./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector-loops/diamond_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector-loops/diamond_2-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfc9b98f01b5740214418c1e274ef62d42bd44052b6c9ba666982a6bcd7671c6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:42:44,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:42:44,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:42:44,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:42:44,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:42:44,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:42:44,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:42:44,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:42:44,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:42:44,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:42:44,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:42:44,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:42:44,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:42:44,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:42:44,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:42:44,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:42:44,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:42:44,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:42:44,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:42:44,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:42:44,334 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:42:44,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:42:44,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:42:44,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:42:44,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:42:44,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:42:44,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:42:44,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:42:44,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:42:44,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:42:44,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:42:44,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:42:44,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:42:44,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:42:44,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:42:44,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:42:44,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:42:44,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:42:44,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:42:44,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:42:44,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:42:44,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:42:44,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:42:44,376 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:42:44,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:42:44,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:42:44,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:42:44,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:42:44,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:42:44,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:42:44,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:42:44,378 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:42:44,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:42:44,379 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:42:44,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:42:44,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:42:44,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:42:44,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:42:44,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:42:44,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:42:44,380 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:42:44,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:42:44,381 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:42:44,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:42:44,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:42:44,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:42:44,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:42:44,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:42:44,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:42:44,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:42:44,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:42:44,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:42:44,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:42:44,382 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:42:44,383 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:42:44,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:42:44,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfc9b98f01b5740214418c1e274ef62d42bd44052b6c9ba666982a6bcd7671c6 [2022-07-11 23:42:44,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:42:44,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:42:44,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:42:44,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:42:44,575 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:42:44,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2022-07-11 23:42:44,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7283d5729/b2593eef34d5459b8f307f19b8bf9110/FLAGefa0ba0f5 [2022-07-11 23:42:44,975 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:42:44,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2022-07-11 23:42:44,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7283d5729/b2593eef34d5459b8f307f19b8bf9110/FLAGefa0ba0f5 [2022-07-11 23:42:44,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7283d5729/b2593eef34d5459b8f307f19b8bf9110 [2022-07-11 23:42:44,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:42:44,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:42:44,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:42:44,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:42:44,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:42:44,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:42:44" (1/1) ... [2022-07-11 23:42:44,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11914492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:44, skipping insertion in model container [2022-07-11 23:42:44,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:42:44" (1/1) ... [2022-07-11 23:42:45,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:42:45,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:42:45,102 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-loops/diamond_2-1.c[373,386] [2022-07-11 23:42:45,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:42:45,138 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:42:45,148 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-loops/diamond_2-1.c[373,386] [2022-07-11 23:42:45,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:42:45,166 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:42:45,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45 WrapperNode [2022-07-11 23:42:45,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:42:45,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:42:45,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:42:45,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:42:45,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (1/1) ... [2022-07-11 23:42:45,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (1/1) ... [2022-07-11 23:42:45,199 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2022-07-11 23:42:45,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:42:45,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:42:45,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:42:45,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:42:45,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (1/1) ... [2022-07-11 23:42:45,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (1/1) ... [2022-07-11 23:42:45,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (1/1) ... [2022-07-11 23:42:45,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (1/1) ... [2022-07-11 23:42:45,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (1/1) ... [2022-07-11 23:42:45,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (1/1) ... [2022-07-11 23:42:45,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (1/1) ... [2022-07-11 23:42:45,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:42:45,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:42:45,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:42:45,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:42:45,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (1/1) ... [2022-07-11 23:42:45,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:42:45,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:42:45,247 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) [2022-07-11 23:42:45,248 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 [2022-07-11 23:42:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:42:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:42:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:42:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:42:45,311 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:42:45,312 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:42:45,432 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:42:45,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:42:45,437 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-11 23:42:45,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:42:45 BoogieIcfgContainer [2022-07-11 23:42:45,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:42:45,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:42:45,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:42:45,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:42:45,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:42:44" (1/3) ... [2022-07-11 23:42:45,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbef30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:42:45, skipping insertion in model container [2022-07-11 23:42:45,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:42:45" (2/3) ... [2022-07-11 23:42:45,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbef30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:42:45, skipping insertion in model container [2022-07-11 23:42:45,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:42:45" (3/3) ... [2022-07-11 23:42:45,443 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2022-07-11 23:42:45,452 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:42:45,452 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:42:45,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:42:45,484 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c9a31fa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@14d0b35 [2022-07-11 23:42:45,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:42:45,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 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) [2022-07-11 23:42:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-11 23:42:45,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:42:45,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-11 23:42:45,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:42:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:42:45,495 INFO L85 PathProgramCache]: Analyzing trace with hash 891600039, now seen corresponding path program 1 times [2022-07-11 23:42:45,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:42:45,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750757138] [2022-07-11 23:42:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:42:45,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:42:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:42:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:42:45,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:42:45,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750757138] [2022-07-11 23:42:45,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750757138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:42:45,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:42:45,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 23:42:45,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046727945] [2022-07-11 23:42:45,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:42:45,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 23:42:45,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:42:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 23:42:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:42:45,624 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-11 23:42:45,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:42:45,638 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2022-07-11 23:42:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 23:42:45,639 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-07-11 23:42:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:42:45,645 INFO L225 Difference]: With dead ends: 29 [2022-07-11 23:42:45,645 INFO L226 Difference]: Without dead ends: 17 [2022-07-11 23:42:45,647 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:42:45,650 INFO L413 NwaCegarLoop]: 31 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, 31 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 [2022-07-11 23:42:45,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:42:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-11 23:42:45,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-11 23:42:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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) [2022-07-11 23:42:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2022-07-11 23:42:45,672 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2022-07-11 23:42:45,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:42:45,673 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2022-07-11 23:42:45,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-11 23:42:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2022-07-11 23:42:45,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-11 23:42:45,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:42:45,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-11 23:42:45,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:42:45,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:42:45,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:42:45,677 INFO L85 PathProgramCache]: Analyzing trace with hash 889693415, now seen corresponding path program 1 times [2022-07-11 23:42:45,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:42:45,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757102197] [2022-07-11 23:42:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:42:45,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:42:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:42:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:42:45,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:42:45,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757102197] [2022-07-11 23:42:45,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757102197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:42:45,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:42:45,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:42:45,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026843684] [2022-07-11 23:42:45,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:42:45,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:42:45,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:42:45,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:42:45,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:42:45,801 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-11 23:42:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:42:45,866 INFO L93 Difference]: Finished difference Result 23 states and 34 transitions. [2022-07-11 23:42:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:42:45,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-07-11 23:42:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:42:45,868 INFO L225 Difference]: With dead ends: 23 [2022-07-11 23:42:45,868 INFO L226 Difference]: Without dead ends: 19 [2022-07-11 23:42:45,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:42:45,869 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:42:45,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:42:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-11 23:42:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-07-11 23:42:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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) [2022-07-11 23:42:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2022-07-11 23:42:45,876 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 28 transitions. Word has length 6 [2022-07-11 23:42:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:42:45,876 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 28 transitions. [2022-07-11 23:42:45,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-11 23:42:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2022-07-11 23:42:45,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-11 23:42:45,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:42:45,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:42:45,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 23:42:45,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:42:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:42:45,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1797740634, now seen corresponding path program 1 times [2022-07-11 23:42:45,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:42:45,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131061715] [2022-07-11 23:42:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:42:45,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:42:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:42:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:42:45,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:42:45,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131061715] [2022-07-11 23:42:45,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131061715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:42:45,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:42:45,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:42:45,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101575128] [2022-07-11 23:42:45,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:42:45,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:42:45,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:42:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:42:45,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:42:45,907 INFO L87 Difference]: Start difference. First operand 18 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2022-07-11 23:42:45,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:42:45,988 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2022-07-11 23:42:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:42:45,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-11 23:42:45,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:42:45,989 INFO L225 Difference]: With dead ends: 48 [2022-07-11 23:42:45,990 INFO L226 Difference]: Without dead ends: 33 [2022-07-11 23:42:45,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:42:45,991 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:42:45,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 23 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:42:45,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-11 23:42:45,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-07-11 23:42:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:42:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2022-07-11 23:42:45,995 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 17 [2022-07-11 23:42:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:42:45,999 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2022-07-11 23:42:45,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2022-07-11 23:42:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2022-07-11 23:42:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-11 23:42:46,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:42:46,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:42:46,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-11 23:42:46,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:42:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:42:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash -170777494, now seen corresponding path program 1 times [2022-07-11 23:42:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:42:46,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566594308] [2022-07-11 23:42:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:42:46,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:42:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-11 23:42:46,045 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-11 23:42:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-11 23:42:46,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-11 23:42:46,069 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-11 23:42:46,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-11 23:42:46,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-11 23:42:46,073 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-11 23:42:46,075 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-11 23:42:46,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 11:42:46 BoogieIcfgContainer [2022-07-11 23:42:46,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-11 23:42:46,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-11 23:42:46,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-11 23:42:46,094 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-11 23:42:46,095 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:42:45" (3/4) ... [2022-07-11 23:42:46,096 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-11 23:42:46,119 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-11 23:42:46,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-11 23:42:46,119 INFO L158 Benchmark]: Toolchain (without parser) took 1127.70ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 63.5MB in the beginning and 95.1MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 23:42:46,119 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory was 48.9MB in the beginning and 48.8MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 23:42:46,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.52ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 63.2MB in the beginning and 103.7MB in the end (delta: -40.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-11 23:42:46,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.66ms. Allocated memory is still 127.9MB. Free memory was 103.7MB in the beginning and 102.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-11 23:42:46,120 INFO L158 Benchmark]: Boogie Preprocessor took 14.13ms. Allocated memory is still 127.9MB. Free memory was 102.0MB in the beginning and 100.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-11 23:42:46,121 INFO L158 Benchmark]: RCFGBuilder took 223.53ms. Allocated memory is still 127.9MB. Free memory was 100.5MB in the beginning and 90.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-11 23:42:46,121 INFO L158 Benchmark]: TraceAbstraction took 654.72ms. Allocated memory is still 127.9MB. Free memory was 89.5MB in the beginning and 97.2MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 23:42:46,121 INFO L158 Benchmark]: Witness Printer took 24.77ms. Allocated memory is still 127.9MB. Free memory was 96.5MB in the beginning and 95.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 23:42:46,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory was 48.9MB in the beginning and 48.8MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.52ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 63.2MB in the beginning and 103.7MB in the end (delta: -40.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.66ms. Allocated memory is still 127.9MB. Free memory was 103.7MB in the beginning and 102.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.13ms. Allocated memory is still 127.9MB. Free memory was 102.0MB in the beginning and 100.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 223.53ms. Allocated memory is still 127.9MB. Free memory was 100.5MB in the beginning and 90.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 654.72ms. Allocated memory is still 127.9MB. Free memory was 89.5MB in the beginning and 97.2MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 24.77ms. Allocated memory is still 127.9MB. Free memory was 96.5MB in the beginning and 95.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 VAL [x=0] [L18] COND FALSE !(y % 2 == 0) [L19] x += 2 VAL [x=2, y=1] [L21] COND FALSE !(y % 2 == 0) [L22] x -= 2 VAL [x=0, y=1] [L24] COND FALSE !(y % 2 == 0) [L25] x += 2 VAL [x=2, y=1] [L27] COND FALSE !(y % 2 == 0) [L28] x -= 2 VAL [x=0, y=1] [L30] COND FALSE !(y % 2 == 0) [L31] x += 2 VAL [x=2, y=1] [L33] COND FALSE !(y % 2 == 0) [L34] x -= 4 VAL [x=4294967294, y=1] [L36] COND FALSE !(y % 2 == 0) [L37] x += 4 VAL [x=2, y=1] [L39] COND FALSE !(y % 2 == 0) [L40] x += 2 VAL [x=4, y=1] [L42] COND FALSE !(y % 2 == 0) [L43] x -= 4 VAL [x=0, y=1] [L45] COND FALSE !(y % 2 == 0) [L46] x -= 4 VAL [x=4294967292, y=1] [L17] COND FALSE !(x < 99) VAL [x=4294967292, y=1] [L49] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 73 mSDtfsCounter, 49 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 37 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-11 23:42:46,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE