846 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 11:48:42,846 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 11:48:42,846 INFO  L85        PathProgramCache]: Analyzing trace with hash 491392792, now seen corresponding path program 3 times
[2022-01-10 11:48:42,846 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 11:48:42,847 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157317069]
[2022-01-10 11:48:42,847 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 11:48:42,847 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 11:48:42,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 11:48:43,051 INFO  L134       CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 11:48:43,052 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 11:48:43,052 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157317069]
[2022-01-10 11:48:43,052 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157317069] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 11:48:43,052 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723794598]
[2022-01-10 11:48:43,052 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 11:48:43,052 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 11:48:43,052 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 11:48:43,064 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 11:48:43,065 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 11:48:43,454 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2022-01-10 11:48:43,454 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 11:48:43,456 INFO  L263         TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 37 conjunts are in the unsatisfiable core
[2022-01-10 11:48:43,457 INFO  L286         TraceCheckSpWp]: Computing forward predicates...