/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_unwindbound50.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 21:00:29,991 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 21:00:29,993 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 21:00:30,059 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 21:00:30,060 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 21:00:30,062 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 21:00:30,063 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 21:00:30,081 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 21:00:30,082 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 21:00:30,083 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 21:00:30,086 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 21:00:30,087 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 21:00:30,087 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 21:00:30,089 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 21:00:30,094 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 21:00:30,095 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 21:00:30,095 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 21:00:30,097 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 21:00:30,097 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 21:00:30,102 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 21:00:30,102 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 21:00:30,102 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 21:00:30,103 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 21:00:30,103 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 21:00:30,104 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 21:00:30,104 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 21:00:30,105 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 21:00:30,106 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 21:00:30,106 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 21:00:30,107 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 21:00:30,107 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 21:00:30,108 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 21:00:30,108 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 21:00:30,108 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 21:00:30,109 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 21:00:30,109 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 21:00:30,110 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 21:00:30,136 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 21:00:30,136 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 21:00:30,137 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 21:00:30,137 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 21:00:30,138 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 21:00:30,138 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 21:00:30,138 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 21:00:30,138 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 21:00:30,138 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 21:00:30,138 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 21:00:30,139 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 21:00:30,139 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 21:00:30,139 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 21:00:30,139 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 21:00:30,139 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 21:00:30,139 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 21:00:30,139 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 21:00:30,139 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 21:00:30,139 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 21:00:30,139 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 21:00:30,140 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 21:00:30,140 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 21:00:30,140 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 21:00:30,141 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 21:00:30,141 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 21:00:30,141 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 21:00:30,141 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 21:00:30,141 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 21:00:30,141 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 21:00:30,141 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 21:00:30,142 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 21:00:30,142 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 21:00:30,142 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 21:00:30,142 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 21:00:30,329 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 21:00:30,355 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 21:00:30,356 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 21:00:30,357 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 21:00:30,358 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 21:00:30,359 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_unwindbound50.c
[2022-01-10 21:00:30,406 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2e63602b/a5c8d971020a443080013a348b711a28/FLAGa17c1abfc
[2022-01-10 21:00:30,745 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 21:00:30,745 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_unwindbound50.c
[2022-01-10 21:00:30,755 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2e63602b/a5c8d971020a443080013a348b711a28/FLAGa17c1abfc
[2022-01-10 21:00:31,168 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2e63602b/a5c8d971020a443080013a348b711a28
[2022-01-10 21:00:31,170 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 21:00:31,170 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 21:00:31,174 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 21:00:31,174 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 21:00:31,176 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 21:00:31,177 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,204 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bd3c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31, skipping insertion in model container
[2022-01-10 21:00:31,204 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,209 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 21:00:31,220 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 21:00:31,393 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/ps5-ll_unwindbound50.c[458,471]
[2022-01-10 21:00:31,424 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 21:00:31,433 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 21:00:31,445 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/ps5-ll_unwindbound50.c[458,471]
[2022-01-10 21:00:31,465 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 21:00:31,474 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 21:00:31,474 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31 WrapperNode
[2022-01-10 21:00:31,474 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 21:00:31,476 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 21:00:31,476 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 21:00:31,476 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 21:00:31,481 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,487 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,505 INFO  L137                Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 57
[2022-01-10 21:00:31,506 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 21:00:31,506 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 21:00:31,506 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 21:00:31,507 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 21:00:31,512 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,512 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,521 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,522 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,533 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,535 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,536 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,537 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 21:00:31,538 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 21:00:31,538 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 21:00:31,538 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 21:00:31,539 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (1/1) ...
[2022-01-10 21:00:31,545 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 21:00:31,554 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:00:31,580 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 21:00:31,586 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 21:00:31,607 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 21:00:31,607 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 21:00:31,607 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 21:00:31,607 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 21:00:31,675 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 21:00:31,677 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 21:00:33,060 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 21:00:33,064 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 21:00:33,065 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 21:00:33,066 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:00:33 BoogieIcfgContainer
[2022-01-10 21:00:33,066 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 21:00:33,067 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 21:00:33,067 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 21:00:33,070 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 21:00:33,083 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:00:33" (1/1) ...
[2022-01-10 21:00:33,246 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:00:33 BasicIcfg
[2022-01-10 21:00:33,246 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 21:00:33,264 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 21:00:33,264 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 21:00:33,266 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 21:00:33,267 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:00:31" (1/4) ...
[2022-01-10 21:00:33,268 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8b3202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:00:33, skipping insertion in model container
[2022-01-10 21:00:33,268 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:00:31" (2/4) ...
[2022-01-10 21:00:33,268 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8b3202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:00:33, skipping insertion in model container
[2022-01-10 21:00:33,268 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:00:33" (3/4) ...
[2022-01-10 21:00:33,268 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8b3202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:00:33, skipping insertion in model container
[2022-01-10 21:00:33,268 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:00:33" (4/4) ...
[2022-01-10 21:00:33,269 INFO  L111   eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound50.cTransformedIcfg
[2022-01-10 21:00:33,275 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 21:00:33,276 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations.
[2022-01-10 21:00:33,331 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 21:00:33,340 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 21:00:33,340 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2022-01-10 21:00:33,351 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 23 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 22 states have internal predecessors, (29), 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 21:00:33,355 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 21:00:33,355 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:00:33,356 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:00:33,356 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:00:33,360 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:00:33,360 INFO  L85        PathProgramCache]: Analyzing trace with hash 235801450, now seen corresponding path program 1 times
[2022-01-10 21:00:33,366 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:00:33,366 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760340613]
[2022-01-10 21:00:33,366 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:33,367 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:00:33,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:00:33,523 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 21:00:33,524 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:00:33,524 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760340613]
[2022-01-10 21:00:33,524 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760340613] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:00:33,524 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:00:33,525 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 21:00:33,526 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374555975]
[2022-01-10 21:00:33,526 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:00:33,529 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 21:00:33,529 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:00:33,573 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 21:00:33,574 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 21:00:33,575 INFO  L87              Difference]: Start difference. First operand  has 23 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 22 states have internal predecessors, (29), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 21:00:33,584 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:00:33,584 INFO  L93              Difference]: Finished difference Result 43 states and 54 transitions.
[2022-01-10 21:00:33,593 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 21:00:33,594 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8
[2022-01-10 21:00:33,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:00:33,607 INFO  L225             Difference]: With dead ends: 43
[2022-01-10 21:00:33,608 INFO  L226             Difference]: Without dead ends: 19
[2022-01-10 21:00:33,616 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 21:00:33,618 INFO  L933         BasicCegarLoop]: 24 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, 24 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 21:00:33,619 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 21:00:33,632 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2022-01-10 21:00:33,639 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2022-01-10 21:00:33,640 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 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 21:00:33,641 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions.
[2022-01-10 21:00:33,641 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 8
[2022-01-10 21:00:33,641 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:00:33,642 INFO  L470      AbstractCegarLoop]: Abstraction has 19 states and 20 transitions.
[2022-01-10 21:00:33,642 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 21:00:33,642 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2022-01-10 21:00:33,642 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 21:00:33,642 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:00:33,642 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:00:33,642 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 21:00:33,643 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:00:33,643 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:00:33,643 INFO  L85        PathProgramCache]: Analyzing trace with hash 264462379, now seen corresponding path program 1 times
[2022-01-10 21:00:33,643 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:00:33,643 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224117420]
[2022-01-10 21:00:33,644 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:33,644 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:00:33,658 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:00:33,659 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442488720]
[2022-01-10 21:00:33,659 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:33,659 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:00:33,659 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:00:33,660 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 21:00:33,699 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 21:00:33,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:00:33,751 INFO  L263         TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-10 21:00:33,756 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:00:33,856 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 21:00:33,856 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 21:00:33,857 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:00:33,857 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224117420]
[2022-01-10 21:00:33,857 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 21:00:33,871 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442488720]
[2022-01-10 21:00:33,871 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442488720] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:00:33,871 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:00:33,872 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 21:00:33,872 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140262644]
[2022-01-10 21:00:33,872 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:00:33,873 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 21:00:33,873 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:00:33,873 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 21:00:33,873 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 21:00:33,874 INFO  L87              Difference]: Start difference. First operand 19 states and 20 transitions. Second operand  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 21:00:34,349 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:00:34,349 INFO  L93              Difference]: Finished difference Result 35 states and 37 transitions.
[2022-01-10 21:00:34,354 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 21:00:34,354 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8
[2022-01-10 21:00:34,354 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:00:34,355 INFO  L225             Difference]: With dead ends: 35
[2022-01-10 21:00:34,355 INFO  L226             Difference]: Without dead ends: 24
[2022-01-10 21:00:34,355 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 21:00:34,356 INFO  L933         BasicCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-10 21:00:34,356 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 40 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-10 21:00:34,357 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2022-01-10 21:00:34,359 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2022-01-10 21:00:34,359 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 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 21:00:34,360 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2022-01-10 21:00:34,360 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 8
[2022-01-10 21:00:34,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:00:34,360 INFO  L470      AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2022-01-10 21:00:34,360 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 21:00:34,360 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2022-01-10 21:00:34,360 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 21:00:34,361 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:00:34,361 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:00:34,382 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-10 21:00:34,564 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 21:00:34,565 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:00:34,565 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:00:34,565 INFO  L85        PathProgramCache]: Analyzing trace with hash -1442682540, now seen corresponding path program 1 times
[2022-01-10 21:00:34,565 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:00:34,565 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631621299]
[2022-01-10 21:00:34,566 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:34,566 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:00:34,584 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:00:34,584 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687148024]
[2022-01-10 21:00:34,584 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:34,585 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:00:34,585 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:00:34,597 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 21:00:34,598 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 21:00:34,791 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:00:34,793 INFO  L263         TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-01-10 21:00:34,794 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:00:34,951 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 21:00:34,951 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 21:00:36,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 21:00:36,396 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:00:36,396 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631621299]
[2022-01-10 21:00:36,396 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 21:00:36,396 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687148024]
[2022-01-10 21:00:36,396 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [687148024] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 21:00:36,396 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 21:00:36,396 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6
[2022-01-10 21:00:36,396 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641170361]
[2022-01-10 21:00:36,397 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 21:00:36,397 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 21:00:36,397 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:00:36,397 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 21:00:36,397 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-01-10 21:00:36,398 INFO  L87              Difference]: Start difference. First operand 24 states and 25 transitions. Second operand  has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 21:00:38,730 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 21:00:38,761 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:00:38,761 INFO  L93              Difference]: Finished difference Result 35 states and 39 transitions.
[2022-01-10 21:00:38,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-10 21:00:38,762 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 21:00:38,762 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:00:38,762 INFO  L225             Difference]: With dead ends: 35
[2022-01-10 21:00:38,763 INFO  L226             Difference]: Without dead ends: 31
[2022-01-10 21:00:38,763 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2022-01-10 21:00:38,764 INFO  L933         BasicCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2022-01-10 21:00:38,764 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 35 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]
[2022-01-10 21:00:38,765 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-01-10 21:00:38,768 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20.
[2022-01-10 21:00:38,768 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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)
[2022-01-10 21:00:38,768 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions.
[2022-01-10 21:00:38,769 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13
[2022-01-10 21:00:38,769 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:00:38,769 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 21 transitions.
[2022-01-10 21:00:38,769 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 21:00:38,769 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions.
[2022-01-10 21:00:38,769 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-10 21:00:38,769 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:00:38,769 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:00:38,783 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 21:00:38,979 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 21:00:38,980 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:00:38,980 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:00:38,980 INFO  L85        PathProgramCache]: Analyzing trace with hash 748836995, now seen corresponding path program 1 times
[2022-01-10 21:00:38,980 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:00:38,980 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518587006]
[2022-01-10 21:00:38,980 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:38,981 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:00:39,000 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:00:39,000 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157025365]
[2022-01-10 21:00:39,001 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:39,001 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:00:39,001 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:00:39,011 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 21:00:39,012 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 21:00:39,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:00:39,112 INFO  L263         TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-10 21:00:39,113 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:00:39,460 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 21:00:39,460 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 21:00:39,604 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 21:00:39,605 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:00:39,605 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518587006]
[2022-01-10 21:00:39,605 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 21:00:39,605 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157025365]
[2022-01-10 21:00:39,605 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157025365] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 21:00:39,605 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 21:00:39,605 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2022-01-10 21:00:39,605 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778233279]
[2022-01-10 21:00:39,605 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 21:00:39,606 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-10 21:00:39,606 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:00:39,606 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-10 21:00:39,606 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2022-01-10 21:00:39,606 INFO  L87              Difference]: Start difference. First operand 20 states and 21 transitions. Second operand  has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:00:41,834 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 21:00:41,866 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:00:41,866 INFO  L93              Difference]: Finished difference Result 50 states and 53 transitions.
[2022-01-10 21:00:41,866 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-10 21:00:41,867 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2022-01-10 21:00:41,867 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:00:41,867 INFO  L225             Difference]: With dead ends: 50
[2022-01-10 21:00:41,867 INFO  L226             Difference]: Without dead ends: 44
[2022-01-10 21:00:41,868 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2022-01-10 21:00:41,868 INFO  L933         BasicCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2022-01-10 21:00:41,868 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 67 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time]
[2022-01-10 21:00:41,869 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2022-01-10 21:00:41,874 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32.
[2022-01-10 21:00:41,874 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 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 21:00:41,874 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions.
[2022-01-10 21:00:41,875 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 16
[2022-01-10 21:00:41,875 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:00:41,875 INFO  L470      AbstractCegarLoop]: Abstraction has 32 states and 35 transitions.
[2022-01-10 21:00:41,875 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:00:41,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions.
[2022-01-10 21:00:41,875 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-10 21:00:41,875 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:00:41,875 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:00:41,895 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-01-10 21:00:42,076 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 21:00:42,076 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:00:42,076 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:00:42,077 INFO  L85        PathProgramCache]: Analyzing trace with hash -728187153, now seen corresponding path program 1 times
[2022-01-10 21:00:42,077 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:00:42,077 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93494057]
[2022-01-10 21:00:42,077 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:42,077 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:00:42,089 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:00:42,090 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486448679]
[2022-01-10 21:00:42,090 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:00:42,090 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:00:42,090 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:00:42,094 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 21:00:42,146 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 21:00:42,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:00:42,346 INFO  L263         TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-01-10 21:00:42,349 INFO  L286         TraceCheckSpWp]: Computing forward predicates...