/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/nla-digbench/lcm1.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 02:15:52,785 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 02:15:52,786 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 02:15:52,827 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 02:15:52,828 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 02:15:52,845 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 02:15:52,855 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 02:15:52,862 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-11 02:15:52,863 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-11 02:15:52,864 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-11 02:15:52,864 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-11 02:15:52,865 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 02:15:52,866 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 02:15:52,866 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 02:15:52,867 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 02:15:52,868 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 02:15:52,869 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 02:15:52,874 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 02:15:52,875 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 02:15:52,877 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 02:15:52,878 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 02:15:52,882 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 02:15:52,883 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 02:15:52,884 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 02:15:52,886 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 02:15:52,886 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 02:15:52,886 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 02:15:52,887 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 02:15:52,887 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 02:15:52,888 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 02:15:52,888 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 02:15:52,888 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 02:15:52,889 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 02:15:52,890 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 02:15:52,890 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 02:15:52,890 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 02:15:52,895 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 02:15:52,895 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 02:15:52,896 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-11 02:15:52,896 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-11 02:15:52,897 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 02:15:52,898 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 02:15:52,928 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 02:15:52,928 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 02:15:52,928 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 02:15:52,928 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 02:15:52,929 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 02:15:52,929 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 02:15:52,930 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 02:15:52,930 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 02:15:52,930 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 02:15:52,930 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 02:15:52,930 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 02:15:52,930 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 02:15:52,930 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 02:15:52,931 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 02:15:52,931 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 02:15:52,931 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 02:15:52,933 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 02:15:52,933 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 02:15:52,933 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 02:15:52,933 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 02:15:52,934 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 02:15:52,934 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:15:52,934 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 02:15:52,934 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 02:15:52,934 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 02:15:52,934 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 02:15:52,934 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 02:15:52,935 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 02:15:52,935 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 02:15:52,935 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 02:15:52,935 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 02:15:52,935 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 02:15:52,936 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 02:15:52,936 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 02:15:53,175 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 02:15:53,204 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 02:15:53,206 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 02:15:53,207 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 02:15:53,209 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 02:15:53,210 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm1.c
[2022-01-11 02:15:53,265 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54be90823/fdb3de3dfa4b43d9910bbb0c9dc3ee8a/FLAGca46410f1
[2022-01-11 02:15:53,673 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 02:15:53,674 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c
[2022-01-11 02:15:53,683 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54be90823/fdb3de3dfa4b43d9910bbb0c9dc3ee8a/FLAGca46410f1
[2022-01-11 02:15:53,700 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54be90823/fdb3de3dfa4b43d9910bbb0c9dc3ee8a
[2022-01-11 02:15:53,703 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 02:15:53,706 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 02:15:53,707 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 02:15:53,708 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 02:15:53,710 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 02:15:53,711 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:53,712 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@857aa24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53, skipping insertion in model container
[2022-01-11 02:15:53,712 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:53,718 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 02:15:53,739 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 02:15:53,860 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c[552,565]
[2022-01-11 02:15:53,872 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:15:53,891 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 02:15:53,926 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c[552,565]
[2022-01-11 02:15:53,933 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:15:53,944 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 02:15:53,944 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53 WrapperNode
[2022-01-11 02:15:53,944 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 02:15:53,945 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 02:15:53,945 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 02:15:53,945 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 02:15:53,952 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:53,960 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:53,977 INFO  L137                Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 101
[2022-01-11 02:15:53,978 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 02:15:53,978 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 02:15:53,978 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 02:15:53,978 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 02:15:53,985 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:53,985 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:53,987 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:53,988 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:53,995 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:53,999 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:54,000 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:54,003 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 02:15:54,003 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 02:15:54,003 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 02:15:54,004 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 02:15:54,009 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (1/1) ...
[2022-01-11 02:15:54,015 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:15:54,022 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:15:54,033 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 02:15:54,034 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 02:15:54,063 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 02:15:54,063 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 02:15:54,063 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 02:15:54,063 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 02:15:54,125 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 02:15:54,126 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 02:15:54,586 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 02:15:54,591 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 02:15:54,592 INFO  L299             CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-11 02:15:54,593 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:15:54 BoogieIcfgContainer
[2022-01-11 02:15:54,593 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 02:15:54,594 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 02:15:54,594 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 02:15:54,597 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 02:15:54,600 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:15:54" (1/1) ...
[2022-01-11 02:15:54,701 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:15:54 BasicIcfg
[2022-01-11 02:15:54,701 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 02:15:54,704 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 02:15:54,704 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 02:15:54,707 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 02:15:54,707 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:15:53" (1/4) ...
[2022-01-11 02:15:54,708 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f65e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:15:54, skipping insertion in model container
[2022-01-11 02:15:54,708 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:15:53" (2/4) ...
[2022-01-11 02:15:54,709 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f65e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:15:54, skipping insertion in model container
[2022-01-11 02:15:54,709 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:15:54" (3/4) ...
[2022-01-11 02:15:54,709 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f65e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:15:54, skipping insertion in model container
[2022-01-11 02:15:54,710 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:15:54" (4/4) ...
[2022-01-11 02:15:54,710 INFO  L111   eAbstractionObserver]: Analyzing ICFG lcm1.cTransformedIcfg
[2022-01-11 02:15:54,716 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 02:15:54,716 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations.
[2022-01-11 02:15:54,768 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 02:15:54,774 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 02:15:54,774 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2022-01-11 02:15:54,791 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 40 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 39 states have internal predecessors, (57), 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 02:15:54,795 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-11 02:15:54,795 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:15:54,795 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:15:54,796 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:15:54,801 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:15:54,801 INFO  L85        PathProgramCache]: Analyzing trace with hash -851390570, now seen corresponding path program 1 times
[2022-01-11 02:15:54,808 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:15:54,809 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236654236]
[2022-01-11 02:15:54,810 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:15:54,810 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:15:54,914 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:15:54,976 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 02:15:54,977 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:15:54,977 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236654236]
[2022-01-11 02:15:54,978 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236654236] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:15:54,978 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:15:54,978 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-11 02:15:54,980 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581888560]
[2022-01-11 02:15:54,981 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:15:54,984 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-11 02:15:54,984 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:15:55,011 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-11 02:15:55,013 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 02:15:55,015 INFO  L87              Difference]: Start difference. First operand  has 40 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:15:55,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:15:55,037 INFO  L93              Difference]: Finished difference Result 77 states and 110 transitions.
[2022-01-11 02:15:55,038 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-11 02:15:55,039 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2022-01-11 02:15:55,039 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:15:55,045 INFO  L225             Difference]: With dead ends: 77
[2022-01-11 02:15:55,045 INFO  L226             Difference]: Without dead ends: 36
[2022-01-11 02:15:55,049 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 02:15:55,052 INFO  L933         BasicCegarLoop]: 42 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, 42 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 02:15:55,053 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 02:15:55,068 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-01-11 02:15:55,086 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2022-01-11 02:15:55,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:15:55,089 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions.
[2022-01-11 02:15:55,090 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 13
[2022-01-11 02:15:55,090 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:15:55,091 INFO  L470      AbstractCegarLoop]: Abstraction has 36 states and 38 transitions.
[2022-01-11 02:15:55,091 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:15:55,092 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions.
[2022-01-11 02:15:55,093 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-11 02:15:55,093 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:15:55,093 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:15:55,093 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 02:15:55,094 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:15:55,096 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:15:55,096 INFO  L85        PathProgramCache]: Analyzing trace with hash 727598106, now seen corresponding path program 1 times
[2022-01-11 02:15:55,097 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:15:55,097 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087538434]
[2022-01-11 02:15:55,097 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:15:55,097 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:15:55,138 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:15:55,139 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199344886]
[2022-01-11 02:15:55,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:15:55,139 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:15:55,140 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:15:55,142 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 02:15:55,143 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 02:15:55,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:15:55,237 INFO  L263         TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-11 02:15:55,242 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:15:55,482 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 02:15:55,482 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-11 02:15:55,483 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:15:55,483 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087538434]
[2022-01-11 02:15:55,483 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:15:55,483 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199344886]
[2022-01-11 02:15:55,483 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [199344886] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:15:55,484 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:15:55,484 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-11 02:15:55,484 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91379181]
[2022-01-11 02:15:55,485 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:15:55,485 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-11 02:15:55,485 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:15:55,486 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-11 02:15:55,486 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-11 02:15:55,486 INFO  L87              Difference]: Start difference. First operand 36 states and 38 transitions. Second operand  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:15:56,009 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:15:56,009 INFO  L93              Difference]: Finished difference Result 63 states and 67 transitions.
[2022-01-11 02:15:56,010 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-11 02:15:56,010 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2022-01-11 02:15:56,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:15:56,012 INFO  L225             Difference]: With dead ends: 63
[2022-01-11 02:15:56,012 INFO  L226             Difference]: Without dead ends: 57
[2022-01-11 02:15:56,012 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-11 02:15:56,013 INFO  L933         BasicCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-11 02:15:56,014 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 61 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-11 02:15:56,014 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2022-01-11 02:15:56,019 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48.
[2022-01-11 02:15:56,020 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 47 states have internal predecessors, (53), 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 02:15:56,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions.
[2022-01-11 02:15:56,021 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 13
[2022-01-11 02:15:56,021 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:15:56,021 INFO  L470      AbstractCegarLoop]: Abstraction has 48 states and 53 transitions.
[2022-01-11 02:15:56,021 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:15:56,021 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions.
[2022-01-11 02:15:56,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-11 02:15:56,022 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:15:56,022 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:15:56,043 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-11 02:15:56,231 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 02:15:56,232 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:15:56,232 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:15:56,233 INFO  L85        PathProgramCache]: Analyzing trace with hash 237661813, now seen corresponding path program 1 times
[2022-01-11 02:15:56,233 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:15:56,233 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521431979]
[2022-01-11 02:15:56,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:15:56,233 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:15:56,255 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:15:56,255 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414443597]
[2022-01-11 02:15:56,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:15:56,256 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:15:56,256 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:15:56,257 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 02:15:56,261 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 02:15:56,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:15:56,330 INFO  L263         TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core
[2022-01-11 02:15:56,332 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:16:04,453 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 02:16:04,453 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-11 02:16:04,454 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:16:04,454 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521431979]
[2022-01-11 02:16:04,454 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:16:04,454 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414443597]
[2022-01-11 02:16:04,454 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414443597] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:16:04,454 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:16:04,455 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2022-01-11 02:16:04,455 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446321087]
[2022-01-11 02:16:04,455 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:16:04,455 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-11 02:16:04,455 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:16:04,456 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-11 02:16:04,456 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2022-01-11 02:16:04,456 INFO  L87              Difference]: Start difference. First operand 48 states and 53 transitions. Second operand  has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:16:25,514 WARN  L228               SmtUtils]: Spent 15.90s on a formula simplification. DAG size of input: 44 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-11 02:16:26,886 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:16:28,427 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:16:30,438 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:16:32,404 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:16:33,130 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:16:33,130 INFO  L93              Difference]: Finished difference Result 78 states and 84 transitions.
[2022-01-11 02:16:33,130 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-11 02:16:33,130 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2022-01-11 02:16:33,131 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:16:33,131 INFO  L225             Difference]: With dead ends: 78
[2022-01-11 02:16:33,131 INFO  L226             Difference]: Without dead ends: 70
[2022-01-11 02:16:33,132 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272
[2022-01-11 02:16:33,133 INFO  L933         BasicCegarLoop]: 18 mSDtfsCounter, 133 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time
[2022-01-11 02:16:33,134 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 140 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 126 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time]
[2022-01-11 02:16:33,134 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2022-01-11 02:16:33,146 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60.
[2022-01-11 02:16:33,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 59 states have internal predecessors, (67), 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 02:16:33,148 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions.
[2022-01-11 02:16:33,148 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 17
[2022-01-11 02:16:33,148 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:16:33,148 INFO  L470      AbstractCegarLoop]: Abstraction has 60 states and 67 transitions.
[2022-01-11 02:16:33,148 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:16:33,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions.
[2022-01-11 02:16:33,149 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-01-11 02:16:33,149 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:16:33,149 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:16:33,183 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-11 02:16:33,379 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 02:16:33,380 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:16:33,380 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:16:33,380 INFO  L85        PathProgramCache]: Analyzing trace with hash 269014583, now seen corresponding path program 1 times
[2022-01-11 02:16:33,381 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:16:33,381 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328177304]
[2022-01-11 02:16:33,381 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:16:33,381 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:16:33,408 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:16:33,408 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512331930]
[2022-01-11 02:16:33,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:16:33,408 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:16:33,408 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:16:33,415 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 02:16:33,417 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 02:16:34,496 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:16:34,499 INFO  L263         TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 37 conjunts are in the unsatisfiable core
[2022-01-11 02:16:34,501 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:16:35,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:16:35,299 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:16:37,330 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:16:37,330 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:16:37,330 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328177304]
[2022-01-11 02:16:37,331 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 02:16:37,331 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512331930]
[2022-01-11 02:16:37,331 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [512331930] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:16:37,331 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-11 02:16:37,331 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 13
[2022-01-11 02:16:37,331 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51188857]
[2022-01-11 02:16:37,332 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:16:37,332 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-01-11 02:16:37,332 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:16:37,332 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-01-11 02:16:37,333 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2022-01-11 02:16:37,333 INFO  L87              Difference]: Start difference. First operand 60 states and 67 transitions. Second operand  has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 02:16:41,056 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:16:45,777 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:16:48,549 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:16:50,555 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:16:52,560 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:16:54,816 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-11 02:16:55,747 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:16:55,748 INFO  L93              Difference]: Finished difference Result 113 states and 127 transitions.
[2022-01-11 02:16:55,748 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2022-01-11 02:16:55,748 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 21
[2022-01-11 02:16:55,748 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:16:55,750 INFO  L225             Difference]: With dead ends: 113
[2022-01-11 02:16:55,750 INFO  L226             Difference]: Without dead ends: 107
[2022-01-11 02:16:55,751 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=201, Invalid=399, Unknown=0, NotChecked=0, Total=600
[2022-01-11 02:16:55,751 INFO  L933         BasicCegarLoop]: 28 mSDtfsCounter, 273 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 120 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time
[2022-01-11 02:16:55,752 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 85 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 132 Invalid, 6 Unknown, 0 Unchecked, 14.1s Time]
[2022-01-11 02:16:55,752 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2022-01-11 02:16:55,766 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84.
[2022-01-11 02:16:55,767 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 84 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 83 states have internal predecessors, (97), 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 02:16:55,767 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions.
[2022-01-11 02:16:55,768 INFO  L78                 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 21
[2022-01-11 02:16:55,768 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:16:55,768 INFO  L470      AbstractCegarLoop]: Abstraction has 84 states and 97 transitions.
[2022-01-11 02:16:55,768 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 02:16:55,768 INFO  L276                IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions.
[2022-01-11 02:16:55,769 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-11 02:16:55,769 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:16:55,769 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:16:55,776 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 02:16:55,975 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 02:16:55,976 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-11 02:16:55,976 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:16:55,976 INFO  L85        PathProgramCache]: Analyzing trace with hash 678041615, now seen corresponding path program 1 times
[2022-01-11 02:16:55,976 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:16:55,976 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014163937]
[2022-01-11 02:16:55,977 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:16:55,977 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:16:56,008 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 02:16:56,008 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269766558]
[2022-01-11 02:16:56,009 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:16:56,009 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:16:56,009 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:16:56,016 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 02:16:56,019 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 02:16:56,135 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:16:56,136 INFO  L263         TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-01-11 02:16:56,138 INFO  L286         TraceCheckSpWp]: Computing forward predicates...