/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/array-cav19/array_init_pair_sum_const.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 09:50:19,032 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 09:50:19,034 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 09:50:19,081 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 09:50:19,081 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 09:50:19,082 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 09:50:19,102 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 09:50:19,112 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 09:50:19,115 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 09:50:19,117 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 09:50:19,117 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 09:50:19,118 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 09:50:19,119 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 09:50:19,119 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 09:50:19,120 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 09:50:19,120 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 09:50:19,122 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 09:50:19,123 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 09:50:19,124 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 09:50:19,126 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 09:50:19,129 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 09:50:19,130 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 09:50:19,136 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 09:50:19,137 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 09:50:19,137 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 09:50:19,138 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 09:50:19,138 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 09:50:19,139 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 09:50:19,139 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 09:50:19,139 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 09:50:19,140 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 09:50:19,141 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 09:50:19,141 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 09:50:19,141 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 09:50:19,142 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 09:50:19,142 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 09:50:19,142 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 09:50:19,143 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 09:50:19,144 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 09:50:19,148 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf
[2022-01-10 09:50:19,179 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 09:50:19,180 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 09:50:19,180 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 09:50:19,180 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 09:50:19,181 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 09:50:19,181 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 09:50:19,181 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 09:50:19,182 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 09:50:19,182 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 09:50:19,182 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 09:50:19,183 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 09:50:19,183 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 09:50:19,183 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 09:50:19,183 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 09:50:19,183 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 09:50:19,183 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 09:50:19,184 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 09:50:19,184 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 09:50:19,184 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 09:50:19,184 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 09:50:19,184 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 09:50:19,184 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:50:19,185 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 09:50:19,185 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 09:50:19,185 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 09:50:19,185 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 09:50:19,185 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 09:50:19,185 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 09:50:19,185 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 09:50:19,186 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 09:50:19,186 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 09:50:19,186 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 09:50:19,187 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 09:50:19,187 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_BITWISE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 09:50:19,433 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 09:50:19,458 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 09:50:19,460 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 09:50:19,460 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 09:50:19,461 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 09:50:19,462 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_pair_sum_const.c
[2022-01-10 09:50:19,516 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effe9fd23/b85d42175be341ea85538ecb5359599e/FLAG5afd8631f
[2022-01-10 09:50:19,888 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 09:50:19,888 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_pair_sum_const.c
[2022-01-10 09:50:19,896 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effe9fd23/b85d42175be341ea85538ecb5359599e/FLAG5afd8631f
[2022-01-10 09:50:19,912 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effe9fd23/b85d42175be341ea85538ecb5359599e
[2022-01-10 09:50:19,917 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 09:50:19,919 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 09:50:19,921 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 09:50:19,922 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 09:50:19,925 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 09:50:19,925 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:50:19" (1/1) ...
[2022-01-10 09:50:19,926 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f456777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:19, skipping insertion in model container
[2022-01-10 09:50:19,927 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:50:19" (1/1) ...
[2022-01-10 09:50:19,933 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 09:50:19,946 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 09:50:20,108 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_pair_sum_const.c[416,429]
[2022-01-10 09:50:20,129 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:50:20,137 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 09:50:20,150 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_pair_sum_const.c[416,429]
[2022-01-10 09:50:20,166 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:50:20,182 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 09:50:20,183 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20 WrapperNode
[2022-01-10 09:50:20,183 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 09:50:20,184 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 09:50:20,184 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 09:50:20,184 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 09:50:20,189 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,204 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,223 INFO  L137                Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68
[2022-01-10 09:50:20,223 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 09:50:20,224 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 09:50:20,224 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 09:50:20,224 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 09:50:20,230 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,231 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,236 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,236 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,250 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,254 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,260 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,262 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 09:50:20,263 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 09:50:20,263 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 09:50:20,263 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 09:50:20,264 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,270 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:50:20,280 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:50:20,296 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 09:50:20,318 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 09:50:20,341 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 09:50:20,342 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 09:50:20,342 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-10 09:50:20,342 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 09:50:20,342 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 09:50:20,342 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 09:50:20,342 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 09:50:20,342 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-10 09:50:20,400 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 09:50:20,402 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 09:50:20,538 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 09:50:20,543 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 09:50:20,543 INFO  L299             CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-10 09:50:20,544 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:50:20 BoogieIcfgContainer
[2022-01-10 09:50:20,544 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 09:50:20,545 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 09:50:20,545 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 09:50:20,546 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 09:50:20,548 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:50:20" (1/1) ...
[2022-01-10 09:50:20,632 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:50:20 BasicIcfg
[2022-01-10 09:50:20,632 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 09:50:20,633 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 09:50:20,633 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 09:50:20,636 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 09:50:20,636 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:50:19" (1/4) ...
[2022-01-10 09:50:20,636 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1092d1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:50:20, skipping insertion in model container
[2022-01-10 09:50:20,636 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:50:20" (2/4) ...
[2022-01-10 09:50:20,637 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1092d1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:50:20, skipping insertion in model container
[2022-01-10 09:50:20,637 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:50:20" (3/4) ...
[2022-01-10 09:50:20,637 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1092d1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:50:20, skipping insertion in model container
[2022-01-10 09:50:20,637 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:50:20" (4/4) ...
[2022-01-10 09:50:20,638 INFO  L111   eAbstractionObserver]: Analyzing ICFG array_init_pair_sum_const.cTransformedIcfg
[2022-01-10 09:50:20,658 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 09:50:20,658 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 09:50:20,719 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 09:50:20,725 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 09:50:20,725 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 09:50:20,744 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:50:20,748 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-01-10 09:50:20,748 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:50:20,748 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:50:20,749 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:50:20,754 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:50:20,754 INFO  L85        PathProgramCache]: Analyzing trace with hash 1373313443, now seen corresponding path program 1 times
[2022-01-10 09:50:20,761 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:50:20,763 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026784213]
[2022-01-10 09:50:20,763 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:50:20,763 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:50:20,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:50:20,963 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 09:50:20,964 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:50:20,964 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026784213]
[2022-01-10 09:50:20,965 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026784213] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:50:20,965 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:50:20,965 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 09:50:20,967 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386722621]
[2022-01-10 09:50:20,967 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:50:20,970 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 09:50:20,971 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:50:20,999 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 09:50:21,000 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 09:50:21,001 INFO  L87              Difference]: Start difference. First operand  has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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)
[2022-01-10 09:50:21,013 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:50:21,014 INFO  L93              Difference]: Finished difference Result 32 states and 42 transitions.
[2022-01-10 09:50:21,014 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 09:50:21,015 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Word has length 9
[2022-01-10 09:50:21,016 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:50:21,021 INFO  L225             Difference]: With dead ends: 32
[2022-01-10 09:50:21,021 INFO  L226             Difference]: Without dead ends: 14
[2022-01-10 09:50:21,023 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 09:50:21,028 INFO  L933         BasicCegarLoop]: 20 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, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 09:50:21,028 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:50:21,043 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2022-01-10 09:50:21,051 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2022-01-10 09:50:21,052 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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)
[2022-01-10 09:50:21,053 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions.
[2022-01-10 09:50:21,054 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9
[2022-01-10 09:50:21,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:50:21,055 INFO  L470      AbstractCegarLoop]: Abstraction has 14 states and 16 transitions.
[2022-01-10 09:50:21,055 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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)
[2022-01-10 09:50:21,056 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions.
[2022-01-10 09:50:21,057 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-01-10 09:50:21,057 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:50:21,057 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:50:21,057 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 09:50:21,057 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:50:21,060 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:50:21,060 INFO  L85        PathProgramCache]: Analyzing trace with hash -2033226651, now seen corresponding path program 1 times
[2022-01-10 09:50:21,060 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:50:21,061 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562203904]
[2022-01-10 09:50:21,061 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:50:21,061 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:50:21,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:50:21,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 09:50:21,300 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:50:21,300 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562203904]
[2022-01-10 09:50:21,300 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562203904] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:50:21,300 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:50:21,300 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 09:50:21,300 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248743402]
[2022-01-10 09:50:21,301 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:50:21,301 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 09:50:21,302 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:50:21,302 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 09:50:21,302 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 09:50:21,303 INFO  L87              Difference]: Start difference. First operand 14 states and 16 transitions. Second operand  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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)
[2022-01-10 09:50:21,365 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:50:21,366 INFO  L93              Difference]: Finished difference Result 26 states and 30 transitions.
[2022-01-10 09:50:21,366 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 09:50:21,366 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) Word has length 9
[2022-01-10 09:50:21,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:50:21,367 INFO  L225             Difference]: With dead ends: 26
[2022-01-10 09:50:21,367 INFO  L226             Difference]: Without dead ends: 16
[2022-01-10 09:50:21,368 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 09:50:21,369 INFO  L933         BasicCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 09:50:21,369 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 09:50:21,370 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2022-01-10 09:50:21,373 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2022-01-10 09:50:21,373 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:50:21,373 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions.
[2022-01-10 09:50:21,374 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9
[2022-01-10 09:50:21,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:50:21,374 INFO  L470      AbstractCegarLoop]: Abstraction has 15 states and 17 transitions.
[2022-01-10 09:50:21,374 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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)
[2022-01-10 09:50:21,374 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions.
[2022-01-10 09:50:21,375 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 09:50:21,375 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:50:21,375 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:50:21,375 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 09:50:21,375 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:50:21,376 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:50:21,376 INFO  L85        PathProgramCache]: Analyzing trace with hash -76755229, now seen corresponding path program 1 times
[2022-01-10 09:50:21,376 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:50:21,376 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55865980]
[2022-01-10 09:50:21,376 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:50:21,377 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:50:21,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:50:21,573 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 09:50:21,573 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:50:21,573 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55865980]
[2022-01-10 09:50:21,573 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55865980] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:50:21,574 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:50:21,574 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 09:50:21,574 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847763836]
[2022-01-10 09:50:21,574 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:50:21,574 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 09:50:21,574 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:50:21,575 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 09:50:21,575 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 09:50:21,575 INFO  L87              Difference]: Start difference. First operand 15 states and 17 transitions. Second operand  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:50:21,646 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:50:21,646 INFO  L93              Difference]: Finished difference Result 25 states and 28 transitions.
[2022-01-10 09:50:21,647 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 09:50:21,647 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11
[2022-01-10 09:50:21,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:50:21,647 INFO  L225             Difference]: With dead ends: 25
[2022-01-10 09:50:21,647 INFO  L226             Difference]: Without dead ends: 18
[2022-01-10 09:50:21,648 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 09:50:21,649 INFO  L933         BasicCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 09:50:21,649 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 15 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 09:50:21,650 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2022-01-10 09:50:21,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16.
[2022-01-10 09:50:21,653 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:50:21,653 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions.
[2022-01-10 09:50:21,653 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11
[2022-01-10 09:50:21,653 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:50:21,653 INFO  L470      AbstractCegarLoop]: Abstraction has 16 states and 18 transitions.
[2022-01-10 09:50:21,654 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:50:21,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions.
[2022-01-10 09:50:21,654 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 09:50:21,654 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:50:21,654 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:50:21,654 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 09:50:21,655 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:50:21,655 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:50:21,655 INFO  L85        PathProgramCache]: Analyzing trace with hash 163079489, now seen corresponding path program 1 times
[2022-01-10 09:50:21,655 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:50:21,655 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691651326]
[2022-01-10 09:50:21,656 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:50:21,656 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:50:21,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:50:21,833 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 09:50:21,834 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:50:21,834 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691651326]
[2022-01-10 09:50:21,835 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691651326] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:50:21,835 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379855224]
[2022-01-10 09:50:21,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:50:21,835 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:50:21,835 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:50:21,843 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 09:50:21,874 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 09:50:22,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:50:22,008 INFO  L263         TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-01-10 09:50:22,012 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:50:22,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 09:50:22,234 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 09:50:22,407 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 09:50:22,408 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379855224] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 09:50:22,408 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 09:50:22,408 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 6] total 15
[2022-01-10 09:50:22,408 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901533400]
[2022-01-10 09:50:22,408 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 09:50:22,409 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-10 09:50:22,409 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:50:22,409 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-10 09:50:22,410 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210
[2022-01-10 09:50:22,410 INFO  L87              Difference]: Start difference. First operand 16 states and 18 transitions. Second operand  has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:50:22,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:50:22,732 INFO  L93              Difference]: Finished difference Result 43 states and 51 transitions.
[2022-01-10 09:50:22,732 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2022-01-10 09:50:22,733 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2022-01-10 09:50:22,733 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:50:22,733 INFO  L225             Difference]: With dead ends: 43
[2022-01-10 09:50:22,733 INFO  L226             Difference]: Without dead ends: 26
[2022-01-10 09:50:22,734 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380
[2022-01-10 09:50:22,736 INFO  L933         BasicCegarLoop]: 8 mSDtfsCounter, 25 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-10 09:50:22,736 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 42 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-10 09:50:22,737 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2022-01-10 09:50:22,756 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24.
[2022-01-10 09:50:22,757 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:50:22,757 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions.
[2022-01-10 09:50:22,757 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13
[2022-01-10 09:50:22,757 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:50:22,758 INFO  L470      AbstractCegarLoop]: Abstraction has 24 states and 26 transitions.
[2022-01-10 09:50:22,758 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:50:22,758 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions.
[2022-01-10 09:50:22,758 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-01-10 09:50:22,759 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:50:22,759 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:50:22,765 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-10 09:50:22,959 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:50:22,960 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:50:22,960 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:50:22,960 INFO  L85        PathProgramCache]: Analyzing trace with hash 1199163801, now seen corresponding path program 2 times
[2022-01-10 09:50:22,961 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:50:22,961 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895257615]
[2022-01-10 09:50:22,961 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:50:22,961 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:50:23,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:50:23,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-01-10 09:50:23,220 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:50:23,220 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895257615]
[2022-01-10 09:50:23,220 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895257615] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:50:23,220 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298297182]
[2022-01-10 09:50:23,220 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 09:50:23,221 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:50:23,221 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:50:23,222 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 09:50:23,228 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 09:50:23,357 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 09:50:23,357 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 09:50:23,359 INFO  L263         TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 14 conjunts are in the unsatisfiable core
[2022-01-10 09:50:23,360 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:50:23,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 09:50:23,503 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 09:50:23,966 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 09:50:23,966 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [298297182] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 09:50:23,966 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 09:50:23,966 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 19
[2022-01-10 09:50:23,966 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277124459]
[2022-01-10 09:50:23,967 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 09:50:23,967 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-01-10 09:50:23,967 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:50:23,968 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-01-10 09:50:23,968 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342
[2022-01-10 09:50:23,968 INFO  L87              Difference]: Start difference. First operand 24 states and 26 transitions. Second operand  has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:50:27,012 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:50:27,013 INFO  L93              Difference]: Finished difference Result 74 states and 83 transitions.
[2022-01-10 09:50:27,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-01-10 09:50:27,013 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2022-01-10 09:50:27,013 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:50:27,014 INFO  L225             Difference]: With dead ends: 74
[2022-01-10 09:50:27,014 INFO  L226             Difference]: Without dead ends: 61
[2022-01-10 09:50:27,015 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600
[2022-01-10 09:50:27,015 INFO  L933         BasicCegarLoop]: 12 mSDtfsCounter, 240 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2022-01-10 09:50:27,016 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 83 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2022-01-10 09:50:27,016 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2022-01-10 09:50:27,026 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 36.
[2022-01-10 09:50:27,027 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 35 states have (on average 1.0857142857142856) 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)
[2022-01-10 09:50:27,027 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions.
[2022-01-10 09:50:27,027 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21
[2022-01-10 09:50:27,028 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:50:27,028 INFO  L470      AbstractCegarLoop]: Abstraction has 36 states and 38 transitions.
[2022-01-10 09:50:27,028 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:50:27,028 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions.
[2022-01-10 09:50:27,029 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-10 09:50:27,029 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:50:27,029 INFO  L514         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:50:27,037 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-10 09:50:27,237 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:50:27,238 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:50:27,238 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:50:27,238 INFO  L85        PathProgramCache]: Analyzing trace with hash -1662101619, now seen corresponding path program 3 times
[2022-01-10 09:50:27,239 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:50:27,239 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071617573]
[2022-01-10 09:50:27,239 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:50:27,239 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:50:27,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:50:27,506 INFO  L134       CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2022-01-10 09:50:27,507 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:50:27,507 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071617573]
[2022-01-10 09:50:27,507 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071617573] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:50:27,507 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539166375]
[2022-01-10 09:50:27,507 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 09:50:27,507 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:50:27,508 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:50:27,512 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 09:50:27,512 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-10 09:50:33,837 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2022-01-10 09:50:33,837 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 09:50:33,853 INFO  L263         TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 42 conjunts are in the unsatisfiable core
[2022-01-10 09:50:33,856 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:51:29,635 INFO  L134       CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 32 refuted. 4 times theorem prover too weak. 36 trivial. 0 not checked.
[2022-01-10 09:51:29,635 INFO  L328         TraceCheckSpWp]: Computing backward predicates...