/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_LAZY.epf -i ../../../trunk/examples/svcomp/array-fpi/ifcomp.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 15:43:43,007 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 15:43:43,009 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 15:43:43,059 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 15:43:43,060 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 15:43:43,072 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 15:43:43,077 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 15:43:43,078 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 15:43:43,079 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 15:43:43,080 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 15:43:43,081 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 15:43:43,082 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 15:43:43,082 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 15:43:43,083 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 15:43:43,084 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 15:43:43,085 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 15:43:43,085 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 15:43:43,086 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 15:43:43,092 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 15:43:43,098 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 15:43:43,103 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 15:43:43,104 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 15:43:43,105 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 15:43:43,106 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 15:43:43,108 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 15:43:43,108 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 15:43:43,108 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 15:43:43,109 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 15:43:43,110 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 15:43:43,110 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 15:43:43,111 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 15:43:43,111 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 15:43:43,112 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 15:43:43,113 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 15:43:43,113 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 15:43:43,114 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 15:43:43,114 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 15:43:43,115 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 15:43:43,115 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 15:43:43,116 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 15:43:43,116 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 15:43:43,124 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf
[2022-01-10 15:43:43,152 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 15:43:43,152 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 15:43:43,153 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 15:43:43,153 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 15:43:43,154 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 15:43:43,155 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 15:43:43,155 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 15:43:43,155 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 15:43:43,155 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 15:43:43,155 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 15:43:43,156 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 15:43:43,156 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 15:43:43,156 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 15:43:43,156 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 15:43:43,157 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 15:43:43,157 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 15:43:43,157 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 15:43:43,157 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 15:43:43,157 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 15:43:43,157 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 15:43:43,157 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 15:43:43,158 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 15:43:43,158 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 15:43:43,158 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 15:43:43,158 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 15:43:43,158 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 15:43:43,158 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 15:43:43,158 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 15:43:43,159 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 15:43:43,159 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 15:43:43,159 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 15:43:43,159 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 15:43:43,160 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 15:43:43,160 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_LAZY
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 15:43:43,394 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 15:43:43,422 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 15:43:43,424 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 15:43:43,425 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 15:43:43,425 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 15:43:43,426 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifcomp.c
[2022-01-10 15:43:43,475 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/648a7f6e1/f1ecd5f97eda469c919b11ec3534efe1/FLAGcb5695f9a
[2022-01-10 15:43:43,810 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 15:43:43,810 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifcomp.c
[2022-01-10 15:43:43,815 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/648a7f6e1/f1ecd5f97eda469c919b11ec3534efe1/FLAGcb5695f9a
[2022-01-10 15:43:44,245 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/648a7f6e1/f1ecd5f97eda469c919b11ec3534efe1
[2022-01-10 15:43:44,247 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 15:43:44,248 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 15:43:44,251 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 15:43:44,251 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 15:43:44,253 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 15:43:44,254 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,256 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@163f9d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44, skipping insertion in model container
[2022-01-10 15:43:44,256 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,262 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 15:43:44,275 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 15:43:44,424 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifcomp.c[589,602]
[2022-01-10 15:43:44,490 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 15:43:44,502 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 15:43:44,513 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifcomp.c[589,602]
[2022-01-10 15:43:44,535 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 15:43:44,549 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 15:43:44,549 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44 WrapperNode
[2022-01-10 15:43:44,549 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 15:43:44,550 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 15:43:44,550 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 15:43:44,550 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 15:43:44,556 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,571 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,596 INFO  L137                Inliner]: procedures = 18, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91
[2022-01-10 15:43:44,597 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 15:43:44,598 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 15:43:44,598 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 15:43:44,598 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 15:43:44,605 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,605 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,610 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,610 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,628 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,631 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,632 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,634 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 15:43:44,634 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 15:43:44,635 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 15:43:44,635 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 15:43:44,651 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (1/1) ...
[2022-01-10 15:43:44,657 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 15:43:44,665 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:43:44,674 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 15:43:44,676 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 15:43:44,706 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 15:43:44,706 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 15:43:44,706 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE8
[2022-01-10 15:43:44,706 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2022-01-10 15:43:44,706 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 15:43:44,706 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 15:43:44,706 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE8
[2022-01-10 15:43:44,753 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 15:43:44,754 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 15:43:45,166 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 15:43:45,170 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 15:43:45,171 INFO  L299             CfgBuilder]: Removed 4 assume(true) statements.
[2022-01-10 15:43:45,172 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:43:45 BoogieIcfgContainer
[2022-01-10 15:43:45,172 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 15:43:45,173 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 15:43:45,173 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 15:43:45,174 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 15:43:45,178 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:43:45" (1/1) ...
[2022-01-10 15:43:45,313 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:43:45 BasicIcfg
[2022-01-10 15:43:45,313 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 15:43:45,315 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 15:43:45,315 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 15:43:45,317 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 15:43:45,317 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:43:44" (1/4) ...
[2022-01-10 15:43:45,317 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4297452a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:43:45, skipping insertion in model container
[2022-01-10 15:43:45,317 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:44" (2/4) ...
[2022-01-10 15:43:45,318 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4297452a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:43:45, skipping insertion in model container
[2022-01-10 15:43:45,318 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:43:45" (3/4) ...
[2022-01-10 15:43:45,318 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4297452a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:43:45, skipping insertion in model container
[2022-01-10 15:43:45,318 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:43:45" (4/4) ...
[2022-01-10 15:43:45,319 INFO  L111   eAbstractionObserver]: Analyzing ICFG ifcomp.cTransformedIcfg
[2022-01-10 15:43:45,323 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 15:43:45,323 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 15:43:45,349 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 15:43:45,354 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 15:43:45,354 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 15:43:45,364 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 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 15:43:45,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 15:43:45,367 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:43:45,368 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:43:45,368 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:43:45,372 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:43:45,372 INFO  L85        PathProgramCache]: Analyzing trace with hash 2088313778, now seen corresponding path program 1 times
[2022-01-10 15:43:45,378 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:43:45,379 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710468622]
[2022-01-10 15:43:45,379 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:43:45,380 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:43:45,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:43:45,506 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 15:43:45,507 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:43:45,507 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710468622]
[2022-01-10 15:43:45,508 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710468622] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 15:43:45,508 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 15:43:45,508 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 15:43:45,510 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498924259]
[2022-01-10 15:43:45,511 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 15:43:45,513 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 15:43:45,513 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:43:45,547 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 15:43:45,547 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 15:43:45,549 INFO  L87              Difference]: Start difference. First operand  has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 15:43:45,561 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:43:45,561 INFO  L93              Difference]: Finished difference Result 50 states and 74 transitions.
[2022-01-10 15:43:45,561 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 15:43:45,562 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14
[2022-01-10 15:43:45,563 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:43:45,568 INFO  L225             Difference]: With dead ends: 50
[2022-01-10 15:43:45,568 INFO  L226             Difference]: Without dead ends: 23
[2022-01-10 15:43:45,570 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 15:43:45,573 INFO  L933         BasicCegarLoop]: 34 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, 34 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 15:43:45,574 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 15:43:45,586 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2022-01-10 15:43:45,597 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2022-01-10 15:43:45,598 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 22 states have (on average 1.3181818181818181) 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 15:43:45,599 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions.
[2022-01-10 15:43:45,600 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 14
[2022-01-10 15:43:45,600 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:43:45,601 INFO  L470      AbstractCegarLoop]: Abstraction has 23 states and 29 transitions.
[2022-01-10 15:43:45,601 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 15:43:45,603 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions.
[2022-01-10 15:43:45,603 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 15:43:45,604 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:43:45,604 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:43:45,604 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 15:43:45,604 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:43:45,606 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:43:45,606 INFO  L85        PathProgramCache]: Analyzing trace with hash -627664842, now seen corresponding path program 1 times
[2022-01-10 15:43:45,606 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:43:45,606 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65470688]
[2022-01-10 15:43:45,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:43:45,607 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:43:45,701 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 15:43:45,702 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288740665]
[2022-01-10 15:43:45,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:43:45,702 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:43:45,702 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:43:45,708 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 15:43:45,727 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 15:43:45,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:43:45,829 INFO  L263         TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 15:43:45,837 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 15:43:46,046 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 15:43:46,047 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 15:43:46,047 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:43:46,047 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65470688]
[2022-01-10 15:43:46,047 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 15:43:46,048 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288740665]
[2022-01-10 15:43:46,048 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [288740665] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 15:43:46,048 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 15:43:46,048 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 15:43:46,049 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655901759]
[2022-01-10 15:43:46,049 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 15:43:46,050 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 15:43:46,050 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:43:46,050 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 15:43:46,050 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 15:43:46,051 INFO  L87              Difference]: Start difference. First operand 23 states and 29 transitions. Second operand  has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 15:43:46,396 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:43:46,396 INFO  L93              Difference]: Finished difference Result 62 states and 82 transitions.
[2022-01-10 15:43:46,400 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 15:43:46,400 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14
[2022-01-10 15:43:46,400 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:43:46,401 INFO  L225             Difference]: With dead ends: 62
[2022-01-10 15:43:46,401 INFO  L226             Difference]: Without dead ends: 38
[2022-01-10 15:43:46,401 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 15:43:46,402 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-10 15:43:46,403 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 33 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-10 15:43:46,404 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2022-01-10 15:43:46,407 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29.
[2022-01-10 15:43:46,407 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 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 15:43:46,407 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions.
[2022-01-10 15:43:46,408 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 14
[2022-01-10 15:43:46,408 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:43:46,408 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 35 transitions.
[2022-01-10 15:43:46,408 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 15:43:46,408 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions.
[2022-01-10 15:43:46,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-01-10 15:43:46,409 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:43:46,409 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:43:46,434 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 15:43:46,630 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 15:43:46,631 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:43:46,631 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:43:46,632 INFO  L85        PathProgramCache]: Analyzing trace with hash -210198290, now seen corresponding path program 1 times
[2022-01-10 15:43:46,632 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:43:46,632 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631909665]
[2022-01-10 15:43:46,632 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:43:46,632 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:43:46,700 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 15:43:46,701 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691356825]
[2022-01-10 15:43:46,701 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:43:46,701 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:43:46,703 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:43:46,704 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 15:43:46,747 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 15:43:46,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:43:46,908 INFO  L263         TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-01-10 15:43:46,911 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 15:43:47,017 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-10 15:43:47,020 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19
[2022-01-10 15:43:47,147 INFO  L353             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-01-10 15:43:47,148 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22
[2022-01-10 15:43:47,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 15:43:47,204 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 15:43:47,205 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:43:47,206 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631909665]
[2022-01-10 15:43:47,206 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 15:43:47,206 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691356825]
[2022-01-10 15:43:47,206 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [691356825] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 15:43:47,206 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 15:43:47,207 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-10 15:43:47,207 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422915640]
[2022-01-10 15:43:47,207 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 15:43:47,208 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 15:43:47,208 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:43:47,208 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 15:43:47,208 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-01-10 15:43:47,209 INFO  L87              Difference]: Start difference. First operand 29 states and 35 transitions. Second operand  has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 15:43:49,248 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-10 15:43:49,980 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:43:49,980 INFO  L93              Difference]: Finished difference Result 69 states and 83 transitions.
[2022-01-10 15:43:49,983 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-01-10 15:43:49,983 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2022-01-10 15:43:49,984 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:43:49,984 INFO  L225             Difference]: With dead ends: 69
[2022-01-10 15:43:49,984 INFO  L226             Difference]: Without dead ends: 67
[2022-01-10 15:43:49,985 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-01-10 15:43:49,986 INFO  L933         BasicCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2022-01-10 15:43:49,986 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 101 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time]
[2022-01-10 15:43:49,987 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2022-01-10 15:43:49,993 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49.
[2022-01-10 15:43:49,993 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 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 15:43:49,994 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions.
[2022-01-10 15:43:49,994 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 23
[2022-01-10 15:43:49,994 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:43:49,995 INFO  L470      AbstractCegarLoop]: Abstraction has 49 states and 62 transitions.
[2022-01-10 15:43:49,995 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 15:43:49,995 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions.
[2022-01-10 15:43:49,996 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-01-10 15:43:49,996 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:43:49,996 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:43:50,000 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 15:43:50,200 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 15:43:50,201 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:43:50,201 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:43:50,201 INFO  L85        PathProgramCache]: Analyzing trace with hash -713787723, now seen corresponding path program 1 times
[2022-01-10 15:43:50,201 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:43:50,201 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707616330]
[2022-01-10 15:43:50,202 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:43:50,202 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:43:50,281 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 15:43:50,281 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955624908]
[2022-01-10 15:43:50,281 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:43:50,282 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:43:50,282 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:43:50,294 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 15:43:50,295 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 15:43:50,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:43:50,410 INFO  L263         TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 15:43:50,414 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 15:43:50,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 15:43:50,993 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 15:44:06,311 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 15:44:06,311 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:44:06,311 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707616330]
[2022-01-10 15:44:06,312 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 15:44:06,312 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955624908]
[2022-01-10 15:44:06,312 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955624908] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 15:44:06,312 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 15:44:06,312 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2022-01-10 15:44:06,312 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740531932]
[2022-01-10 15:44:06,312 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 15:44:06,313 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-10 15:44:06,314 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:44:06,314 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-10 15:44:06,315 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2022-01-10 15:44:06,315 INFO  L87              Difference]: Start difference. First operand 49 states and 62 transitions. Second operand  has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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 15:44:08,498 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-10 15:44:11,022 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-10 15:44:13,588 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []
[2022-01-10 15:44:13,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:44:13,905 INFO  L93              Difference]: Finished difference Result 104 states and 131 transitions.
[2022-01-10 15:44:13,905 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-10 15:44:13,905 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) Word has length 26
[2022-01-10 15:44:13,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:44:13,906 INFO  L225             Difference]: With dead ends: 104
[2022-01-10 15:44:13,906 INFO  L226             Difference]: Without dead ends: 62
[2022-01-10 15:44:13,907 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156
[2022-01-10 15:44:13,908 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2022-01-10 15:44:13,908 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 53 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 90 Invalid, 3 Unknown, 40 Unchecked, 7.2s Time]
[2022-01-10 15:44:13,909 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2022-01-10 15:44:13,915 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57.
[2022-01-10 15:44:13,915 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 57 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 56 states have internal predecessors, (65), 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 15:44:13,916 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions.
[2022-01-10 15:44:13,916 INFO  L78                 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 26
[2022-01-10 15:44:13,916 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:44:13,916 INFO  L470      AbstractCegarLoop]: Abstraction has 57 states and 65 transitions.
[2022-01-10 15:44:13,916 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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 15:44:13,917 INFO  L276                IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions.
[2022-01-10 15:44:13,917 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-01-10 15:44:13,917 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:44:13,917 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:44:13,942 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 15:44:14,118 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 15:44:14,118 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:44:14,119 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:44:14,119 INFO  L85        PathProgramCache]: Analyzing trace with hash 1906848534, now seen corresponding path program 1 times
[2022-01-10 15:44:14,119 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:44:14,119 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608400080]
[2022-01-10 15:44:14,119 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:44:14,119 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:44:14,182 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 15:44:14,182 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749337217]
[2022-01-10 15:44:14,182 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:44:14,182 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:44:14,182 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:44:14,187 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 15:44:14,188 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 15:44:14,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:44:14,279 INFO  L263         TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 15:44:14,282 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 15:44:15,124 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 15:44:15,124 INFO  L328         TraceCheckSpWp]: Computing backward predicates...