/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv3.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 20:21:21,083 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 20:21:21,085 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 20:21:21,131 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 20:21:21,132 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 20:21:21,132 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 20:21:21,133 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 20:21:21,136 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 20:21:21,138 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 20:21:21,139 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 20:21:21,140 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 20:21:21,141 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 20:21:21,141 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 20:21:21,142 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 20:21:21,143 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 20:21:21,144 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 20:21:21,144 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 20:21:21,145 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 20:21:21,146 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 20:21:21,146 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 20:21:21,148 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 20:21:21,148 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 20:21:21,148 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 20:21:21,149 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 20:21:21,149 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 20:21:21,149 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 20:21:21,149 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 20:21:21,150 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 20:21:21,150 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 20:21:21,151 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 20:21:21,151 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 20:21:21,151 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 20:21:21,152 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2022-01-10 20:21:21,152 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 20:21:21,153 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 20:21:21,161 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 20:21:21,186 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 20:21:21,186 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 20:21:21,186 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 20:21:21,186 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 20:21:21,187 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 20:21:21,187 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 20:21:21,187 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 20:21:21,187 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 20:21:21,187 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 20:21:21,188 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 20:21:21,188 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 20:21:21,189 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:21:21,189 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 20:21:21,189 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 20:21:21,189 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 20:21:21,189 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 20:21:21,189 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 20:21:21,189 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 20:21:21,189 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 20:21:21,189 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 20:21:21,189 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 20:21:21,189 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 20:21:21,190 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 20:21:21,190 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 20:21:21,352 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 20:21:21,370 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 20:21:21,373 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 20:21:21,374 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 20:21:21,374 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 20:21:21,375 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv3.c
[2022-01-10 20:21:21,424 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d1c6206/73cc5a6b559e4141955e0e690eec9123/FLAGca2a51df7
[2022-01-10 20:21:21,773 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 20:21:21,773 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c
[2022-01-10 20:21:21,777 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d1c6206/73cc5a6b559e4141955e0e690eec9123/FLAGca2a51df7
[2022-01-10 20:21:21,785 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d1c6206/73cc5a6b559e4141955e0e690eec9123
[2022-01-10 20:21:21,787 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 20:21:21,788 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 20:21:21,789 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 20:21:21,789 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 20:21:21,791 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 20:21:21,791 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:21,792 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc21751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21, skipping insertion in model container
[2022-01-10 20:21:21,792 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:21,796 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 20:21:21,805 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 20:21:21,930 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469]
[2022-01-10 20:21:21,944 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:21:21,951 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 20:21:21,960 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469]
[2022-01-10 20:21:21,964 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:21:21,974 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 20:21:21,974 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21 WrapperNode
[2022-01-10 20:21:21,974 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 20:21:21,976 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 20:21:21,976 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 20:21:21,976 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 20:21:21,981 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:21,986 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:21,997 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34
[2022-01-10 20:21:21,997 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 20:21:21,998 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 20:21:21,998 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 20:21:21,998 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 20:21:22,003 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:22,003 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:22,005 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:22,006 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:22,013 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:22,016 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:22,020 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:22,024 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 20:21:22,025 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 20:21:22,025 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 20:21:22,025 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 20:21:22,026 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (1/1) ...
[2022-01-10 20:21:22,030 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:21:22,038 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:21:22,047 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 20:21:22,065 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 20:21:22,073 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 20:21:22,073 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 20:21:22,073 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 20:21:22,074 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 20:21:22,115 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 20:21:22,116 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 20:21:22,235 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 20:21:22,239 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 20:21:22,239 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 20:21:22,240 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:21:22 BoogieIcfgContainer
[2022-01-10 20:21:22,240 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 20:21:22,241 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 20:21:22,241 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 20:21:22,242 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 20:21:22,244 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:21:22" (1/1) ...
[2022-01-10 20:21:22,320 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:21:22 BasicIcfg
[2022-01-10 20:21:22,320 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 20:21:22,321 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 20:21:22,321 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 20:21:22,323 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 20:21:22,324 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:21:21" (1/4) ...
[2022-01-10 20:21:22,324 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371556e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:21:22, skipping insertion in model container
[2022-01-10 20:21:22,324 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:21" (2/4) ...
[2022-01-10 20:21:22,324 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371556e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:21:22, skipping insertion in model container
[2022-01-10 20:21:22,324 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:21:22" (3/4) ...
[2022-01-10 20:21:22,325 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371556e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:21:22, skipping insertion in model container
[2022-01-10 20:21:22,325 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:21:22" (4/4) ...
[2022-01-10 20:21:22,325 INFO  L111   eAbstractionObserver]: Analyzing ICFG loopv3.cTransformedIcfg
[2022-01-10 20:21:22,329 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 20:21:22,329 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 20:21:22,377 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 20:21:22,381 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 20:21:22,381 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 20:21:22,395 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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 20:21:22,398 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 20:21:22,398 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:21:22,399 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 20:21:22,399 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:21:22,406 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:21:22,406 INFO  L85        PathProgramCache]: Analyzing trace with hash 1953496263, now seen corresponding path program 1 times
[2022-01-10 20:21:22,412 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:21:22,413 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892681113]
[2022-01-10 20:21:22,413 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:21:22,414 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:21:22,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:21:22,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:21:22,539 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:21:22,540 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892681113]
[2022-01-10 20:21:22,541 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892681113] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:21:22,541 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:21:22,541 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 20:21:22,542 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227798700]
[2022-01-10 20:21:22,543 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:21:22,546 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 20:21:22,546 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:21:22,567 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 20:21:22,568 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 20:21:22,570 INFO  L87              Difference]: Start difference. First operand  has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) 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 20:21:22,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:21:22,579 INFO  L93              Difference]: Finished difference Result 20 states and 23 transitions.
[2022-01-10 20:21:22,580 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 20:21:22,581 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 20:21:22,581 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:21:22,586 INFO  L225             Difference]: With dead ends: 20
[2022-01-10 20:21:22,586 INFO  L226             Difference]: Without dead ends: 8
[2022-01-10 20:21:22,588 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 20:21:22,591 INFO  L933         BasicCegarLoop]: 13 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, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 20:21:22,592 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 20:21:22,603 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2022-01-10 20:21:22,610 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2022-01-10 20:21:22,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 20:21:22,612 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions.
[2022-01-10 20:21:22,613 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6
[2022-01-10 20:21:22,613 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:21:22,613 INFO  L470      AbstractCegarLoop]: Abstraction has 8 states and 9 transitions.
[2022-01-10 20:21:22,613 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 20:21:22,614 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions.
[2022-01-10 20:21:22,615 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 20:21:22,615 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:21:22,615 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 20:21:22,615 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 20:21:22,615 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:21:22,618 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:21:22,618 INFO  L85        PathProgramCache]: Analyzing trace with hash 1953526054, now seen corresponding path program 1 times
[2022-01-10 20:21:22,619 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:21:22,619 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513075863]
[2022-01-10 20:21:22,619 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:21:22,619 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:21:22,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:21:22,740 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:21:22,740 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:21:22,741 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513075863]
[2022-01-10 20:21:22,741 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513075863] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:21:22,741 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:21:22,741 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 20:21:22,741 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674525823]
[2022-01-10 20:21:22,741 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:21:22,742 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 20:21:22,742 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:21:22,743 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 20:21:22,743 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 20:21:22,743 INFO  L87              Difference]: Start difference. First operand 8 states and 9 transitions. Second operand  has 4 states, 4 states have (on average 1.5) 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 20:21:22,780 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:21:22,780 INFO  L93              Difference]: Finished difference Result 14 states and 16 transitions.
[2022-01-10 20:21:22,780 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 20:21:22,780 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.5) 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 20:21:22,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:21:22,782 INFO  L225             Difference]: With dead ends: 14
[2022-01-10 20:21:22,782 INFO  L226             Difference]: Without dead ends: 10
[2022-01-10 20:21:22,782 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 20:21:22,783 INFO  L933         BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 20:21:22,783 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 20:21:22,784 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2022-01-10 20:21:22,786 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2022-01-10 20:21:22,786 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:21:22,786 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions.
[2022-01-10 20:21:22,786 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6
[2022-01-10 20:21:22,787 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:21:22,787 INFO  L470      AbstractCegarLoop]: Abstraction has 9 states and 10 transitions.
[2022-01-10 20:21:22,787 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.5) 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 20:21:22,787 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions.
[2022-01-10 20:21:22,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 20:21:22,787 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:21:22,787 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:21:22,787 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 20:21:22,788 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:21:22,788 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:21:22,788 INFO  L85        PathProgramCache]: Analyzing trace with hash 467229864, now seen corresponding path program 1 times
[2022-01-10 20:21:22,788 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:21:22,788 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085958311]
[2022-01-10 20:21:22,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:21:22,789 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:21:22,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:21:22,929 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:21:22,929 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:21:22,929 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085958311]
[2022-01-10 20:21:22,929 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085958311] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:21:22,929 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263520980]
[2022-01-10 20:21:22,929 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:21:22,930 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:21:22,930 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:21:22,931 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 20:21:22,932 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 20:21:23,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:21:23,013 INFO  L263         TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 20:21:23,017 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:21:23,654 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:21:23,654 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 20:21:23,778 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:21:23,778 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [263520980] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 20:21:23,779 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 20:21:23,779 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10
[2022-01-10 20:21:23,779 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827069232]
[2022-01-10 20:21:23,779 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 20:21:23,779 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-10 20:21:23,779 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:21:23,780 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-10 20:21:23,780 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2022-01-10 20:21:23,780 INFO  L87              Difference]: Start difference. First operand 9 states and 10 transitions. Second operand  has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:21:24,245 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:21:24,246 INFO  L93              Difference]: Finished difference Result 21 states and 29 transitions.
[2022-01-10 20:21:24,246 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-01-10 20:21:24,246 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 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 8
[2022-01-10 20:21:24,247 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:21:24,247 INFO  L225             Difference]: With dead ends: 21
[2022-01-10 20:21:24,247 INFO  L226             Difference]: Without dead ends: 17
[2022-01-10 20:21:24,247 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210
[2022-01-10 20:21:24,248 INFO  L933         BasicCegarLoop]: 4 mSDtfsCounter, 37 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-10 20:21:24,249 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 8 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-10 20:21:24,249 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-01-10 20:21:24,253 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15.
[2022-01-10 20:21:24,253 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:21:24,254 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions.
[2022-01-10 20:21:24,254 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8
[2022-01-10 20:21:24,254 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:21:24,254 INFO  L470      AbstractCegarLoop]: Abstraction has 15 states and 19 transitions.
[2022-01-10 20:21:24,255 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:21:24,255 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions.
[2022-01-10 20:21:24,255 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 20:21:24,255 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:21:24,255 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:21:24,261 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-10 20:21:24,456 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:21:24,456 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:21:24,456 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:21:24,456 INFO  L85        PathProgramCache]: Analyzing trace with hash -443577298, now seen corresponding path program 2 times
[2022-01-10 20:21:24,456 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:21:24,457 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558082377]
[2022-01-10 20:21:24,457 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:21:24,457 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:21:24,519 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:21:24,709 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 20:21:24,709 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:21:24,709 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558082377]
[2022-01-10 20:21:24,709 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558082377] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:21:24,709 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266560628]
[2022-01-10 20:21:24,710 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 20:21:24,710 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:21:24,710 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:21:24,713 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 20:21:24,715 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 20:21:24,802 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 20:21:24,802 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 20:21:24,803 INFO  L263         TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core
[2022-01-10 20:21:24,804 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:21:38,937 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 20:21:38,937 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 20:21:46,919 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 20:21:46,919 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [266560628] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 20:21:46,919 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 20:21:46,920 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18
[2022-01-10 20:21:46,920 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535624174]
[2022-01-10 20:21:46,920 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 20:21:46,920 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-01-10 20:21:46,920 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:21:46,921 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-01-10 20:21:46,921 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=231, Unknown=8, NotChecked=0, Total=342
[2022-01-10 20:21:46,921 INFO  L87              Difference]: Start difference. First operand 15 states and 19 transitions. Second operand  has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:22:07,890 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 20:22:12,438 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:22:12,438 INFO  L93              Difference]: Finished difference Result 46 states and 64 transitions.
[2022-01-10 20:22:12,440 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2022-01-10 20:22:12,440 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 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) Word has length 14
[2022-01-10 20:22:12,440 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:22:12,443 INFO  L225             Difference]: With dead ends: 46
[2022-01-10 20:22:12,443 INFO  L226             Difference]: Without dead ends: 42
[2022-01-10 20:22:12,443 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=251, Invalid=553, Unknown=8, NotChecked=0, Total=812
[2022-01-10 20:22:12,444 INFO  L933         BasicCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2022-01-10 20:22:12,444 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 40 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 99 Invalid, 1 Unknown, 77 Unchecked, 3.5s Time]
[2022-01-10 20:22:12,445 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-01-10 20:22:12,452 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36.
[2022-01-10 20:22:12,452 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 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)
[2022-01-10 20:22:12,452 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions.
[2022-01-10 20:22:12,452 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 14
[2022-01-10 20:22:12,453 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:22:12,453 INFO  L470      AbstractCegarLoop]: Abstraction has 36 states and 51 transitions.
[2022-01-10 20:22:12,453 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:22:12,453 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions.
[2022-01-10 20:22:12,453 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 20:22:12,453 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:22:12,453 INFO  L514         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:22:12,459 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-10 20:22:12,654 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2022-01-10 20:22:12,654 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:22:12,655 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:22:12,655 INFO  L85        PathProgramCache]: Analyzing trace with hash -442653777, now seen corresponding path program 1 times
[2022-01-10 20:22:12,655 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:22:12,655 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922784479]
[2022-01-10 20:22:12,655 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:22:12,655 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:22:12,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:22:12,824 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 20:22:12,824 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:22:12,824 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922784479]
[2022-01-10 20:22:12,825 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922784479] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:22:12,825 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011315622]
[2022-01-10 20:22:12,825 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:22:12,825 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:22:12,825 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:22:12,826 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 20:22:12,830 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-10 20:22:12,935 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:22:12,936 INFO  L263         TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-01-10 20:22:12,937 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:22:24,448 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 20:22:24,449 INFO  L328         TraceCheckSpWp]: Computing backward predicates...