/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_BITWISE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/knuth_valuebound5.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 09:12:03,465 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 09:12:03,467 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 09:12:03,517 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 09:12:03,517 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 09:12:03,520 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 09:12:03,522 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 09:12:03,526 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 09:12:03,527 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 09:12:03,527 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 09:12:03,528 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 09:12:03,528 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 09:12:03,528 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 09:12:03,529 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 09:12:03,530 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 09:12:03,530 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 09:12:03,531 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 09:12:03,531 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 09:12:03,532 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 09:12:03,533 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 09:12:03,534 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 09:12:03,540 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 09:12:03,541 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 09:12:03,542 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 09:12:03,548 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 09:12:03,548 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 09:12:03,548 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 09:12:03,549 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 09:12:03,551 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 09:12:03,552 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 09:12:03,552 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 09:12:03,553 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 09:12:03,553 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 09:12:03,553 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 09:12:03,554 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 09:12:03,554 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 09:12:03,554 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 09:12:03,554 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 09:12:03,555 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 09:12:03,555 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 09:12:03,555 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 09:12:03,556 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf
[2022-01-10 09:12:03,571 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 09:12:03,572 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 09:12:03,572 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 09:12:03,572 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 09:12:03,573 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 09:12:03,573 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 09:12:03,573 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 09:12:03,573 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 09:12:03,573 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 09:12:03,573 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 09:12:03,573 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 09:12:03,573 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 09:12:03,574 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 09:12:03,574 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 09:12:03,574 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 09:12:03,574 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 09:12:03,574 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 09:12:03,574 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 09:12:03,574 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 09:12:03,574 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 09:12:03,574 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 09:12:03,575 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:12:03,575 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 09:12:03,575 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 09:12:03,575 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 09:12:03,575 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 09:12:03,575 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 09:12:03,575 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 09:12:03,576 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 09:12:03,576 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 09:12:03,576 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 09:12:03,576 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 09:12:03,576 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 09:12:03,577 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_BITWISE
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 09:12:03,712 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 09:12:03,734 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 09:12:03,736 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 09:12:03,737 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 09:12:03,740 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 09:12:03,741 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/knuth_valuebound5.i
[2022-01-10 09:12:03,782 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65e08a4b8/60e53b1e1e0d4806b8e16c976938d252/FLAG096bf3cc5
[2022-01-10 09:12:04,124 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 09:12:04,124 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/knuth_valuebound5.i
[2022-01-10 09:12:04,128 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65e08a4b8/60e53b1e1e0d4806b8e16c976938d252/FLAG096bf3cc5
[2022-01-10 09:12:04,541 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65e08a4b8/60e53b1e1e0d4806b8e16c976938d252
[2022-01-10 09:12:04,543 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 09:12:04,544 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 09:12:04,545 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 09:12:04,545 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 09:12:04,550 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 09:12:04,551 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,552 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc304b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04, skipping insertion in model container
[2022-01-10 09:12:04,552 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,560 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 09:12:04,573 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 09:12:04,681 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/knuth_valuebound5.i[948,961]
[2022-01-10 09:12:04,699 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:12:04,705 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 09:12:04,713 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/knuth_valuebound5.i[948,961]
[2022-01-10 09:12:04,723 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:12:04,731 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 09:12:04,731 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04 WrapperNode
[2022-01-10 09:12:04,732 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 09:12:04,732 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 09:12:04,732 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 09:12:04,732 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 09:12:04,737 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,742 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,755 INFO  L137                Inliner]: procedures = 18, calls = 14, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 98
[2022-01-10 09:12:04,756 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 09:12:04,756 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 09:12:04,756 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 09:12:04,756 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 09:12:04,761 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,762 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,765 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,765 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,773 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,776 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,777 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,778 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 09:12:04,779 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 09:12:04,779 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 09:12:04,779 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 09:12:04,780 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (1/1) ...
[2022-01-10 09:12:04,795 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:12:04,803 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:12:04,813 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 09:12:04,820 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 09:12:04,839 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 09:12:04,839 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 09:12:04,839 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 09:12:04,840 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 09:12:04,885 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 09:12:04,886 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 09:12:05,216 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 09:12:05,220 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 09:12:05,221 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 09:12:05,222 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:12:05 BoogieIcfgContainer
[2022-01-10 09:12:05,222 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 09:12:05,222 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 09:12:05,222 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 09:12:05,223 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 09:12:05,225 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:12:05" (1/1) ...
[2022-01-10 09:12:05,282 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:12:05 BasicIcfg
[2022-01-10 09:12:05,283 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 09:12:05,284 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 09:12:05,284 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 09:12:05,287 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 09:12:05,287 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:12:04" (1/4) ...
[2022-01-10 09:12:05,288 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617ed7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:12:05, skipping insertion in model container
[2022-01-10 09:12:05,288 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:12:04" (2/4) ...
[2022-01-10 09:12:05,289 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617ed7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:12:05, skipping insertion in model container
[2022-01-10 09:12:05,289 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:12:05" (3/4) ...
[2022-01-10 09:12:05,289 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617ed7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:12:05, skipping insertion in model container
[2022-01-10 09:12:05,289 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:12:05" (4/4) ...
[2022-01-10 09:12:05,290 INFO  L111   eAbstractionObserver]: Analyzing ICFG knuth_valuebound5.iTransformedIcfg
[2022-01-10 09:12:05,293 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 09:12:05,293 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations.
[2022-01-10 09:12:05,334 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 09:12:05,339 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 09:12:05,339 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2022-01-10 09:12:05,347 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 35 states, 30 states have (on average 1.6) internal successors, (48), 34 states have internal predecessors, (48), 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 09:12:05,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 09:12:05,350 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:12:05,350 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:12:05,350 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] ===
[2022-01-10 09:12:05,353 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:12:05,354 INFO  L85        PathProgramCache]: Analyzing trace with hash 1338451065, now seen corresponding path program 1 times
[2022-01-10 09:12:05,358 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:12:05,359 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51975466]
[2022-01-10 09:12:05,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:12:05,359 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:12:05,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:12:05,472 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 09:12:05,472 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:12:05,472 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51975466]
[2022-01-10 09:12:05,473 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51975466] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:12:05,473 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:12:05,473 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 09:12:05,474 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493140868]
[2022-01-10 09:12:05,475 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:12:05,478 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 09:12:05,478 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:12:05,504 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 09:12:05,505 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 09:12:05,507 INFO  L87              Difference]: Start difference. First operand  has 35 states, 30 states have (on average 1.6) internal successors, (48), 34 states have internal predecessors, (48), 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 6.5) internal successors, (13), 2 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 09:12:05,520 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:12:05,520 INFO  L93              Difference]: Finished difference Result 67 states and 92 transitions.
[2022-01-10 09:12:05,521 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 09:12:05,522 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 09:12:05,522 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:12:05,531 INFO  L225             Difference]: With dead ends: 67
[2022-01-10 09:12:05,532 INFO  L226             Difference]: Without dead ends: 31
[2022-01-10 09:12:05,534 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 09:12:05,537 INFO  L933         BasicCegarLoop]: 38 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, 38 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 09:12:05,538 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:12:05,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-01-10 09:12:05,559 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2022-01-10 09:12:05,560 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:12:05,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions.
[2022-01-10 09:12:05,562 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13
[2022-01-10 09:12:05,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:12:05,563 INFO  L470      AbstractCegarLoop]: Abstraction has 31 states and 34 transitions.
[2022-01-10 09:12:05,563 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 09:12:05,564 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions.
[2022-01-10 09:12:05,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 09:12:05,564 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:12:05,565 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:12:05,565 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 09:12:05,565 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] ===
[2022-01-10 09:12:05,566 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:12:05,566 INFO  L85        PathProgramCache]: Analyzing trace with hash -1377527555, now seen corresponding path program 1 times
[2022-01-10 09:12:05,567 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:12:05,567 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787430179]
[2022-01-10 09:12:05,567 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:12:05,567 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:12:05,604 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 09:12:05,605 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423331129]
[2022-01-10 09:12:05,605 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:12:05,605 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:12:05,606 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:12:05,607 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 09:12:05,608 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 09:12:05,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:12:05,944 INFO  L263         TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 30 conjunts are in the unsatisfiable core
[2022-01-10 09:12:05,949 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:12:06,887 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 09:12:06,887 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 09:12:06,887 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:12:06,887 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787430179]
[2022-01-10 09:12:06,887 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 09:12:06,888 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423331129]
[2022-01-10 09:12:06,888 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423331129] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:12:06,888 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:12:06,888 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-10 09:12:06,889 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185820846]
[2022-01-10 09:12:06,889 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:12:06,889 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-10 09:12:06,889 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:12:06,890 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-10 09:12:06,890 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2022-01-10 09:12:06,890 INFO  L87              Difference]: Start difference. First operand 31 states and 34 transitions. Second operand  has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 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 09:12:11,642 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 09:12:12,109 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:12:12,109 INFO  L93              Difference]: Finished difference Result 52 states and 58 transitions.
[2022-01-10 09:12:12,110 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-10 09:12:12,110 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 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 09:12:12,110 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:12:12,111 INFO  L225             Difference]: With dead ends: 52
[2022-01-10 09:12:12,111 INFO  L226             Difference]: Without dead ends: 50
[2022-01-10 09:12:12,113 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240
[2022-01-10 09:12:12,114 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 145 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2022-01-10 09:12:12,114 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 42 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2022-01-10 09:12:12,115 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-01-10 09:12:12,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 33.
[2022-01-10 09:12:12,119 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 32 states have internal predecessors, (36), 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 09:12:12,120 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions.
[2022-01-10 09:12:12,120 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 13
[2022-01-10 09:12:12,120 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:12:12,120 INFO  L470      AbstractCegarLoop]: Abstraction has 33 states and 36 transitions.
[2022-01-10 09:12:12,120 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 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 09:12:12,120 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions.
[2022-01-10 09:12:12,121 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-10 09:12:12,121 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:12:12,121 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:12:12,129 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-10 09:12:12,321 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 09:12:12,322 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] ===
[2022-01-10 09:12:12,322 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:12:12,322 INFO  L85        PathProgramCache]: Analyzing trace with hash -954017088, now seen corresponding path program 1 times
[2022-01-10 09:12:12,322 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:12:12,322 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152589636]
[2022-01-10 09:12:12,323 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:12:12,323 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:12:12,338 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 09:12:12,338 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402607775]
[2022-01-10 09:12:12,339 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:12:12,339 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:12:12,339 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:12:12,341 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 09:12:12,344 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 09:12:12,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:12:12,431 INFO  L263         TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-01-10 09:12:12,432 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:12:12,480 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 09:12:12,481 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 09:12:12,481 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:12:12,481 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152589636]
[2022-01-10 09:12:12,481 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 09:12:12,481 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402607775]
[2022-01-10 09:12:12,481 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402607775] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:12:12,481 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:12:12,481 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 09:12:12,482 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169205521]
[2022-01-10 09:12:12,482 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:12:12,483 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 09:12:12,483 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:12:12,484 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 09:12:12,484 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 09:12:12,484 INFO  L87              Difference]: Start difference. First operand 33 states and 36 transitions. Second operand  has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:12:12,620 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:12:12,620 INFO  L93              Difference]: Finished difference Result 50 states and 56 transitions.
[2022-01-10 09:12:12,621 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 09:12:12,621 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2022-01-10 09:12:12,621 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:12:12,621 INFO  L225             Difference]: With dead ends: 50
[2022-01-10 09:12:12,622 INFO  L226             Difference]: Without dead ends: 48
[2022-01-10 09:12:12,622 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 09:12:12,622 INFO  L933         BasicCegarLoop]: 31 mSDtfsCounter, 28 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 09:12:12,623 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 09:12:12,623 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2022-01-10 09:12:12,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 35.
[2022-01-10 09:12:12,627 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 35 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 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 09:12:12,627 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions.
[2022-01-10 09:12:12,627 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 15
[2022-01-10 09:12:12,627 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:12:12,627 INFO  L470      AbstractCegarLoop]: Abstraction has 35 states and 38 transitions.
[2022-01-10 09:12:12,628 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:12:12,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions.
[2022-01-10 09:12:12,628 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-10 09:12:12,628 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:12:12,628 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 09:12:12,634 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-10 09:12:12,834 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 09:12:12,834 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] ===
[2022-01-10 09:12:12,835 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:12:12,835 INFO  L85        PathProgramCache]: Analyzing trace with hash -1982351261, now seen corresponding path program 1 times
[2022-01-10 09:12:12,835 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:12:12,835 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551018033]
[2022-01-10 09:12:12,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:12:12,835 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:12:12,851 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 09:12:12,851 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774705178]
[2022-01-10 09:12:12,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:12:12,852 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:12:12,852 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:12:12,856 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 09:12:12,858 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 09:12:12,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:12:12,998 INFO  L263         TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 22 conjunts are in the unsatisfiable core
[2022-01-10 09:12:12,999 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:12:33,400 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 09:12:33,400 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 09:12:33,400 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:12:33,400 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551018033]
[2022-01-10 09:12:33,400 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 09:12:33,400 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774705178]
[2022-01-10 09:12:33,400 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [774705178] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:12:33,400 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:12:33,400 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-10 09:12:33,401 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962724379]
[2022-01-10 09:12:33,401 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:12:33,401 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-10 09:12:33,401 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:12:33,402 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-10 09:12:33,402 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-01-10 09:12:33,402 INFO  L87              Difference]: Start difference. First operand 35 states and 38 transitions. Second operand  has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:12:35,802 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 09:12:42,580 WARN  L228               SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 65 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-10 09:12:54,487 WARN  L228               SmtUtils]: Spent 11.87s on a formula simplification. DAG size of input: 66 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-10 09:12:55,577 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 09:13:03,024 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 09:13:04,087 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:13:04,087 INFO  L93              Difference]: Finished difference Result 48 states and 54 transitions.
[2022-01-10 09:13:04,087 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-10 09:13:04,088 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2022-01-10 09:13:04,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:13:04,088 INFO  L225             Difference]: With dead ends: 48
[2022-01-10 09:13:04,088 INFO  L226             Difference]: Without dead ends: 44
[2022-01-10 09:13:04,088 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240
[2022-01-10 09:13:04,089 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 144 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time
[2022-01-10 09:13:04,089 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 50 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 89 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time]
[2022-01-10 09:13:04,090 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2022-01-10 09:13:04,096 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39.
[2022-01-10 09:13:04,096 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39 states, 35 states have (on average 1.2) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:13:04,096 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions.
[2022-01-10 09:13:04,096 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 17
[2022-01-10 09:13:04,096 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:13:04,097 INFO  L470      AbstractCegarLoop]: Abstraction has 39 states and 42 transitions.
[2022-01-10 09:13:04,097 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:13:04,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions.
[2022-01-10 09:13:04,097 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-01-10 09:13:04,097 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:13:04,097 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]
[2022-01-10 09:13:04,101 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 09:13:04,297 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 09:13:04,298 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] ===
[2022-01-10 09:13:04,298 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:13:04,298 INFO  L85        PathProgramCache]: Analyzing trace with hash 236875867, now seen corresponding path program 1 times
[2022-01-10 09:13:04,298 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:13:04,298 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859124915]
[2022-01-10 09:13:04,299 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:13:04,299 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:13:04,309 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 09:13:04,310 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289450787]
[2022-01-10 09:13:04,310 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:13:04,310 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:13:04,310 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:13:04,311 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 09:13:04,312 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 09:13:05,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:13:05,098 INFO  L263         TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-01-10 09:13:05,100 INFO  L286         TraceCheckSpWp]: Computing forward predicates...