/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:16:58,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:16:58,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:16:58,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:16:58,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:16:58,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:16:58,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:16:58,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:16:58,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:16:58,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:16:58,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:16:58,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:16:58,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:16:58,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:16:58,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:16:58,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:16:58,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:16:58,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:16:58,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:16:58,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:16:58,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:16:58,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:16:58,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:16:58,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:16:58,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 20:16:58,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 20:16:58,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 20:16:58,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 20:16:58,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 20:16:58,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 20:16:58,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:16:58,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:16:58,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:16:58,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:16:58,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:16:58,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:16:58,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:16:58,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:16:58,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:16:58,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:16:58,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:16:58,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:16:58,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:16:58,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:16:58,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:16:58,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:16:58,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:16:58,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:16:58,169 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:16:58,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:16:58,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:16:58,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:16:58,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:16:58,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:16:58,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:16:58,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:16:58,170 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:16:58,170 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:16:58,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:16:58,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:16:58,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:16:58,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:16:58,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:16:58,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:16:58,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:16:58,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:16:58,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:16:58,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:16:58,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:16:58,172 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:16:58,172 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:16:58,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:16:58,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:16:58,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:16:58,173 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:16:58,173 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:16:58,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:16:58,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:16:58,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:16:58,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:16:58,406 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:16:58,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2022-01-10 20:16:58,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e238af49c/4d1c5d697bdf44b48eea0626a2cfa018/FLAGdcb867ead [2022-01-10 20:16:58,813 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:16:58,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2022-01-10 20:16:58,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e238af49c/4d1c5d697bdf44b48eea0626a2cfa018/FLAGdcb867ead [2022-01-10 20:16:59,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e238af49c/4d1c5d697bdf44b48eea0626a2cfa018 [2022-01-10 20:16:59,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:16:59,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:16:59,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:16:59,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:16:59,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:16:59,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62aade41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59, skipping insertion in model container [2022-01-10 20:16:59,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:16:59,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:16:59,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2022-01-10 20:16:59,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:16:59,418 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:16:59,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2022-01-10 20:16:59,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:16:59,460 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:16:59,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59 WrapperNode [2022-01-10 20:16:59,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:16:59,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:16:59,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:16:59,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:16:59,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,496 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 115 [2022-01-10 20:16:59,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:16:59,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:16:59,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:16:59,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:16:59,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:16:59,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:16:59,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:16:59,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:16:59,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:16:59,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:16:59,562 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 20:16:59,629 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 20:16:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:16:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:16:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:16:59,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:16:59,711 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:16:59,712 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:16:59,873 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:16:59,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:16:59,877 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 20:16:59,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:16:59 BoogieIcfgContainer [2022-01-10 20:16:59,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:16:59,878 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:16:59,878 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:16:59,879 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:16:59,881 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:16:59" (1/1) ... [2022-01-10 20:16:59,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:16:59 BasicIcfg [2022-01-10 20:16:59,952 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:16:59,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:16:59,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:16:59,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:16:59,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:16:59" (1/4) ... [2022-01-10 20:16:59,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161f4819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:16:59, skipping insertion in model container [2022-01-10 20:16:59,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:16:59" (2/4) ... [2022-01-10 20:16:59,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161f4819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:16:59, skipping insertion in model container [2022-01-10 20:16:59,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:16:59" (3/4) ... [2022-01-10 20:16:59,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161f4819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:16:59, skipping insertion in model container [2022-01-10 20:16:59,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:16:59" (4/4) ... [2022-01-10 20:16:59,956 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.cTransformedIcfg [2022-01-10 20:16:59,959 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:16:59,959 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 20:16:59,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:16:59,989 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 20:16:59,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 20:16:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 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 20:17:00,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 20:17:00,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:17:00,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:17:00,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:17:00,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:17:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1348246704, now seen corresponding path program 1 times [2022-01-10 20:17:00,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:17:00,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163073126] [2022-01-10 20:17:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:00,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:17:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:00,262 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 20:17:00,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:17:00,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163073126] [2022-01-10 20:17:00,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163073126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:17:00,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:17:00,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:17:00,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569713584] [2022-01-10 20:17:00,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:17:00,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:17:00,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:17:00,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:17:00,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:17:00,293 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 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 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:17:00,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:17:00,373 INFO L93 Difference]: Finished difference Result 52 states and 90 transitions. [2022-01-10 20:17:00,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:17:00,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 20:17:00,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:17:00,382 INFO L225 Difference]: With dead ends: 52 [2022-01-10 20:17:00,382 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 20:17:00,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 20:17:00,390 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:17:00,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:17:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 20:17:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-10 20:17:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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 20:17:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-01-10 20:17:00,409 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 23 [2022-01-10 20:17:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:17:00,410 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-01-10 20:17:00,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:17:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-01-10 20:17:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 20:17:00,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:17:00,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:17:00,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:17:00,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:17:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:17:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash -939422479, now seen corresponding path program 1 times [2022-01-10 20:17:00,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:17:00,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216315297] [2022-01-10 20:17:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:00,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:17:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:00,590 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 20:17:00,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:17:00,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216315297] [2022-01-10 20:17:00,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216315297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:17:00,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:17:00,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 20:17:00,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023547299] [2022-01-10 20:17:00,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:17:00,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 20:17:00,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:17:00,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 20:17:00,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:17:00,593 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:17:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:17:00,934 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2022-01-10 20:17:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 20:17:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 20:17:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:17:00,935 INFO L225 Difference]: With dead ends: 46 [2022-01-10 20:17:00,935 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 20:17:00,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-01-10 20:17:00,937 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:17:00,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 33 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:17:00,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 20:17:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-10 20:17:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 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 20:17:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-01-10 20:17:00,942 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2022-01-10 20:17:00,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:17:00,943 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-01-10 20:17:00,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:17:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-01-10 20:17:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 20:17:00,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:17:00,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:17:00,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:17:00,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:17:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:17:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -842852721, now seen corresponding path program 1 times [2022-01-10 20:17:00,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:17:00,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927317818] [2022-01-10 20:17:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:00,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:17:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:01,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:17:01,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927317818] [2022-01-10 20:17:01,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927317818] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:17:01,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575225376] [2022-01-10 20:17:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:01,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:17:01,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:17:01,116 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 20:17:01,125 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 20:17:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:01,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:17:01,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:17:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:01,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:17:01,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575225376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:17:01,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 20:17:01,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-01-10 20:17:01,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442128130] [2022-01-10 20:17:01,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:17:01,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:17:01,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:17:01,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:17:01,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-01-10 20:17:01,515 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:17:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:17:01,781 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-01-10 20:17:01,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:17:01,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-10 20:17:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:17:01,782 INFO L225 Difference]: With dead ends: 32 [2022-01-10 20:17:01,782 INFO L226 Difference]: Without dead ends: 29 [2022-01-10 20:17:01,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-01-10 20:17:01,783 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 20:17:01,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 7 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 20:17:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-10 20:17:01,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-01-10 20:17:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:17:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-01-10 20:17:01,789 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 25 [2022-01-10 20:17:01,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:17:01,790 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-01-10 20:17:01,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:17:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-01-10 20:17:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 20:17:01,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:17:01,791 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, 1, 1, 1, 1, 1, 1] [2022-01-10 20:17:01,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:17:01,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:17:01,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:17:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:17:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1766401292, now seen corresponding path program 1 times [2022-01-10 20:17:01,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:17:01,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182496364] [2022-01-10 20:17:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:01,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:17:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:02,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:17:02,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182496364] [2022-01-10 20:17:02,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182496364] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:17:02,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849845123] [2022-01-10 20:17:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:02,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:17:02,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:17:02,241 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 20:17:02,279 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 20:17:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:02,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 20:17:02,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:17:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:03,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:17:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:04,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849845123] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:17:04,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:17:04,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 6] total 21 [2022-01-10 20:17:04,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634494001] [2022-01-10 20:17:04,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:17:04,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 20:17:04,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:17:04,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 20:17:04,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2022-01-10 20:17:04,823 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 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) [2022-01-10 20:17:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:17:06,130 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-01-10 20:17:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 20:17:06,131 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 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) Word has length 27 [2022-01-10 20:17:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:17:06,131 INFO L225 Difference]: With dead ends: 40 [2022-01-10 20:17:06,131 INFO L226 Difference]: Without dead ends: 34 [2022-01-10 20:17:06,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 20:17:06,133 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 44 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 20:17:06,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 31 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 243 Invalid, 0 Unknown, 28 Unchecked, 0.7s Time] [2022-01-10 20:17:06,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-10 20:17:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-01-10 20:17:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 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) [2022-01-10 20:17:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-01-10 20:17:06,138 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 27 [2022-01-10 20:17:06,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:17:06,139 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-01-10 20:17:06,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 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) [2022-01-10 20:17:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-01-10 20:17:06,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 20:17:06,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:17:06,139 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:17:06,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 20:17:06,343 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,SelfDestructingSolverStorable3 [2022-01-10 20:17:06,344 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:17:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:17:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1184570340, now seen corresponding path program 2 times [2022-01-10 20:17:06,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:17:06,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113362246] [2022-01-10 20:17:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:06,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:17:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 20:17:06,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:17:06,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113362246] [2022-01-10 20:17:06,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113362246] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:17:06,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767959129] [2022-01-10 20:17:06,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 20:17:06,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:17:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:17:06,527 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 20:17:06,544 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 20:17:06,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 20:17:06,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 20:17:06,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-10 20:17:06,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:17:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 10 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:54,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:18:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:18:12,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767959129] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:18:12,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:18:12,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 27 [2022-01-10 20:18:12,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559059175] [2022-01-10 20:18:12,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:18:12,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-10 20:18:12,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:18:12,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-10 20:18:12,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=528, Unknown=7, NotChecked=0, Total=702 [2022-01-10 20:18:12,969 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 27 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 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)