/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound5.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 02:41:45,660 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 02:41:45,661 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 02:41:45,726 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 02:41:45,726 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 02:41:45,729 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 02:41:45,731 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 02:41:45,736 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
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[2022-01-11 02:41:45,737 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-11 02:41:45,738 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 02:41:45,739 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 02:41:45,739 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 02:41:45,740 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 02:41:45,740 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 02:41:45,741 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 02:41:45,742 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 02:41:45,743 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 02:41:45,743 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 02:41:45,744 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 02:41:45,745 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 02:41:45,745 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 02:41:45,747 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 02:41:45,747 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 02:41:45,747 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 02:41:45,747 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 02:41:45,748 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 02:41:45,748 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 02:41:45,749 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 02:41:45,749 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 02:41:45,749 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 02:41:45,750 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 02:41:45,750 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 02:41:45,751 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 02:41:45,751 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 02:41:45,751 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 02:41:45,752 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-11 02:41:45,753 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 02:41:45,753 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf
[2022-01-11 02:41:45,770 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 02:41:45,771 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 02:41:45,771 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 02:41:45,771 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 02:41:45,772 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 02:41:45,772 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 02:41:45,772 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 02:41:45,772 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 02:41:45,773 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 02:41:45,773 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 02:41:45,773 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 02:41:45,773 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 02:41:45,773 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 02:41:45,773 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 02:41:45,774 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 02:41:45,774 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 02:41:45,774 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 02:41:45,774 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 02:41:45,774 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 02:41:45,774 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 02:41:45,775 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 02:41:45,775 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:41:45,780 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 02:41:45,780 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 02:41:45,780 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 02:41:45,780 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 02:41:45,780 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 02:41:45,780 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 02:41:45,781 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 02:41:45,781 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 02:41:45,781 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 02:41:45,781 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 02:41:45,782 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 02:41:45,782 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_SUM
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 02:41:45,925 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 02:41:45,941 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 02:41:45,943 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 02:41:45,944 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 02:41:45,944 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 02:41:45,945 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound5.c
[2022-01-11 02:41:45,993 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af78e237d/264bcd7844e543acb3ed2a258eee7327/FLAG1b840c379
[2022-01-11 02:41:46,325 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 02:41:46,325 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound5.c
[2022-01-11 02:41:46,333 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af78e237d/264bcd7844e543acb3ed2a258eee7327/FLAG1b840c379
[2022-01-11 02:41:46,341 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af78e237d/264bcd7844e543acb3ed2a258eee7327
[2022-01-11 02:41:46,345 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 02:41:46,347 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 02:41:46,349 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 02:41:46,349 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 02:41:46,351 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 02:41:46,351 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,352 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5492d541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46, skipping insertion in model container
[2022-01-11 02:41:46,352 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,356 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 02:41:46,368 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 02:41:46,475 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound5.c[537,550]
[2022-01-11 02:41:46,496 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:41:46,502 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 02:41:46,514 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound5.c[537,550]
[2022-01-11 02:41:46,517 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:41:46,525 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 02:41:46,525 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46 WrapperNode
[2022-01-11 02:41:46,525 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 02:41:46,526 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 02:41:46,526 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 02:41:46,526 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 02:41:46,535 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,539 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,554 INFO  L137                Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 80
[2022-01-11 02:41:46,555 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 02:41:46,555 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 02:41:46,555 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 02:41:46,555 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 02:41:46,560 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,560 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,561 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,561 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,564 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,566 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,567 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,568 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 02:41:46,569 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 02:41:46,569 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 02:41:46,569 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 02:41:46,572 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,577 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:41:46,585 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:41:46,594 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-11 02:41:46,599 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-11 02:41:46,617 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 02:41:46,618 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 02:41:46,618 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 02:41:46,618 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 02:41:46,658 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 02:41:46,659 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 02:41:46,816 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 02:41:46,820 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 02:41:46,821 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-11 02:41:46,822 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:41:46 BoogieIcfgContainer
[2022-01-11 02:41:46,822 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 02:41:46,822 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 02:41:46,822 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 02:41:46,823 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 02:41:46,825 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:41:46" (1/1) ...
[2022-01-11 02:41:46,886 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:41:46 BasicIcfg
[2022-01-11 02:41:46,886 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 02:41:46,887 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 02:41:46,887 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 02:41:46,889 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 02:41:46,889 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:41:46" (1/4) ...
[2022-01-11 02:41:46,890 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9b86fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:41:46, skipping insertion in model container
[2022-01-11 02:41:46,890 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:41:46" (2/4) ...
[2022-01-11 02:41:46,890 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9b86fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:41:46, skipping insertion in model container
[2022-01-11 02:41:46,890 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:41:46" (3/4) ...
[2022-01-11 02:41:46,890 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9b86fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:41:46, skipping insertion in model container
[2022-01-11 02:41:46,890 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:41:46" (4/4) ...
[2022-01-11 02:41:46,891 INFO  L111   eAbstractionObserver]: Analyzing ICFG lcm2_valuebound5.cTransformedIcfg
[2022-01-11 02:41:46,894 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 02:41:46,894 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2022-01-11 02:41:46,920 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 02:41:46,924 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-11 02:41:46,925 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-01-11 02:41:46,933 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 29 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:46,936 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-11 02:41:46,936 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:41:46,936 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:41:46,937 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:41:46,940 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:41:46,940 INFO  L85        PathProgramCache]: Analyzing trace with hash 1717401675, now seen corresponding path program 1 times
[2022-01-11 02:41:46,945 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:41:46,946 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312209606]
[2022-01-11 02:41:46,946 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:46,946 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:41:47,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:41:47,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:41:47,044 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:41:47,044 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312209606]
[2022-01-11 02:41:47,045 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312209606] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:41:47,045 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:41:47,045 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-11 02:41:47,046 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978998062]
[2022-01-11 02:41:47,046 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:41:47,049 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-11 02:41:47,049 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:41:47,065 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-11 02:41:47,066 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 02:41:47,067 INFO  L87              Difference]: Start difference. First operand  has 29 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:47,076 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:41:47,076 INFO  L93              Difference]: Finished difference Result 55 states and 76 transitions.
[2022-01-11 02:41:47,077 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-11 02:41:47,078 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 17
[2022-01-11 02:41:47,078 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:41:47,082 INFO  L225             Difference]: With dead ends: 55
[2022-01-11 02:41:47,082 INFO  L226             Difference]: Without dead ends: 25
[2022-01-11 02:41:47,084 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 02:41:47,086 INFO  L933         BasicCegarLoop]: 30 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, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-11 02:41:47,087 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 02:41:47,097 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-11 02:41:47,104 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2022-01-11 02:41:47,105 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:47,106 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions.
[2022-01-11 02:41:47,107 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 17
[2022-01-11 02:41:47,107 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:41:47,107 INFO  L470      AbstractCegarLoop]: Abstraction has 25 states and 26 transitions.
[2022-01-11 02:41:47,108 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:47,108 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions.
[2022-01-11 02:41:47,109 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-11 02:41:47,109 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:41:47,109 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:41:47,110 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 02:41:47,110 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:41:47,112 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:41:47,112 INFO  L85        PathProgramCache]: Analyzing trace with hash 214648336, now seen corresponding path program 1 times
[2022-01-11 02:41:47,112 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:41:47,113 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299538828]
[2022-01-11 02:41:47,113 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:47,113 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:41:47,170 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:41:47,170 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557625474]
[2022-01-11 02:41:47,170 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:47,170 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:41:47,170 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:41:47,187 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:41:47,223 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-11 02:41:47,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:41:47,270 INFO  L263         TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-01-11 02:41:47,277 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:41:47,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:41:47,869 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-11 02:41:47,869 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:41:47,870 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299538828]
[2022-01-11 02:41:47,870 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:41:47,873 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557625474]
[2022-01-11 02:41:47,873 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557625474] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:41:47,873 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:41:47,873 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2022-01-11 02:41:47,874 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124314292]
[2022-01-11 02:41:47,874 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:41:47,876 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-01-11 02:41:47,876 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:41:47,876 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-01-11 02:41:47,877 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2022-01-11 02:41:47,878 INFO  L87              Difference]: Start difference. First operand 25 states and 26 transitions. Second operand  has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:48,203 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:41:48,203 INFO  L93              Difference]: Finished difference Result 36 states and 38 transitions.
[2022-01-11 02:41:48,204 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2022-01-11 02:41:48,204 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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 17
[2022-01-11 02:41:48,204 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:41:48,205 INFO  L225             Difference]: With dead ends: 36
[2022-01-11 02:41:48,205 INFO  L226             Difference]: Without dead ends: 30
[2022-01-11 02:41:48,206 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342
[2022-01-11 02:41:48,206 INFO  L933         BasicCegarLoop]: 8 mSDtfsCounter, 115 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 02:41:48,207 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 21 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-11 02:41:48,207 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2022-01-11 02:41:48,210 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29.
[2022-01-11 02:41:48,210 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:48,211 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions.
[2022-01-11 02:41:48,211 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17
[2022-01-11 02:41:48,211 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:41:48,211 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 30 transitions.
[2022-01-11 02:41:48,211 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:48,211 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions.
[2022-01-11 02:41:48,212 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-01-11 02:41:48,212 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:41:48,212 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:41:48,228 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-11 02:41:48,425 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:41:48,426 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:41:48,426 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:41:48,426 INFO  L85        PathProgramCache]: Analyzing trace with hash 138745669, now seen corresponding path program 1 times
[2022-01-11 02:41:48,426 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:41:48,427 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334614936]
[2022-01-11 02:41:48,427 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:48,427 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:41:48,459 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:41:48,459 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530846617]
[2022-01-11 02:41:48,460 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:48,461 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:41:48,461 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:41:48,464 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:41:48,466 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-11 02:41:48,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:41:48,661 INFO  L263         TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 42 conjunts are in the unsatisfiable core
[2022-01-11 02:41:48,663 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:41:49,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:41:49,111 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:41:49,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:41:49,328 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:41:49,328 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334614936]
[2022-01-11 02:41:49,329 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:41:49,329 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530846617]
[2022-01-11 02:41:49,329 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [530846617] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:41:49,329 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-11 02:41:49,329 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 15
[2022-01-11 02:41:49,329 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832603007]
[2022-01-11 02:41:49,329 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:41:49,329 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-11 02:41:49,329 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:41:49,330 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-11 02:41:49,330 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2022-01-11 02:41:49,330 INFO  L87              Difference]: Start difference. First operand 29 states and 30 transitions. Second operand  has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:52,685 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:41:54,706 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:41:56,750 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:41:56,750 INFO  L93              Difference]: Finished difference Result 48 states and 54 transitions.
[2022-01-11 02:41:56,750 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2022-01-11 02:41:56,750 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 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 22
[2022-01-11 02:41:56,751 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:41:56,751 INFO  L225             Difference]: With dead ends: 48
[2022-01-11 02:41:56,751 INFO  L226             Difference]: Without dead ends: 40
[2022-01-11 02:41:56,752 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650
[2022-01-11 02:41:56,752 INFO  L933         BasicCegarLoop]: 8 mSDtfsCounter, 118 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 88 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2022-01-11 02:41:56,752 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 29 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 101 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time]
[2022-01-11 02:41:56,753 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2022-01-11 02:41:56,756 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39.
[2022-01-11 02:41:56,756 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39 states, 37 states have (on average 1.135135135135135) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:56,756 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions.
[2022-01-11 02:41:56,757 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 22
[2022-01-11 02:41:56,757 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:41:56,757 INFO  L470      AbstractCegarLoop]: Abstraction has 39 states and 42 transitions.
[2022-01-11 02:41:56,757 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:56,757 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions.
[2022-01-11 02:41:56,757 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-01-11 02:41:56,757 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:41:56,758 INFO  L514         BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:41:56,765 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-11 02:41:56,960 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,SelfDestructingSolverStorable2
[2022-01-11 02:41:56,960 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:41:56,961 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:41:56,961 INFO  L85        PathProgramCache]: Analyzing trace with hash -470048112, now seen corresponding path program 1 times
[2022-01-11 02:41:56,961 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:41:56,961 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910798611]
[2022-01-11 02:41:56,961 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:56,961 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:41:56,988 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:41:56,988 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480721678]
[2022-01-11 02:41:56,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:56,988 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:41:56,988 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:41:56,996 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:41:56,997 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-11 02:41:57,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:41:57,222 INFO  L263         TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 47 conjunts are in the unsatisfiable core
[2022-01-11 02:41:57,223 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:41:58,116 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:41:58,117 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:42:04,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:42:04,522 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:42:04,522 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910798611]
[2022-01-11 02:42:04,523 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:42:04,523 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480721678]
[2022-01-11 02:42:04,523 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [480721678] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:42:04,523 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-11 02:42:04,523 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 21
[2022-01-11 02:42:04,523 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348297036]
[2022-01-11 02:42:04,523 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:42:04,523 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-01-11 02:42:04,523 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:42:04,524 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-01-11 02:42:04,524 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420
[2022-01-11 02:42:04,524 INFO  L87              Difference]: Start difference. First operand 39 states and 42 transitions. Second operand  has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:42:09,936 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:11,939 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:13,945 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:15,948 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:17,952 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:20,186 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:22,200 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:24,203 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:30,449 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:32,453 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:34,456 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:40,422 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:42,425 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:44,428 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:42:44,629 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:42:44,629 INFO  L93              Difference]: Finished difference Result 67 states and 76 transitions.
[2022-01-11 02:42:44,630 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2022-01-11 02:42:44,630 INFO  L78                 Accepts]: Start accepts. Automaton has  has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 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) Word has length 27
[2022-01-11 02:42:44,630 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:42:44,631 INFO  L225             Difference]: With dead ends: 67
[2022-01-11 02:42:44,631 INFO  L226             Difference]: Without dead ends: 59
[2022-01-11 02:42:44,631 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=475, Invalid=1007, Unknown=0, NotChecked=0, Total=1482
[2022-01-11 02:42:44,632 INFO  L933         BasicCegarLoop]: 10 mSDtfsCounter, 113 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 78 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time
[2022-01-11 02:42:44,632 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 64 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 252 Invalid, 14 Unknown, 0 Unchecked, 31.3s Time]
[2022-01-11 02:42:44,634 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2022-01-11 02:42:44,639 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49.
[2022-01-11 02:42:44,639 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49 states, 47 states have (on average 1.148936170212766) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:42:44,639 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions.
[2022-01-11 02:42:44,639 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 27
[2022-01-11 02:42:44,640 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:42:44,640 INFO  L470      AbstractCegarLoop]: Abstraction has 49 states and 54 transitions.
[2022-01-11 02:42:44,640 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:42:44,640 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions.
[2022-01-11 02:42:44,640 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-01-11 02:42:44,640 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:42:44,640 INFO  L514         BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:42:44,647 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-01-11 02:42:44,844 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:42:44,845 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:42:44,845 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:42:44,845 INFO  L85        PathProgramCache]: Analyzing trace with hash -1858550140, now seen corresponding path program 1 times
[2022-01-11 02:42:44,845 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:42:44,845 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660637174]
[2022-01-11 02:42:44,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:42:44,846 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:42:44,857 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:42:44,857 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125331582]
[2022-01-11 02:42:44,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:42:44,857 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:42:44,857 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:42:44,859 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:42:44,860 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-01-11 02:42:45,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:42:45,199 INFO  L263         TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 46 conjunts are in the unsatisfiable core
[2022-01-11 02:42:45,200 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:42:52,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:42:52,544 INFO  L328         TraceCheckSpWp]: Computing backward predicates...