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


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 02:06:11,892 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 02:06:11,893 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 02:06:11,945 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 02:06:11,945 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 02:06:11,947 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 02:06:11,949 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 02:06:11,953 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-11 02:06:11,954 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-11 02:06:11,957 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-11 02:06:11,958 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-11 02:06:11,959 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 02:06:11,959 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 02:06:11,960 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 02:06:11,961 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 02:06:11,963 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 02:06:11,964 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 02:06:11,964 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 02:06:11,966 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 02:06:11,969 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 02:06:11,970 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 02:06:11,971 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 02:06:11,972 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 02:06:11,972 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 02:06:11,977 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 02:06:11,977 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 02:06:11,977 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 02:06:11,978 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 02:06:11,978 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 02:06:11,979 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 02:06:11,979 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 02:06:11,979 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 02:06:11,980 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 02:06:11,981 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 02:06:11,982 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 02:06:11,982 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 02:06:11,982 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 02:06:11,982 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 02:06:11,983 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-11 02:06:11,983 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-11 02:06:11,983 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 02:06:11,984 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf
[2022-01-11 02:06:12,005 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 02:06:12,006 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 02:06:12,006 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 02:06:12,006 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 02:06:12,007 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 02:06:12,007 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 02:06:12,007 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 02:06:12,007 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 02:06:12,007 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 02:06:12,007 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 02:06:12,008 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 02:06:12,008 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 02:06:12,008 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 02:06:12,008 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 02:06:12,008 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 02:06:12,008 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 02:06:12,008 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 02:06:12,008 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 02:06:12,008 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 02:06:12,009 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 02:06:12,009 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 02:06:12,009 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:06:12,010 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 02:06:12,010 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 02:06:12,010 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 02:06:12,010 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 02:06:12,010 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 02:06:12,010 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 02:06:12,010 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 02:06:12,010 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 02:06:12,010 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 02:06:12,010 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 02:06:12,011 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 02:06:12,011 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_SUM
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 02:06:12,180 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 02:06:12,192 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 02:06:12,194 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 02:06:12,194 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 02:06:12,195 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 02:06:12,195 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i
[2022-01-11 02:06:12,233 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030861bd7/98f69770e7df4fe4beab68f67633cf09/FLAG0066d48e6
[2022-01-11 02:06:12,551 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 02:06:12,552 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i
[2022-01-11 02:06:12,555 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030861bd7/98f69770e7df4fe4beab68f67633cf09/FLAG0066d48e6
[2022-01-11 02:06:12,998 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030861bd7/98f69770e7df4fe4beab68f67633cf09
[2022-01-11 02:06:13,001 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 02:06:13,002 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 02:06:13,005 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 02:06:13,005 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 02:06:13,007 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 02:06:13,007 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:06:12" (1/1) ...
[2022-01-11 02:06:13,009 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e66e963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13, skipping insertion in model container
[2022-01-11 02:06:13,009 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:06:12" (1/1) ...
[2022-01-11 02:06:13,013 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 02:06:13,022 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 02:06:13,154 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i[891,904]
[2022-01-11 02:06:13,167 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:06:13,174 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 02:06:13,185 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i[891,904]
[2022-01-11 02:06:13,190 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:06:13,200 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 02:06:13,201 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13 WrapperNode
[2022-01-11 02:06:13,201 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 02:06:13,201 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 02:06:13,202 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 02:06:13,202 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 02:06:13,206 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,211 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,221 INFO  L137                Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36
[2022-01-11 02:06:13,221 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 02:06:13,221 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 02:06:13,221 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 02:06:13,221 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 02:06:13,225 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,225 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,228 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,228 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,236 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,238 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,241 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,245 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 02:06:13,246 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 02:06:13,246 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 02:06:13,246 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 02:06:13,247 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,251 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:06:13,261 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:06:13,270 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-11 02:06:13,325 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-11 02:06:13,331 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 02:06:13,339 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 02:06:13,339 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 02:06:13,340 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 02:06:13,381 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 02:06:13,381 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 02:06:13,463 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 02:06:13,469 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 02:06:13,470 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-11 02:06:13,471 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:06:13 BoogieIcfgContainer
[2022-01-11 02:06:13,471 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 02:06:13,471 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 02:06:13,471 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 02:06:13,475 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 02:06:13,478 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:06:13" (1/1) ...
[2022-01-11 02:06:13,512 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:06:13 BasicIcfg
[2022-01-11 02:06:13,513 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 02:06:13,513 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 02:06:13,514 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 02:06:13,515 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 02:06:13,515 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:06:12" (1/4) ...
[2022-01-11 02:06:13,516 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331493dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:06:13, skipping insertion in model container
[2022-01-11 02:06:13,516 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:06:13" (2/4) ...
[2022-01-11 02:06:13,516 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331493dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:06:13, skipping insertion in model container
[2022-01-11 02:06:13,516 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:06:13" (3/4) ...
[2022-01-11 02:06:13,517 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331493dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:06:13, skipping insertion in model container
[2022-01-11 02:06:13,517 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:06:13" (4/4) ...
[2022-01-11 02:06:13,517 INFO  L111   eAbstractionObserver]: Analyzing ICFG gauss_sum.iTransformedIcfg
[2022-01-11 02:06:13,520 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 02:06:13,520 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-11 02:06:13,567 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 02:06:13,571 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-11 02:06:13,571 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-11 02:06:13,578 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:06:13,581 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-01-11 02:06:13,581 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:06:13,581 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:06:13,582 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:06:13,584 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:06:13,585 INFO  L85        PathProgramCache]: Analyzing trace with hash 429766571, now seen corresponding path program 1 times
[2022-01-11 02:06:13,589 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:06:13,590 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133380613]
[2022-01-11 02:06:13,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:06:13,590 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:06:13,647 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:06:13,675 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:06:13,675 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:06:13,675 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133380613]
[2022-01-11 02:06:13,676 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133380613] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:06:13,676 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:06:13,676 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-11 02:06:13,677 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122369384]
[2022-01-11 02:06:13,677 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:06:13,680 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-11 02:06:13,680 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:06:13,695 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-11 02:06:13,696 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 02:06:13,697 INFO  L87              Difference]: Start difference. First operand  has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:06:13,705 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:06:13,705 INFO  L93              Difference]: Finished difference Result 21 states and 24 transitions.
[2022-01-11 02:06:13,705 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-11 02:06:13,706 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7
[2022-01-11 02:06:13,706 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:06:13,710 INFO  L225             Difference]: With dead ends: 21
[2022-01-11 02:06:13,710 INFO  L226             Difference]: Without dead ends: 9
[2022-01-11 02:06:13,712 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 02:06:13,715 INFO  L933         BasicCegarLoop]: 14 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, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-11 02:06:13,715 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 02:06:13,725 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2022-01-11 02:06:13,730 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2022-01-11 02:06:13,731 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:06:13,731 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2022-01-11 02:06:13,732 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7
[2022-01-11 02:06:13,732 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:06:13,732 INFO  L470      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2022-01-11 02:06:13,732 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:06:13,732 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2022-01-11 02:06:13,732 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-01-11 02:06:13,733 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:06:13,733 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:06:13,733 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 02:06:13,733 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:06:13,734 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:06:13,734 INFO  L85        PathProgramCache]: Analyzing trace with hash 429796362, now seen corresponding path program 1 times
[2022-01-11 02:06:13,734 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:06:13,734 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253800201]
[2022-01-11 02:06:13,734 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:06:13,734 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:06:13,748 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:06:13,748 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168771215]
[2022-01-11 02:06:13,748 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:06:13,748 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:06:13,748 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:06:13,749 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:06:13,750 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-11 02:06:13,791 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:06:13,792 INFO  L263         TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-01-11 02:06:13,795 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:06:13,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:06:13,889 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-11 02:06:13,889 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:06:13,889 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253800201]
[2022-01-11 02:06:13,889 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:06:13,889 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168771215]
[2022-01-11 02:06:13,889 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [168771215] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:06:13,890 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:06:13,890 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-11 02:06:13,890 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251445497]
[2022-01-11 02:06:13,890 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:06:13,891 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-11 02:06:13,891 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:06:13,891 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-11 02:06:13,891 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-11 02:06:13,891 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:06:13,902 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:06:13,902 INFO  L93              Difference]: Finished difference Result 15 states and 15 transitions.
[2022-01-11 02:06:13,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-11 02:06:13,903 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7
[2022-01-11 02:06:13,903 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:06:13,903 INFO  L225             Difference]: With dead ends: 15
[2022-01-11 02:06:13,903 INFO  L226             Difference]: Without dead ends: 11
[2022-01-11 02:06:13,903 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-11 02:06:13,904 INFO  L933         BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-11 02:06:13,905 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 02:06:13,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2022-01-11 02:06:13,910 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10.
[2022-01-11 02:06:13,910 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:06:13,910 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions.
[2022-01-11 02:06:13,911 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7
[2022-01-11 02:06:13,911 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:06:13,911 INFO  L470      AbstractCegarLoop]: Abstraction has 10 states and 10 transitions.
[2022-01-11 02:06:13,911 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:06:13,911 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions.
[2022-01-11 02:06:13,911 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-01-11 02:06:13,911 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:06:13,911 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:06:13,930 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-11 02:06:14,130 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:06:14,130 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:06:14,131 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:06:14,131 INFO  L85        PathProgramCache]: Analyzing trace with hash 746844845, now seen corresponding path program 1 times
[2022-01-11 02:06:14,131 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:06:14,131 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215792023]
[2022-01-11 02:06:14,131 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:06:14,131 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:06:14,152 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:06:14,152 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526338335]
[2022-01-11 02:06:14,152 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:06:14,152 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:06:14,152 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:06:14,164 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:06:14,165 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-11 02:06:14,211 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:06:14,214 INFO  L263         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-01-11 02:06:14,216 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:06:14,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:06:14,503 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:06:24,667 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:06:24,667 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:06:24,667 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215792023]
[2022-01-11 02:06:24,667 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:06:24,668 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526338335]
[2022-01-11 02:06:24,668 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [526338335] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:06:24,668 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-11 02:06:24,668 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2022-01-11 02:06:24,668 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543782449]
[2022-01-11 02:06:24,668 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:06:24,668 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-11 02:06:24,669 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:06:24,669 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-11 02:06:24,669 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=80, Unknown=1, NotChecked=0, Total=110
[2022-01-11 02:06:24,669 INFO  L87              Difference]: Start difference. First operand 10 states and 10 transitions. Second operand  has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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)
[2022-01-11 02:06:26,871 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:06:26,871 INFO  L93              Difference]: Finished difference Result 20 states and 21 transitions.
[2022-01-11 02:06:26,871 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-11 02:06:26,871 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 9
[2022-01-11 02:06:26,872 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:06:26,872 INFO  L225             Difference]: With dead ends: 20
[2022-01-11 02:06:26,872 INFO  L226             Difference]: Without dead ends: 14
[2022-01-11 02:06:26,873 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=62, Invalid=147, Unknown=1, NotChecked=0, Total=210
[2022-01-11 02:06:26,873 INFO  L933         BasicCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-01-11 02:06:26,874 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-01-11 02:06:26,874 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2022-01-11 02:06:26,876 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2022-01-11 02:06:26,876 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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)
[2022-01-11 02:06:26,877 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2022-01-11 02:06:26,877 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9
[2022-01-11 02:06:26,877 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:06:26,877 INFO  L470      AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2022-01-11 02:06:26,877 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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)
[2022-01-11 02:06:26,877 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2022-01-11 02:06:26,878 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-11 02:06:26,878 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:06:26,878 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:06:26,905 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-11 02:06:27,087 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2022-01-11 02:06:27,088 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:06:27,089 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:06:27,089 INFO  L85        PathProgramCache]: Analyzing trace with hash 614357427, now seen corresponding path program 2 times
[2022-01-11 02:06:27,090 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:06:27,090 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499327695]
[2022-01-11 02:06:27,091 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:06:27,091 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:06:27,126 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:06:27,126 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80329462]
[2022-01-11 02:06:27,126 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-11 02:06:27,127 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:06:27,127 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:06:27,140 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:06:27,179 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-11 02:06:27,285 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-11 02:06:27,285 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-11 02:06:27,286 INFO  L263         TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 34 conjunts are in the unsatisfiable core
[2022-01-11 02:06:27,288 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:06:27,600 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:06:27,600 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:06:47,481 WARN  L860   $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 1))) (let ((.cse4 (mod .cse3 4294967296))) (let ((.cse5 (+ 1 .cse4))) (let ((.cse1 (* 2 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 2147483648))) (.cse2 (mod .cse5 4294967296))) (or (let ((.cse0 (+ .cse2 1))) (<= (+ |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (* (mod .cse0 2147483648) 2)) (+ .cse1 (mod .cse0 4294967296)))) (not (<= (+ |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (* 2 (mod .cse3 2147483648))) (+ .cse1 .cse4))) (= (mod (* (mod (+ (mod (+ (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~sum~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|) 4294967296) .cse4) 4294967296) .cse2) 4294967296) 2) 4294967296) (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 1) 4294967296)) 4294967296)) (not (<= (+ |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (* 2 (mod .cse5 2147483648))) (+ .cse1 .cse2)))))))) is different from true
[2022-01-11 02:06:47,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked.
[2022-01-11 02:06:47,616 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:06:47,616 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499327695]
[2022-01-11 02:06:47,617 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:06:47,617 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80329462]
[2022-01-11 02:06:47,618 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [80329462] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:06:47,618 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-11 02:06:47,618 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19
[2022-01-11 02:06:47,618 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439380621]
[2022-01-11 02:06:47,618 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:06:47,619 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-01-11 02:06:47,619 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:06:47,620 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-01-11 02:06:47,620 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=245, Unknown=1, NotChecked=32, Total=342
[2022-01-11 02:06:47,621 INFO  L87              Difference]: Start difference. First operand 14 states and 14 transitions. Second operand  has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:06:53,695 WARN  L228               SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-11 02:07:12,328 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:07:12,328 INFO  L93              Difference]: Finished difference Result 28 states and 31 transitions.
[2022-01-11 02:07:12,328 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2022-01-11 02:07:12,328 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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
[2022-01-11 02:07:12,329 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:07:12,329 INFO  L225             Difference]: With dead ends: 28
[2022-01-11 02:07:12,329 INFO  L226             Difference]: Without dead ends: 22
[2022-01-11 02:07:12,329 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=183, Invalid=576, Unknown=1, NotChecked=52, Total=812
[2022-01-11 02:07:12,330 INFO  L933         BasicCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2022-01-11 02:07:12,330 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 32 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 107 Invalid, 0 Unknown, 17 Unchecked, 2.0s Time]
[2022-01-11 02:07:12,331 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-01-11 02:07:12,334 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2022-01-11 02:07:12,334 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:07:12,334 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions.
[2022-01-11 02:07:12,334 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13
[2022-01-11 02:07:12,334 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:07:12,334 INFO  L470      AbstractCegarLoop]: Abstraction has 22 states and 22 transitions.
[2022-01-11 02:07:12,335 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:07:12,335 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions.
[2022-01-11 02:07:12,335 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-01-11 02:07:12,335 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:07:12,335 INFO  L514         BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:07:12,340 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-01-11 02:07:12,539 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:07:12,540 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:07:12,540 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:07:12,540 INFO  L85        PathProgramCache]: Analyzing trace with hash 1809829567, now seen corresponding path program 3 times
[2022-01-11 02:07:12,540 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:07:12,540 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820347573]
[2022-01-11 02:07:12,540 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:07:12,541 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:07:12,578 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:07:12,579 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288766904]
[2022-01-11 02:07:12,579 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-11 02:07:12,579 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:07:12,579 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:07:12,589 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:07:12,591 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-01-11 02:07:14,120 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2022-01-11 02:07:14,120 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-11 02:07:14,129 INFO  L263         TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 69 conjunts are in the unsatisfiable core
[2022-01-11 02:07:14,131 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:07:14,771 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:07:14,772 INFO  L328         TraceCheckSpWp]: Computing backward predicates...