/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/lcm1_valuebound20.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 02:40:27,395 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 02:40:27,397 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 02:40:27,434 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 02:40:27,435 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 02:40:27,437 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 02:40:27,439 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 02:40:27,442 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-11 02:40:27,443 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-11 02:40:27,446 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-11 02:40:27,448 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 02:40:27,448 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 02:40:27,450 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 02:40:27,452 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 02:40:27,454 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 02:40:27,455 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 02:40:27,455 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 02:40:27,456 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 02:40:27,460 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 02:40:27,461 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 02:40:27,462 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 02:40:27,463 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 02:40:27,463 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 02:40:27,468 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 02:40:27,468 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 02:40:27,468 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 02:40:27,469 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 02:40:27,469 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 02:40:27,470 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 02:40:27,470 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 02:40:27,470 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 02:40:27,472 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 02:40:27,472 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 02:40:27,473 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 02:40:27,473 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 02:40:27,473 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 02:40:27,474 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 02:40:27,474 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-11 02:40:27,474 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-11 02:40:27,475 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 02:40:27,475 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 02:40:27,502 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 02:40:27,502 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 02:40:27,503 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 02:40:27,503 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 02:40:27,504 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 02:40:27,504 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 02:40:27,504 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 02:40:27,504 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 02:40:27,504 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 02:40:27,504 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 02:40:27,505 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 02:40:27,505 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 02:40:27,505 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 02:40:27,505 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 02:40:27,505 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 02:40:27,505 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 02:40:27,505 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 02:40:27,505 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 02:40:27,505 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 02:40:27,506 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 02:40:27,506 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 02:40:27,506 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:40:27,507 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 02:40:27,507 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 02:40:27,507 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 02:40:27,507 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 02:40:27,507 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 02:40:27,507 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 02:40:27,507 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 02:40:27,507 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 02:40:27,507 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 02:40:27,507 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 02:40:27,508 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 02:40:27,508 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 02:40:27,686 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 02:40:27,712 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 02:40:27,714 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 02:40:27,715 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 02:40:27,716 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 02:40:27,717 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c
[2022-01-11 02:40:27,755 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e4a6620/c6bfe4e262c242d6aa3416bc25c283b8/FLAG1ee7cf7c1
[2022-01-11 02:40:28,109 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 02:40:28,110 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c
[2022-01-11 02:40:28,117 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e4a6620/c6bfe4e262c242d6aa3416bc25c283b8/FLAG1ee7cf7c1
[2022-01-11 02:40:28,531 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e4a6620/c6bfe4e262c242d6aa3416bc25c283b8
[2022-01-11 02:40:28,532 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 02:40:28,533 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 02:40:28,535 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 02:40:28,535 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 02:40:28,537 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 02:40:28,537 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,538 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4823ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28, skipping insertion in model container
[2022-01-11 02:40:28,538 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,545 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 02:40:28,566 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 02:40:28,676 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/lcm1_valuebound20.c[552,565]
[2022-01-11 02:40:28,701 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:40:28,712 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 02:40:28,750 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/lcm1_valuebound20.c[552,565]
[2022-01-11 02:40:28,761 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:40:28,769 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 02:40:28,769 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28 WrapperNode
[2022-01-11 02:40:28,769 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 02:40:28,770 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 02:40:28,770 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 02:40:28,770 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 02:40:28,776 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,789 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,808 INFO  L137                Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 109
[2022-01-11 02:40:28,809 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 02:40:28,809 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 02:40:28,809 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 02:40:28,809 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 02:40:28,814 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,814 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,818 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,818 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,831 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,835 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,838 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,839 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 02:40:28,840 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 02:40:28,840 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 02:40:28,840 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 02:40:28,842 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (1/1) ...
[2022-01-11 02:40:28,847 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:40:28,853 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:40:28,889 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 02:40:28,913 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 02:40:28,918 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 02:40:28,918 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 02:40:28,918 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 02:40:28,919 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 02:40:28,954 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 02:40:28,955 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 02:40:29,201 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 02:40:29,206 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 02:40:29,206 INFO  L299             CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-11 02:40:29,207 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:40:29 BoogieIcfgContainer
[2022-01-11 02:40:29,207 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 02:40:29,208 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 02:40:29,208 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 02:40:29,209 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 02:40:29,211 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:40:29" (1/1) ...
[2022-01-11 02:40:29,267 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:40:29 BasicIcfg
[2022-01-11 02:40:29,267 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 02:40:29,268 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 02:40:29,268 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 02:40:29,269 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 02:40:29,281 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:40:28" (1/4) ...
[2022-01-11 02:40:29,282 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcb2b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:40:29, skipping insertion in model container
[2022-01-11 02:40:29,282 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:40:28" (2/4) ...
[2022-01-11 02:40:29,282 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcb2b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:40:29, skipping insertion in model container
[2022-01-11 02:40:29,282 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:40:29" (3/4) ...
[2022-01-11 02:40:29,282 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcb2b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:40:29, skipping insertion in model container
[2022-01-11 02:40:29,282 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:40:29" (4/4) ...
[2022-01-11 02:40:29,283 INFO  L111   eAbstractionObserver]: Analyzing ICFG lcm1_valuebound20.cTransformedIcfg
[2022-01-11 02:40:29,286 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 02:40:29,286 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations.
[2022-01-11 02:40:29,311 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 02:40:29,315 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 02:40:29,316 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2022-01-11 02:40:29,340 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 44 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 43 states have internal predecessors, (63), 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 02:40:29,343 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-11 02:40:29,343 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:40:29,344 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 02:40:29,345 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:40:29,352 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:40:29,352 INFO  L85        PathProgramCache]: Analyzing trace with hash -571069561, now seen corresponding path program 1 times
[2022-01-11 02:40:29,357 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:40:29,358 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971562351]
[2022-01-11 02:40:29,358 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:40:29,358 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:40:29,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:40:29,508 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 02:40:29,508 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:40:29,508 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971562351]
[2022-01-11 02:40:29,509 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971562351] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:40:29,509 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:40:29,510 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-11 02:40:29,511 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856788627]
[2022-01-11 02:40:29,511 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:40:29,514 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-11 02:40:29,514 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:40:29,535 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-11 02:40:29,536 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 02:40:29,537 INFO  L87              Difference]: Start difference. First operand  has 44 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 43 states have internal predecessors, (63), 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 02:40:29,557 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:40:29,558 INFO  L93              Difference]: Finished difference Result 85 states and 122 transitions.
[2022-01-11 02:40:29,558 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-11 02:40:29,559 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 02:40:29,560 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:40:29,564 INFO  L225             Difference]: With dead ends: 85
[2022-01-11 02:40:29,564 INFO  L226             Difference]: Without dead ends: 40
[2022-01-11 02:40:29,566 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 02:40:29,569 INFO  L933         BasicCegarLoop]: 46 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, 46 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 02:40:29,570 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 02:40:29,581 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2022-01-11 02:40:29,594 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2022-01-11 02:40:29,595 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40 states, 35 states have (on average 1.2) internal successors, (42), 39 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 02:40:29,596 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions.
[2022-01-11 02:40:29,597 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 17
[2022-01-11 02:40:29,597 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:40:29,598 INFO  L470      AbstractCegarLoop]: Abstraction has 40 states and 42 transitions.
[2022-01-11 02:40:29,598 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 02:40:29,599 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions.
[2022-01-11 02:40:29,599 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-11 02:40:29,599 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:40:29,600 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 02:40:29,600 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 02:40:29,601 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:40:29,602 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:40:29,602 INFO  L85        PathProgramCache]: Analyzing trace with hash -1779496372, now seen corresponding path program 1 times
[2022-01-11 02:40:29,603 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:40:29,603 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304747195]
[2022-01-11 02:40:29,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:40:29,603 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:40:29,640 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:40:29,641 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305350540]
[2022-01-11 02:40:29,641 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:40:29,641 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:40:29,641 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:40:29,648 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 02:40:29,666 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 02:40:29,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:40:29,758 INFO  L263         TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-01-11 02:40:29,762 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:40:30,294 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 02:40:30,294 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-11 02:40:30,294 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:40:30,295 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304747195]
[2022-01-11 02:40:30,295 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:40:30,298 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305350540]
[2022-01-11 02:40:30,298 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [305350540] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:40:30,298 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:40:30,298 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-11 02:40:30,299 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649964388]
[2022-01-11 02:40:30,300 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:40:30,302 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-11 02:40:30,302 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:40:30,302 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-11 02:40:30,303 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2022-01-11 02:40:30,303 INFO  L87              Difference]: Start difference. First operand 40 states and 42 transitions. Second operand  has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 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 02:40:30,586 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:40:30,586 INFO  L93              Difference]: Finished difference Result 67 states and 71 transitions.
[2022-01-11 02:40:30,586 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-11 02:40:30,586 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 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 02:40:30,587 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:40:30,587 INFO  L225             Difference]: With dead ends: 67
[2022-01-11 02:40:30,587 INFO  L226             Difference]: Without dead ends: 61
[2022-01-11 02:40:30,588 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240
[2022-01-11 02:40:30,588 INFO  L933         BasicCegarLoop]: 17 mSDtfsCounter, 171 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 02:40:30,589 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 44 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-11 02:40:30,589 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2022-01-11 02:40:30,593 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52.
[2022-01-11 02:40:30,593 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 52 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 51 states have internal predecessors, (57), 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 02:40:30,594 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions.
[2022-01-11 02:40:30,594 INFO  L78                 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 17
[2022-01-11 02:40:30,594 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:40:30,594 INFO  L470      AbstractCegarLoop]: Abstraction has 52 states and 57 transitions.
[2022-01-11 02:40:30,594 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 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 02:40:30,595 INFO  L276                IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions.
[2022-01-11 02:40:30,595 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-01-11 02:40:30,595 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:40:30,595 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:40:30,623 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 02:40:30,815 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 02:40:30,815 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:40:30,816 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:40:30,816 INFO  L85        PathProgramCache]: Analyzing trace with hash -1716375385, now seen corresponding path program 1 times
[2022-01-11 02:40:30,816 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:40:30,816 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618372111]
[2022-01-11 02:40:30,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:40:30,817 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:40:30,838 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:40:30,838 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790139286]
[2022-01-11 02:40:30,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:40:30,839 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:40:30,839 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:40:30,840 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 02:40:30,869 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 02:40:30,909 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:40:30,911 INFO  L263         TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-01-11 02:40:30,912 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:40:31,090 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 02:40:31,090 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-11 02:40:31,090 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:40:31,090 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618372111]
[2022-01-11 02:40:31,090 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:40:31,091 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790139286]
[2022-01-11 02:40:31,091 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [790139286] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:40:31,091 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:40:31,091 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-01-11 02:40:31,091 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140208109]
[2022-01-11 02:40:31,091 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:40:31,091 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-11 02:40:31,091 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:40:31,092 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-11 02:40:31,092 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2022-01-11 02:40:31,092 INFO  L87              Difference]: Start difference. First operand 52 states and 57 transitions. Second operand  has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 02:40:33,114 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 02:40:40,932 WARN  L228               SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 33 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-11 02:40:43,675 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:40:53,433 WARN  L228               SmtUtils]: Spent 9.75s on a formula simplification. DAG size of input: 32 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-11 02:40:54,739 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:40:56,876 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:40:58,880 WARN  L534   Checker$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 02:41:00,447 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:41:00,447 INFO  L93              Difference]: Finished difference Result 95 states and 105 transitions.
[2022-01-11 02:41:00,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-01-11 02:41:00,447 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 21
[2022-01-11 02:41:00,448 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:41:00,448 INFO  L225             Difference]: With dead ends: 95
[2022-01-11 02:41:00,448 INFO  L226             Difference]: Without dead ends: 87
[2022-01-11 02:41:00,449 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110
[2022-01-11 02:41:00,449 INFO  L933         BasicCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 27 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time
[2022-01-11 02:41:00,449 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 128 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 109 Invalid, 4 Unknown, 0 Unchecked, 11.9s Time]
[2022-01-11 02:41:00,450 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2022-01-11 02:41:00,456 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80.
[2022-01-11 02:41:00,456 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 80 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 79 states have internal predecessors, (92), 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 02:41:00,457 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions.
[2022-01-11 02:41:00,457 INFO  L78                 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 21
[2022-01-11 02:41:00,457 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:41:00,457 INFO  L470      AbstractCegarLoop]: Abstraction has 80 states and 92 transitions.
[2022-01-11 02:41:00,457 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 02:41:00,457 INFO  L276                IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions.
[2022-01-11 02:41:00,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-01-11 02:41:00,458 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:41:00,458 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:41:00,493 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-11 02:41:00,660 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 02:41:00,661 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:41:00,661 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:41:00,661 INFO  L85        PathProgramCache]: Analyzing trace with hash -169265523, now seen corresponding path program 1 times
[2022-01-11 02:41:00,661 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:41:00,661 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676132622]
[2022-01-11 02:41:00,661 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:00,661 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:41:00,690 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:41:00,691 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703440757]
[2022-01-11 02:41:00,691 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:00,691 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:41:00,691 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:41:00,712 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 02:41:00,713 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 02:41:00,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:41:00,763 INFO  L263         TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-01-11 02:41:00,764 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:41:00,795 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 02:41:00,795 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-11 02:41:00,795 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:41:00,795 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676132622]
[2022-01-11 02:41:00,795 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:41:00,796 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703440757]
[2022-01-11 02:41:00,797 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703440757] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:41:00,797 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:41:00,797 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-11 02:41:00,797 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844149147]
[2022-01-11 02:41:00,797 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:41:00,798 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-11 02:41:00,798 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:41:00,798 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-11 02:41:00,798 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-11 02:41:00,798 INFO  L87              Difference]: Start difference. First operand 80 states and 92 transitions. Second operand  has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 02:41:00,843 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:41:00,844 INFO  L93              Difference]: Finished difference Result 81 states and 93 transitions.
[2022-01-11 02:41:00,844 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-11 02:41:00,844 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 23
[2022-01-11 02:41:00,844 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:41:00,847 INFO  L225             Difference]: With dead ends: 81
[2022-01-11 02:41:00,847 INFO  L226             Difference]: Without dead ends: 75
[2022-01-11 02:41:00,847 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-11 02:41:00,849 INFO  L933         BasicCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-11 02:41:00,850 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 81 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 02:41:00,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2022-01-11 02:41:00,864 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74.
[2022-01-11 02:41:00,866 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 74 states, 70 states have (on average 1.2) internal successors, (84), 73 states have internal predecessors, (84), 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 02:41:00,868 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions.
[2022-01-11 02:41:00,868 INFO  L78                 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 23
[2022-01-11 02:41:00,868 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:41:00,869 INFO  L470      AbstractCegarLoop]: Abstraction has 74 states and 84 transitions.
[2022-01-11 02:41:00,870 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 02:41:00,870 INFO  L276                IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions.
[2022-01-11 02:41:00,870 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-01-11 02:41:00,871 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:41:00,871 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, 1, 1, 1]
[2022-01-11 02:41:00,891 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-01-11 02:41:01,088 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 02:41:01,089 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:41:01,089 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:41:01,089 INFO  L85        PathProgramCache]: Analyzing trace with hash 816419945, now seen corresponding path program 1 times
[2022-01-11 02:41:01,089 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:41:01,089 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909611597]
[2022-01-11 02:41:01,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:01,089 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:41:01,102 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:41:01,103 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422598552]
[2022-01-11 02:41:01,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:01,103 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:41:01,103 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:41:01,104 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 02:41:01,105 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 02:41:01,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:41:01,839 INFO  L263         TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 42 conjunts are in the unsatisfiable core
[2022-01-11 02:41:01,840 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:41:02,536 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 02:41:02,536 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:41:04,532 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 02:41:04,532 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:41:04,532 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909611597]
[2022-01-11 02:41:04,532 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:41:04,532 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422598552]
[2022-01-11 02:41:04,533 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422598552] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:41:04,533 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-11 02:41:04,533 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 15
[2022-01-11 02:41:04,533 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514594676]
[2022-01-11 02:41:04,533 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:41:04,533 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-11 02:41:04,533 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:41:04,534 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-11 02:41:04,534 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2022-01-11 02:41:04,534 INFO  L87              Difference]: Start difference. First operand 74 states and 84 transitions. Second operand  has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:08,249 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:41:10,299 WARN  L534   Checker$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 02:41:12,302 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:41:16,894 WARN  L534   Checker$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 02:41:18,898 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 02:41:18,907 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:41:18,907 INFO  L93              Difference]: Finished difference Result 129 states and 147 transitions.
[2022-01-11 02:41:18,908 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2022-01-11 02:41:18,908 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25
[2022-01-11 02:41:18,908 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:41:18,909 INFO  L225             Difference]: With dead ends: 129
[2022-01-11 02:41:18,909 INFO  L226             Difference]: Without dead ends: 123
[2022-01-11 02:41:18,910 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=237, Invalid=465, Unknown=0, NotChecked=0, Total=702
[2022-01-11 02:41:18,910 INFO  L933         BasicCegarLoop]: 18 mSDtfsCounter, 177 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 82 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time
[2022-01-11 02:41:18,910 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 67 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 172 Invalid, 5 Unknown, 0 Unchecked, 11.5s Time]
[2022-01-11 02:41:18,911 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2022-01-11 02:41:18,919 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 96.
[2022-01-11 02:41:18,919 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 96 states, 92 states have (on average 1.1956521739130435) internal successors, (110), 95 states have internal predecessors, (110), 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 02:41:18,920 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions.
[2022-01-11 02:41:18,920 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 25
[2022-01-11 02:41:18,920 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:41:18,920 INFO  L470      AbstractCegarLoop]: Abstraction has 96 states and 110 transitions.
[2022-01-11 02:41:18,920 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:41:18,920 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions.
[2022-01-11 02:41:18,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2022-01-11 02:41:18,921 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:41:18,921 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:41:18,929 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-01-11 02:41:19,121 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:41:19,122 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:41:19,122 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:41:19,122 INFO  L85        PathProgramCache]: Analyzing trace with hash 1998703169, now seen corresponding path program 1 times
[2022-01-11 02:41:19,122 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:41:19,122 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651982701]
[2022-01-11 02:41:19,122 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:19,123 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:41:19,136 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:41:19,136 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279003292]
[2022-01-11 02:41:19,136 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:41:19,136 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:41:19,136 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:41:19,159 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:41:19,160 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-01-11 02:41:19,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:41:19,344 INFO  L263         TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-01-11 02:41:19,345 INFO  L286         TraceCheckSpWp]: Computing forward predicates...