/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/ps4-ll_unwindbound5.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 02:46:46,194 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 02:46:46,196 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 02:46:46,273 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 02:46:46,274 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 02:46:46,277 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 02:46:46,280 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 02:46:46,283 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-11 02:46:46,284 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-11 02:46:46,288 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-11 02:46:46,291 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 02:46:46,291 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 02:46:46,292 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 02:46:46,294 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 02:46:46,296 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 02:46:46,297 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 02:46:46,298 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 02:46:46,300 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 02:46:46,305 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 02:46:46,306 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 02:46:46,307 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 02:46:46,308 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 02:46:46,309 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 02:46:46,315 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 02:46:46,316 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 02:46:46,316 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 02:46:46,318 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 02:46:46,318 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 02:46:46,319 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 02:46:46,319 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 02:46:46,319 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 02:46:46,321 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 02:46:46,322 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 02:46:46,323 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 02:46:46,323 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 02:46:46,324 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 02:46:46,324 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 02:46:46,324 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-11 02:46:46,325 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-11 02:46:46,325 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 02:46:46,326 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 02:46:46,356 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 02:46:46,357 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 02:46:46,357 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 02:46:46,357 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 02:46:46,358 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 02:46:46,359 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 02:46:46,359 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 02:46:46,359 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 02:46:46,359 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 02:46:46,359 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 02:46:46,360 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 02:46:46,360 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 02:46:46,360 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 02:46:46,360 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 02:46:46,360 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 02:46:46,361 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 02:46:46,361 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 02:46:46,361 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 02:46:46,361 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 02:46:46,361 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 02:46:46,362 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 02:46:46,362 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:46:46,362 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 02:46:46,362 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 02:46:46,363 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 02:46:46,363 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 02:46:46,363 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 02:46:46,363 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 02:46:46,363 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 02:46:46,363 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 02:46:46,363 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 02:46:46,364 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 02:46:46,364 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 02:46:46,364 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 02:46:46,601 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 02:46:46,624 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 02:46:46,626 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 02:46:46,627 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 02:46:46,629 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 02:46:46,630 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound5.c
[2022-01-11 02:46:46,686 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4c726c8/d8c3039144114377b0b216320a4c64f7/FLAGf7c9809fe
[2022-01-11 02:46:47,099 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 02:46:47,100 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound5.c
[2022-01-11 02:46:47,112 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4c726c8/d8c3039144114377b0b216320a4c64f7/FLAGf7c9809fe
[2022-01-11 02:46:47,130 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4c726c8/d8c3039144114377b0b216320a4c64f7
[2022-01-11 02:46:47,133 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 02:46:47,135 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 02:46:47,139 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 02:46:47,139 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 02:46:47,144 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 02:46:47,145 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,146 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe41e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47, skipping insertion in model container
[2022-01-11 02:46:47,146 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,152 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 02:46:47,165 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 02:46:47,348 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/ps4-ll_unwindbound5.c[458,471]
[2022-01-11 02:46:47,373 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:46:47,388 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 02:46:47,401 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/ps4-ll_unwindbound5.c[458,471]
[2022-01-11 02:46:47,424 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:46:47,436 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 02:46:47,437 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47 WrapperNode
[2022-01-11 02:46:47,437 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 02:46:47,438 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 02:46:47,439 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 02:46:47,439 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 02:46:47,444 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,451 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,469 INFO  L137                Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 53
[2022-01-11 02:46:47,469 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 02:46:47,470 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 02:46:47,470 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 02:46:47,470 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 02:46:47,477 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,477 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,488 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,488 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,498 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,501 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,502 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,504 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 02:46:47,504 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 02:46:47,504 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 02:46:47,505 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 02:46:47,509 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (1/1) ...
[2022-01-11 02:46:47,515 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:46:47,524 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:46:47,556 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 02:46:47,575 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 02:46:47,602 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 02:46:47,602 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 02:46:47,602 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 02:46:47,602 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 02:46:47,661 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 02:46:47,662 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 02:46:48,373 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 02:46:48,378 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 02:46:48,378 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-11 02:46:48,379 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:46:48 BoogieIcfgContainer
[2022-01-11 02:46:48,379 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 02:46:48,382 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 02:46:48,382 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 02:46:48,383 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 02:46:48,385 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:46:48" (1/1) ...
[2022-01-11 02:46:48,454 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:46:48 BasicIcfg
[2022-01-11 02:46:48,454 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 02:46:48,455 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 02:46:48,455 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 02:46:48,458 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 02:46:48,458 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:46:47" (1/4) ...
[2022-01-11 02:46:48,459 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5ee60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:46:48, skipping insertion in model container
[2022-01-11 02:46:48,459 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:46:47" (2/4) ...
[2022-01-11 02:46:48,459 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5ee60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:46:48, skipping insertion in model container
[2022-01-11 02:46:48,459 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:46:48" (3/4) ...
[2022-01-11 02:46:48,460 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5ee60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:46:48, skipping insertion in model container
[2022-01-11 02:46:48,460 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:46:48" (4/4) ...
[2022-01-11 02:46:48,461 INFO  L111   eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound5.cTransformedIcfg
[2022-01-11 02:46:48,465 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 02:46:48,465 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations.
[2022-01-11 02:46:48,508 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 02:46:48,517 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 02:46:48,517 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2022-01-11 02:46:48,531 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 21 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:46:48,535 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-11 02:46:48,536 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:46:48,536 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-11 02:46:48,537 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:46:48,541 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:46:48,541 INFO  L85        PathProgramCache]: Analyzing trace with hash -1690635992, now seen corresponding path program 1 times
[2022-01-11 02:46:48,548 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:46:48,549 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397483739]
[2022-01-11 02:46:48,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:46:48,550 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:46:48,639 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:46:48,683 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 02:46:48,685 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:46:48,685 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397483739]
[2022-01-11 02:46:48,686 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397483739] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:46:48,686 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:46:48,686 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-11 02:46:48,688 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871087780]
[2022-01-11 02:46:48,689 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:46:48,693 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-11 02:46:48,693 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:46:48,724 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-11 02:46:48,726 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 02:46:48,728 INFO  L87              Difference]: Start difference. First operand  has 21 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:46:48,743 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:46:48,743 INFO  L93              Difference]: Finished difference Result 40 states and 50 transitions.
[2022-01-11 02:46:48,744 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-11 02:46:48,745 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2022-01-11 02:46:48,746 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:46:48,751 INFO  L225             Difference]: With dead ends: 40
[2022-01-11 02:46:48,752 INFO  L226             Difference]: Without dead ends: 17
[2022-01-11 02:46:48,754 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 02:46:48,758 INFO  L933         BasicCegarLoop]: 22 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, 22 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 02:46:48,759 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 02:46:48,773 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-01-11 02:46:48,785 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2022-01-11 02:46:48,786 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 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 02:46:48,787 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions.
[2022-01-11 02:46:48,788 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 6
[2022-01-11 02:46:48,788 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:46:48,788 INFO  L470      AbstractCegarLoop]: Abstraction has 17 states and 18 transitions.
[2022-01-11 02:46:48,788 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:46:48,788 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions.
[2022-01-11 02:46:48,789 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-11 02:46:48,789 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:46:48,789 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-11 02:46:48,789 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 02:46:48,789 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:46:48,790 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:46:48,790 INFO  L85        PathProgramCache]: Analyzing trace with hash -1690604214, now seen corresponding path program 1 times
[2022-01-11 02:46:48,790 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:46:48,791 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450774076]
[2022-01-11 02:46:48,791 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:46:48,791 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:46:48,812 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:46:48,813 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930914877]
[2022-01-11 02:46:48,813 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:46:48,813 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:46:48,813 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:46:48,815 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 02:46:48,816 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 02:46:48,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:46:48,874 INFO  L263         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-11 02:46:48,878 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:46:49,197 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 02:46:49,197 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-11 02:46:49,198 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:46:49,198 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450774076]
[2022-01-11 02:46:49,198 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:46:49,198 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930914877]
[2022-01-11 02:46:49,198 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930914877] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:46:49,199 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:46:49,199 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-11 02:46:49,199 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818178755]
[2022-01-11 02:46:49,200 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:46:49,200 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-11 02:46:49,200 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:46:49,201 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-11 02:46:49,201 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-11 02:46:49,201 INFO  L87              Difference]: Start difference. First operand 17 states and 18 transitions. Second operand  has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:46:49,485 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:46:49,485 INFO  L93              Difference]: Finished difference Result 33 states and 35 transitions.
[2022-01-11 02:46:49,486 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-11 02:46:49,487 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2022-01-11 02:46:49,487 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:46:49,487 INFO  L225             Difference]: With dead ends: 33
[2022-01-11 02:46:49,487 INFO  L226             Difference]: Without dead ends: 22
[2022-01-11 02:46:49,488 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-11 02:46:49,489 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-11 02:46:49,490 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 35 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-11 02:46:49,491 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-01-11 02:46:49,496 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2022-01-11 02:46:49,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 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 02:46:49,497 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2022-01-11 02:46:49,497 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 6
[2022-01-11 02:46:49,497 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:46:49,498 INFO  L470      AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2022-01-11 02:46:49,498 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:46:49,498 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2022-01-11 02:46:49,498 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-11 02:46:49,498 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:46:49,499 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:46:49,524 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-11 02:46:49,718 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 02:46:49,719 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:46:49,719 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:46:49,719 INFO  L85        PathProgramCache]: Analyzing trace with hash -320923125, now seen corresponding path program 1 times
[2022-01-11 02:46:49,719 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:46:49,720 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153825032]
[2022-01-11 02:46:49,720 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:46:49,720 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:46:49,744 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:46:49,744 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932854870]
[2022-01-11 02:46:49,744 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:46:49,744 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:46:49,745 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:46:49,752 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 02:46:49,756 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 02:46:49,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:46:49,906 INFO  L263         TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core
[2022-01-11 02:46:49,908 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:46:55,863 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:46:55,863 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:46:57,262 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-11 02:46:57,262 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:46:57,263 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153825032]
[2022-01-11 02:46:57,263 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:46:57,263 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932854870]
[2022-01-11 02:46:57,264 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932854870] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:46:57,264 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-11 02:46:57,264 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6
[2022-01-11 02:46:57,264 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370140114]
[2022-01-11 02:46:57,264 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:46:57,264 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-11 02:46:57,265 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:46:57,265 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-11 02:46:57,265 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-01-11 02:46:57,266 INFO  L87              Difference]: Start difference. First operand 22 states and 23 transitions. Second operand  has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 02:46:57,996 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:46:57,996 INFO  L93              Difference]: Finished difference Result 33 states and 37 transitions.
[2022-01-11 02:46:57,996 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-11 02:46:57,997 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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
[2022-01-11 02:46:57,997 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:46:57,997 INFO  L225             Difference]: With dead ends: 33
[2022-01-11 02:46:57,997 INFO  L226             Difference]: Without dead ends: 25
[2022-01-11 02:46:57,998 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2022-01-11 02:46:57,999 INFO  L933         BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-11 02:46:57,999 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 30 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-11 02:46:58,000 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-11 02:46:58,003 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16.
[2022-01-11 02:46:58,003 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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 02:46:58,004 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2022-01-11 02:46:58,004 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11
[2022-01-11 02:46:58,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:46:58,004 INFO  L470      AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2022-01-11 02:46:58,004 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 02:46:58,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2022-01-11 02:46:58,005 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-11 02:46:58,005 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:46:58,005 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:46:58,012 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 02:46:58,205 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 02:46:58,206 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:46:58,206 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:46:58,207 INFO  L85        PathProgramCache]: Analyzing trace with hash -1358717027, now seen corresponding path program 1 times
[2022-01-11 02:46:58,207 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:46:58,207 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362652068]
[2022-01-11 02:46:58,207 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:46:58,207 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:46:58,222 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:46:58,222 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615887560]
[2022-01-11 02:46:58,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:46:58,222 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:46:58,222 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:46:58,229 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 02:46:58,230 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 02:46:58,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:46:58,372 INFO  L263         TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-11 02:46:58,373 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:46:58,625 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 02:46:58,625 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:46:58,738 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 02:46:58,738 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:46:58,739 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362652068]
[2022-01-11 02:46:58,739 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:46:58,739 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615887560]
[2022-01-11 02:46:58,739 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615887560] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:46:58,739 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-11 02:46:58,739 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2022-01-11 02:46:58,739 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161579926]
[2022-01-11 02:46:58,740 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:46:58,740 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-11 02:46:58,740 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:46:58,740 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-11 02:46:58,741 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2022-01-11 02:46:58,741 INFO  L87              Difference]: Start difference. First operand 16 states and 17 transitions. Second operand  has 8 states, 8 states have (on average 2.625) 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 02:46:59,342 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:46:59,343 INFO  L93              Difference]: Finished difference Result 40 states and 43 transitions.
[2022-01-11 02:46:59,343 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-11 02:46:59,344 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.625) 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 12
[2022-01-11 02:46:59,344 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:46:59,344 INFO  L225             Difference]: With dead ends: 40
[2022-01-11 02:46:59,344 INFO  L226             Difference]: Without dead ends: 36
[2022-01-11 02:46:59,345 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2022-01-11 02:46:59,346 INFO  L933         BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-11 02:46:59,346 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 49 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-11 02:46:59,347 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-01-11 02:46:59,353 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28.
[2022-01-11 02:46:59,354 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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 02:46:59,355 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2022-01-11 02:46:59,355 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12
[2022-01-11 02:46:59,355 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:46:59,355 INFO  L470      AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2022-01-11 02:46:59,355 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.625) 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 02:46:59,355 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2022-01-11 02:46:59,356 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-11 02:46:59,356 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:46:59,357 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:46:59,363 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-01-11 02:46:59,563 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 02:46:59,563 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:46:59,564 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:46:59,564 INFO  L85        PathProgramCache]: Analyzing trace with hash -699263583, now seen corresponding path program 1 times
[2022-01-11 02:46:59,564 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:46:59,564 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402954471]
[2022-01-11 02:46:59,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:46:59,565 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:46:59,580 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:46:59,581 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637625123]
[2022-01-11 02:46:59,581 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:46:59,581 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:46:59,581 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:46:59,582 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 02:46:59,583 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 02:46:59,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:46:59,933 INFO  L263         TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 17 conjunts are in the unsatisfiable core
[2022-01-11 02:46:59,937 INFO  L286         TraceCheckSpWp]: Computing forward predicates...