/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound1.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 20:32:15,366 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 20:32:15,368 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 20:32:15,429 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 20:32:15,430 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 20:32:15,430 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 20:32:15,431 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 20:32:15,440 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 20:32:15,442 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 20:32:15,443 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 20:32:15,443 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 20:32:15,444 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 20:32:15,445 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 20:32:15,448 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 20:32:15,451 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 20:32:15,451 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 20:32:15,453 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 20:32:15,454 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 20:32:15,454 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 20:32:15,459 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 20:32:15,460 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 20:32:15,460 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 20:32:15,460 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 20:32:15,460 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 20:32:15,461 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 20:32:15,461 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 20:32:15,461 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 20:32:15,462 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 20:32:15,462 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 20:32:15,463 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 20:32:15,463 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 20:32:15,463 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 20:32:15,463 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 20:32:15,464 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 20:32:15,464 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 20:32:15,468 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 20:32:15,498 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 20:32:15,499 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 20:32:15,499 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 20:32:15,499 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 20:32:15,499 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 20:32:15,500 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 20:32:15,500 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 20:32:15,500 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 20:32:15,500 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 20:32:15,500 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 20:32:15,500 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 20:32:15,500 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 20:32:15,500 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 20:32:15,500 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 20:32:15,500 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 20:32:15,500 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 20:32:15,501 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 20:32:15,501 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 20:32:15,501 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 20:32:15,501 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 20:32:15,501 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 20:32:15,501 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:32:15,501 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 20:32:15,501 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 20:32:15,501 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 20:32:15,501 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 20:32:15,501 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 20:32:15,501 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 20:32:15,502 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 20:32:15,502 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 20:32:15,502 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 20:32:15,502 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 20:32:15,502 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 20:32:15,502 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 20:32:15,708 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 20:32:15,726 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 20:32:15,728 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 20:32:15,729 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 20:32:15,729 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 20:32:15,730 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound1.c
[2022-01-10 20:32:15,781 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43412476/63ccf68e1d3947078ae4b9148f948d68/FLAGc296ccb81
[2022-01-10 20:32:16,147 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 20:32:16,148 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound1.c
[2022-01-10 20:32:16,156 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43412476/63ccf68e1d3947078ae4b9148f948d68/FLAGc296ccb81
[2022-01-10 20:32:16,167 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43412476/63ccf68e1d3947078ae4b9148f948d68
[2022-01-10 20:32:16,169 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 20:32:16,170 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 20:32:16,173 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 20:32:16,173 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 20:32:16,175 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 20:32:16,176 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,176 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f3dcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16, skipping insertion in model container
[2022-01-10 20:32:16,176 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,181 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 20:32:16,192 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 20:32:16,318 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/cohendiv-ll_valuebound1.c[576,589]
[2022-01-10 20:32:16,328 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:32:16,335 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 20:32:16,342 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/cohendiv-ll_valuebound1.c[576,589]
[2022-01-10 20:32:16,347 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:32:16,355 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 20:32:16,356 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16 WrapperNode
[2022-01-10 20:32:16,356 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 20:32:16,356 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 20:32:16,357 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 20:32:16,357 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 20:32:16,361 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,366 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,378 INFO  L137                Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 98
[2022-01-10 20:32:16,378 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 20:32:16,379 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 20:32:16,379 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 20:32:16,379 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 20:32:16,384 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,384 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,386 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,386 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,389 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,392 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,393 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,394 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 20:32:16,395 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 20:32:16,395 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 20:32:16,395 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 20:32:16,396 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (1/1) ...
[2022-01-10 20:32:16,406 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:32:16,414 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:32:16,436 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 20:32:16,449 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 20:32:16,469 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 20:32:16,469 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 20:32:16,469 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 20:32:16,469 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 20:32:16,513 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 20:32:16,514 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 20:32:17,022 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 20:32:17,026 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 20:32:17,026 INFO  L299             CfgBuilder]: Removed 2 assume(true) statements.
[2022-01-10 20:32:17,027 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:32:17 BoogieIcfgContainer
[2022-01-10 20:32:17,028 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 20:32:17,028 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 20:32:17,028 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 20:32:17,029 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 20:32:17,031 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:32:17" (1/1) ...
[2022-01-10 20:32:17,128 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:32:17 BasicIcfg
[2022-01-10 20:32:17,128 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 20:32:17,129 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 20:32:17,129 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 20:32:17,140 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 20:32:17,140 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:32:16" (1/4) ...
[2022-01-10 20:32:17,141 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bee238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:32:17, skipping insertion in model container
[2022-01-10 20:32:17,141 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:32:16" (2/4) ...
[2022-01-10 20:32:17,141 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bee238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:32:17, skipping insertion in model container
[2022-01-10 20:32:17,141 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:32:17" (3/4) ...
[2022-01-10 20:32:17,141 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bee238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:32:17, skipping insertion in model container
[2022-01-10 20:32:17,142 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:32:17" (4/4) ...
[2022-01-10 20:32:17,142 INFO  L111   eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound1.cTransformedIcfg
[2022-01-10 20:32:17,145 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 20:32:17,145 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations.
[2022-01-10 20:32:17,182 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 20:32:17,186 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 20:32:17,187 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2022-01-10 20:32:17,195 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 45 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 44 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:17,198 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 20:32:17,198 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:32:17,199 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:32:17,199 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-01-10 20:32:17,202 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:32:17,203 INFO  L85        PathProgramCache]: Analyzing trace with hash -1484681195, now seen corresponding path program 1 times
[2022-01-10 20:32:17,208 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:32:17,208 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443903221]
[2022-01-10 20:32:17,208 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:17,209 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:32:17,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:32:17,321 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:32:17,321 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:32:17,321 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443903221]
[2022-01-10 20:32:17,322 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443903221] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:32:17,322 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:32:17,323 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 20:32:17,324 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104679967]
[2022-01-10 20:32:17,324 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:32:17,327 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 20:32:17,327 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:32:17,348 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 20:32:17,349 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 20:32:17,351 INFO  L87              Difference]: Start difference. First operand  has 45 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 44 states have internal predecessors, (60), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:17,366 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:32:17,367 INFO  L93              Difference]: Finished difference Result 87 states and 116 transitions.
[2022-01-10 20:32:17,367 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 20:32:17,368 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11
[2022-01-10 20:32:17,368 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:32:17,373 INFO  L225             Difference]: With dead ends: 87
[2022-01-10 20:32:17,373 INFO  L226             Difference]: Without dead ends: 41
[2022-01-10 20:32:17,376 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 20:32:17,378 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
[2022-01-10 20:32:17,379 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]
[2022-01-10 20:32:17,390 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2022-01-10 20:32:17,404 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2022-01-10 20:32:17,405 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 40 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)
[2022-01-10 20:32:17,407 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions.
[2022-01-10 20:32:17,408 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11
[2022-01-10 20:32:17,408 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:32:17,408 INFO  L470      AbstractCegarLoop]: Abstraction has 41 states and 42 transitions.
[2022-01-10 20:32:17,408 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:17,409 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions.
[2022-01-10 20:32:17,410 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 20:32:17,410 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:32:17,410 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:32:17,410 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 20:32:17,411 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-01-10 20:32:17,411 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:32:17,411 INFO  L85        PathProgramCache]: Analyzing trace with hash 1891258840, now seen corresponding path program 1 times
[2022-01-10 20:32:17,412 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:32:17,412 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748278876]
[2022-01-10 20:32:17,412 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:17,412 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:32:17,464 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 20:32:17,464 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336219477]
[2022-01-10 20:32:17,464 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:17,464 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:32:17,465 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:32:17,479 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 20:32:17,481 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 20:32:17,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:32:17,572 INFO  L263         TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-10 20:32:17,576 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:32:17,677 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:32:17,677 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 20:32:17,677 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:32:17,677 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748278876]
[2022-01-10 20:32:17,677 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 20:32:17,678 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336219477]
[2022-01-10 20:32:17,678 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [336219477] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:32:17,678 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:32:17,678 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 20:32:17,678 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006876959]
[2022-01-10 20:32:17,679 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:32:17,679 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 20:32:17,679 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:32:17,680 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 20:32:17,680 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 20:32:17,680 INFO  L87              Difference]: Start difference. First operand 41 states and 42 transitions. Second operand  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:17,792 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:32:17,792 INFO  L93              Difference]: Finished difference Result 55 states and 56 transitions.
[2022-01-10 20:32:17,793 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 20:32:17,793 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11
[2022-01-10 20:32:17,793 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:32:17,793 INFO  L225             Difference]: With dead ends: 55
[2022-01-10 20:32:17,794 INFO  L226             Difference]: Without dead ends: 53
[2022-01-10 20:32:17,794 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 20:32:17,795 INFO  L933         BasicCegarLoop]: 41 mSDtfsCounter, 22 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 20:32:17,795 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 89 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 20:32:17,796 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2022-01-10 20:32:17,799 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43.
[2022-01-10 20:32:17,799 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 43 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:17,799 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions.
[2022-01-10 20:32:17,799 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 11
[2022-01-10 20:32:17,800 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:32:17,800 INFO  L470      AbstractCegarLoop]: Abstraction has 43 states and 44 transitions.
[2022-01-10 20:32:17,800 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:17,800 INFO  L276                IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions.
[2022-01-10 20:32:17,800 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 20:32:17,800 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:32:17,800 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:32:17,808 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-10 20:32:18,008 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
[2022-01-10 20:32:18,008 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-01-10 20:32:18,009 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:32:18,009 INFO  L85        PathProgramCache]: Analyzing trace with hash 728616028, now seen corresponding path program 1 times
[2022-01-10 20:32:18,009 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:32:18,009 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052896828]
[2022-01-10 20:32:18,009 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:18,010 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:32:18,038 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 20:32:18,039 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55710664]
[2022-01-10 20:32:18,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:18,039 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:32:18,039 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:32:18,049 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 20:32:18,054 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 20:32:18,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:32:18,143 INFO  L263         TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-01-10 20:32:18,146 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:32:18,501 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:32:18,502 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 20:32:18,502 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:32:18,502 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052896828]
[2022-01-10 20:32:18,502 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 20:32:18,502 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55710664]
[2022-01-10 20:32:18,502 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [55710664] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:32:18,502 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:32:18,502 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-10 20:32:18,503 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35445828]
[2022-01-10 20:32:18,503 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:32:18,503 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 20:32:18,503 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:32:18,504 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 20:32:18,504 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-01-10 20:32:18,504 INFO  L87              Difference]: Start difference. First operand 43 states and 44 transitions. Second operand  has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:19,140 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:32:19,140 INFO  L93              Difference]: Finished difference Result 72 states and 74 transitions.
[2022-01-10 20:32:19,140 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-01-10 20:32:19,140 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 13
[2022-01-10 20:32:19,141 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:32:19,141 INFO  L225             Difference]: With dead ends: 72
[2022-01-10 20:32:19,141 INFO  L226             Difference]: Without dead ends: 62
[2022-01-10 20:32:19,142 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2022-01-10 20:32:19,142 INFO  L933         BasicCegarLoop]: 27 mSDtfsCounter, 135 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-10 20:32:19,143 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 67 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-10 20:32:19,143 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2022-01-10 20:32:19,156 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57.
[2022-01-10 20:32:19,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 57 states, 50 states have (on average 1.22) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:19,157 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions.
[2022-01-10 20:32:19,157 INFO  L78                 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 13
[2022-01-10 20:32:19,157 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:32:19,157 INFO  L470      AbstractCegarLoop]: Abstraction has 57 states and 61 transitions.
[2022-01-10 20:32:19,158 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:19,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions.
[2022-01-10 20:32:19,159 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-10 20:32:19,159 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:32:19,159 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:32:19,179 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 20:32:19,363 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
[2022-01-10 20:32:19,363 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-01-10 20:32:19,364 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:32:19,364 INFO  L85        PathProgramCache]: Analyzing trace with hash -287664862, now seen corresponding path program 1 times
[2022-01-10 20:32:19,365 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:32:19,366 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482062426]
[2022-01-10 20:32:19,366 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:19,367 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:32:19,399 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 20:32:19,400 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645878383]
[2022-01-10 20:32:19,400 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:19,400 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:32:19,400 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:32:19,407 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 20:32:19,457 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-10 20:32:19,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:32:19,527 INFO  L263         TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 21 conjunts are in the unsatisfiable core
[2022-01-10 20:32:19,529 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:32:19,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:32:19,851 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 20:32:19,852 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:32:19,852 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482062426]
[2022-01-10 20:32:19,852 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 20:32:19,852 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645878383]
[2022-01-10 20:32:19,852 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [645878383] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:32:19,852 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:32:19,852 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-01-10 20:32:19,852 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919233531]
[2022-01-10 20:32:19,852 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:32:19,853 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-10 20:32:19,853 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:32:19,853 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-10 20:32:19,853 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2022-01-10 20:32:19,853 INFO  L87              Difference]: Start difference. First operand 57 states and 61 transitions. Second operand  has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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)
[2022-01-10 20:32:20,150 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:32:20,150 INFO  L93              Difference]: Finished difference Result 100 states and 108 transitions.
[2022-01-10 20:32:20,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-10 20:32:20,151 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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
[2022-01-10 20:32:20,151 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:32:20,152 INFO  L225             Difference]: With dead ends: 100
[2022-01-10 20:32:20,152 INFO  L226             Difference]: Without dead ends: 94
[2022-01-10 20:32:20,152 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182
[2022-01-10 20:32:20,153 INFO  L933         BasicCegarLoop]: 27 mSDtfsCounter, 162 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-10 20:32:20,153 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 66 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-10 20:32:20,153 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2022-01-10 20:32:20,165 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78.
[2022-01-10 20:32:20,166 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 78 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 77 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:20,168 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions.
[2022-01-10 20:32:20,169 INFO  L78                 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 17
[2022-01-10 20:32:20,169 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:32:20,169 INFO  L470      AbstractCegarLoop]: Abstraction has 78 states and 86 transitions.
[2022-01-10 20:32:20,169 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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)
[2022-01-10 20:32:20,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions.
[2022-01-10 20:32:20,169 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-01-10 20:32:20,169 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:32:20,169 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, 1, 1]
[2022-01-10 20:32:20,175 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-01-10 20:32:20,374 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
[2022-01-10 20:32:20,374 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-01-10 20:32:20,375 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:32:20,375 INFO  L85        PathProgramCache]: Analyzing trace with hash 1361271542, now seen corresponding path program 1 times
[2022-01-10 20:32:20,375 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:32:20,375 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734854410]
[2022-01-10 20:32:20,375 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:20,375 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:32:20,390 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 20:32:20,391 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589440098]
[2022-01-10 20:32:20,391 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:20,391 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:32:20,391 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:32:20,411 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)
[2022-01-10 20:32:20,412 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-01-10 20:32:20,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:32:20,547 INFO  L263         TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 21 conjunts are in the unsatisfiable core
[2022-01-10 20:32:20,550 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:32:53,241 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:32:53,241 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 20:32:53,241 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:32:53,241 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734854410]
[2022-01-10 20:32:53,241 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 20:32:53,242 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589440098]
[2022-01-10 20:32:53,242 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [589440098] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:32:53,242 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:32:53,242 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-10 20:32:53,242 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970841492]
[2022-01-10 20:32:53,242 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:32:53,242 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-10 20:32:53,242 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:32:53,243 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-10 20:32:53,243 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2022-01-10 20:32:53,243 INFO  L87              Difference]: Start difference. First operand 78 states and 86 transitions. Second operand  has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:53,432 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:32:53,432 INFO  L93              Difference]: Finished difference Result 123 states and 135 transitions.
[2022-01-10 20:32:53,433 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-10 20:32:53,433 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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
[2022-01-10 20:32:53,434 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:32:53,434 INFO  L225             Difference]: With dead ends: 123
[2022-01-10 20:32:53,434 INFO  L226             Difference]: Without dead ends: 67
[2022-01-10 20:32:53,435 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182
[2022-01-10 20:32:53,435 INFO  L933         BasicCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 20:32:53,435 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 157 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time]
[2022-01-10 20:32:53,436 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2022-01-10 20:32:53,443 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67.
[2022-01-10 20:32:53,443 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 67 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:53,444 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions.
[2022-01-10 20:32:53,444 INFO  L78                 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 27
[2022-01-10 20:32:53,444 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:32:53,444 INFO  L470      AbstractCegarLoop]: Abstraction has 67 states and 71 transitions.
[2022-01-10 20:32:53,444 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:32:53,444 INFO  L276                IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions.
[2022-01-10 20:32:53,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-01-10 20:32:53,445 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:32:53,445 INFO  L514         BasicCegarLoop]: trace histogram [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]
[2022-01-10 20:32:53,451 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-01-10 20:32:53,649 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
[2022-01-10 20:32:53,649 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-01-10 20:32:53,650 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:32:53,650 INFO  L85        PathProgramCache]: Analyzing trace with hash 2070160168, now seen corresponding path program 1 times
[2022-01-10 20:32:53,650 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:32:53,650 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79714926]
[2022-01-10 20:32:53,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:53,650 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:32:53,677 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 20:32:53,678 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974010830]
[2022-01-10 20:32:53,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:32:53,678 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:32:53,678 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:32:53,687 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)
[2022-01-10 20:32:53,688 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-01-10 20:32:53,875 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:32:53,880 INFO  L263         TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 44 conjunts are in the unsatisfiable core
[2022-01-10 20:32:53,883 INFO  L286         TraceCheckSpWp]: Computing forward predicates...