./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/s3_clnt_3.BV.c.cil-2a.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 f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/s3_clnt_3.BV.c.cil-2a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 20:01:30,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 20:01:30,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 20:01:30,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 20:01:30,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 20:01:30,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 20:01:30,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 20:01:30,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 20:01:30,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 20:01:30,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 20:01:30,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 20:01:30,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 20:01:30,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 20:01:30,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 20:01:30,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 20:01:30,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 20:01:30,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 20:01:30,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 20:01:30,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 20:01:30,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 20:01:30,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 20:01:30,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 20:01:30,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 20:01:30,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 20:01:30,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 20:01:30,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 20:01:30,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 20:01:30,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 20:01:30,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 20:01:30,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 20:01:30,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 20:01:30,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 20:01:30,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 20:01:30,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 20:01:30,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 20:01:30,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 20:01:30,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 20:01:30,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 20:01:30,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 20:01:30,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 20:01:30,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 20:01:30,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 20:01:30,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 20:01:30,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 20:01:30,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 20:01:30,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 20:01:30,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 20:01:30,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 20:01:30,480 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 20:01:30,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 20:01:30,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 20:01:30,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 20:01:30,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 20:01:30,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 20:01:30,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 20:01:30,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 20:01:30,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 20:01:30,482 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 20:01:30,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 20:01:30,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 20:01:30,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 20:01:30,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 20:01:30,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 20:01:30,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 20:01:30,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:01:30,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 20:01:30,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 20:01:30,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 20:01:30,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 20:01:30,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 20:01:30,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 20:01:30,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 20:01:30,486 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 [2021-08-25 20:01:30,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 20:01:30,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 20:01:30,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 20:01:30,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 20:01:30,871 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 20:01:30,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-08-25 20:01:30,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d08914259/9ac673aa616c4145a9c15f8ca44dd8e2/FLAG182cb236f [2021-08-25 20:01:31,486 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 20:01:31,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-08-25 20:01:31,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d08914259/9ac673aa616c4145a9c15f8ca44dd8e2/FLAG182cb236f [2021-08-25 20:01:31,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d08914259/9ac673aa616c4145a9c15f8ca44dd8e2 [2021-08-25 20:01:31,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 20:01:31,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 20:01:31,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 20:01:31,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 20:01:31,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 20:01:31,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:01:31" (1/1) ... [2021-08-25 20:01:31,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699a18e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:31, skipping insertion in model container [2021-08-25 20:01:31,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:01:31" (1/1) ... [2021-08-25 20:01:31,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 20:01:31,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 20:01:32,191 WARN L228 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/s3_clnt_3.BV.c.cil-2a.c[37452,37465] [2021-08-25 20:01:32,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:01:32,217 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 20:01:32,277 WARN L228 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/s3_clnt_3.BV.c.cil-2a.c[37452,37465] [2021-08-25 20:01:32,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:01:32,296 INFO L208 MainTranslator]: Completed translation [2021-08-25 20:01:32,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32 WrapperNode [2021-08-25 20:01:32,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 20:01:32,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 20:01:32,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 20:01:32,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 20:01:32,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (1/1) ... [2021-08-25 20:01:32,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (1/1) ... [2021-08-25 20:01:32,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 20:01:32,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 20:01:32,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 20:01:32,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 20:01:32,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (1/1) ... [2021-08-25 20:01:32,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (1/1) ... [2021-08-25 20:01:32,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (1/1) ... [2021-08-25 20:01:32,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (1/1) ... [2021-08-25 20:01:32,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (1/1) ... [2021-08-25 20:01:32,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (1/1) ... [2021-08-25 20:01:32,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (1/1) ... [2021-08-25 20:01:32,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 20:01:32,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 20:01:32,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 20:01:32,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 20:01:32,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (1/1) ... [2021-08-25 20:01:32,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:01:32,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:01:32,462 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) [2021-08-25 20:01:32,475 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 [2021-08-25 20:01:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 20:01:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 20:01:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 20:01:32,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 20:01:32,708 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-25 20:01:33,113 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-08-25 20:01:33,113 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-08-25 20:01:33,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 20:01:33,120 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-25 20:01:33,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:01:33 BoogieIcfgContainer [2021-08-25 20:01:33,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 20:01:33,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 20:01:33,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 20:01:33,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 20:01:33,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:01:31" (1/3) ... [2021-08-25 20:01:33,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626802ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:01:33, skipping insertion in model container [2021-08-25 20:01:33,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:32" (2/3) ... [2021-08-25 20:01:33,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626802ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:01:33, skipping insertion in model container [2021-08-25 20:01:33,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:01:33" (3/3) ... [2021-08-25 20:01:33,131 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2021-08-25 20:01:33,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 20:01:33,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 20:01:33,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 20:01:33,184 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-25 20:01:33,185 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 20:01:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 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) [2021-08-25 20:01:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-25 20:01:33,205 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:33,206 INFO L512 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] [2021-08-25 20:01:33,206 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:33,211 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2021-08-25 20:01:33,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:01:33,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109407046] [2021-08-25 20:01:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:33,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:01:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:01:33,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:01:33,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109407046] [2021-08-25 20:01:33,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109407046] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:33,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:33,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:01:33,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285823382] [2021-08-25 20:01:33,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:33,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:01:33,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:33,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:33,439 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 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 8.333333333333334) internal successors, (25), 3 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) [2021-08-25 20:01:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:33,649 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2021-08-25 20:01:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:33,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 [2021-08-25 20:01:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:33,659 INFO L225 Difference]: With dead ends: 247 [2021-08-25 20:01:33,668 INFO L226 Difference]: Without dead ends: 113 [2021-08-25 20:01:33,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:33,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-25 20:01:33,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-08-25 20:01:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 112 states have internal predecessors, (171), 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) [2021-08-25 20:01:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2021-08-25 20:01:33,754 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2021-08-25 20:01:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:33,754 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2021-08-25 20:01:33,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2021-08-25 20:01:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2021-08-25 20:01:33,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-25 20:01:33,756 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:33,756 INFO L512 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:33,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 20:01:33,756 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:33,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:33,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2021-08-25 20:01:33,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:01:33,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378349428] [2021-08-25 20:01:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:33,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:01:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:01:33,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:01:33,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378349428] [2021-08-25 20:01:33,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378349428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:33,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:33,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:01:33,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33931433] [2021-08-25 20:01:33,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:33,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:01:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:33,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:33,870 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2021-08-25 20:01:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:33,993 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2021-08-25 20:01:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:33,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-25 20:01:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:33,995 INFO L225 Difference]: With dead ends: 233 [2021-08-25 20:01:33,995 INFO L226 Difference]: Without dead ends: 131 [2021-08-25 20:01:33,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:33,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-25 20:01:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-08-25 20:01:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5039370078740157) internal successors, (191), 127 states have internal predecessors, (191), 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) [2021-08-25 20:01:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2021-08-25 20:01:34,007 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2021-08-25 20:01:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:34,007 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2021-08-25 20:01:34,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2021-08-25 20:01:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2021-08-25 20:01:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-25 20:01:34,009 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:34,009 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:34,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 20:01:34,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:34,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:34,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2021-08-25 20:01:34,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:01:34,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582138159] [2021-08-25 20:01:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:34,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:01:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:01:34,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:01:34,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582138159] [2021-08-25 20:01:34,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582138159] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:34,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:34,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:01:34,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372282268] [2021-08-25 20:01:34,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:34,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:01:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:34,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:34,100 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-08-25 20:01:34,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:34,131 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2021-08-25 20:01:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:34,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 51 [2021-08-25 20:01:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:34,133 INFO L225 Difference]: With dead ends: 271 [2021-08-25 20:01:34,133 INFO L226 Difference]: Without dead ends: 154 [2021-08-25 20:01:34,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-08-25 20:01:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-08-25 20:01:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 153 states have internal predecessors, (224), 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) [2021-08-25 20:01:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2021-08-25 20:01:34,143 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2021-08-25 20:01:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:34,144 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2021-08-25 20:01:34,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-08-25 20:01:34,144 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2021-08-25 20:01:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-25 20:01:34,145 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:34,146 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:34,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-25 20:01:34,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:34,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:34,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2021-08-25 20:01:34,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:01:34,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624027991] [2021-08-25 20:01:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:34,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:01:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:01:34,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:01:34,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624027991] [2021-08-25 20:01:34,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624027991] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:34,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:34,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:01:34,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854772029] [2021-08-25 20:01:34,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:34,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:01:34,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:34,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:34,198 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-08-25 20:01:34,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:34,319 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2021-08-25 20:01:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:34,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 51 [2021-08-25 20:01:34,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:34,322 INFO L225 Difference]: With dead ends: 292 [2021-08-25 20:01:34,323 INFO L226 Difference]: Without dead ends: 175 [2021-08-25 20:01:34,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:34,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-08-25 20:01:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-08-25 20:01:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4470588235294117) internal successors, (246), 170 states have internal predecessors, (246), 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) [2021-08-25 20:01:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2021-08-25 20:01:34,349 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2021-08-25 20:01:34,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:34,349 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2021-08-25 20:01:34,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-08-25 20:01:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2021-08-25 20:01:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-25 20:01:34,352 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:34,353 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:34,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-25 20:01:34,356 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2021-08-25 20:01:34,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:01:34,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139420727] [2021-08-25 20:01:34,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:34,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:01:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:01:34,422 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 20:01:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:01:34,511 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 20:01:34,512 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 20:01:34,512 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:01:34,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-25 20:01:34,519 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 20:01:34,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:01:34 BoogieIcfgContainer [2021-08-25 20:01:34,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 20:01:34,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 20:01:34,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 20:01:34,632 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 20:01:34,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:01:33" (3/4) ... [2021-08-25 20:01:34,636 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-25 20:01:34,636 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 20:01:34,638 INFO L168 Benchmark]: Toolchain (without parser) took 2722.02 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 42.2 MB in the beginning and 59.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:34,638 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 30.2 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 20:01:34,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.45 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 27.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:34,639 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.63 ms. Allocated memory is still 58.7 MB. Free memory was 27.2 MB in the beginning and 40.5 MB in the end (delta: -13.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:34,639 INFO L168 Benchmark]: Boogie Preprocessor took 59.61 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 38.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 20:01:34,640 INFO L168 Benchmark]: RCFGBuilder took 684.93 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.6 MB in the beginning and 51.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:34,640 INFO L168 Benchmark]: TraceAbstraction took 1506.65 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 50.6 MB in the beginning and 59.7 MB in the end (delta: -9.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:34,641 INFO L168 Benchmark]: Witness Printer took 3.89 ms. Allocated memory is still 86.0 MB. Free memory was 59.7 MB in the beginning and 59.0 MB in the end (delta: 633.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:34,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 30.2 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.45 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 27.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.63 ms. Allocated memory is still 58.7 MB. Free memory was 27.2 MB in the beginning and 40.5 MB in the end (delta: -13.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.61 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 38.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 684.93 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.6 MB in the beginning and 51.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1506.65 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 50.6 MB in the beginning and 59.7 MB in the end (delta: -9.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.89 ms. Allocated memory is still 86.0 MB. Free memory was 59.7 MB in the beginning and 59.0 MB in the end (delta: 633.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 616]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 303. Possible FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND TRUE \read(s__hit) [L96] ag_Y = 208 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND TRUE \read(s__hit) [L303] s__state = s__state | ag_Y [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L616] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1339.3ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 14.6ms, AutomataDifference: 539.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 714 SDtfs, 58 SDslu, 412 SDs, 0 SdLazy, 296 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 282.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=4, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 107.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.4ms SsaConstructionTime, 177.6ms SatisfiabilityAnalysisTime, 243.3ms InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 272 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 35/35 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 could not prove your program: unable to determine feasibility of some traces [2021-08-25 20:01:34,667 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 20:01:36,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 20:01:36,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 20:01:36,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 20:01:36,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 20:01:36,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 20:01:36,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 20:01:36,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 20:01:36,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 20:01:36,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 20:01:36,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 20:01:36,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 20:01:36,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 20:01:36,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 20:01:36,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 20:01:36,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 20:01:36,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 20:01:36,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 20:01:36,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 20:01:36,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 20:01:36,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 20:01:36,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 20:01:36,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 20:01:36,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 20:01:36,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 20:01:36,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 20:01:36,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 20:01:36,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 20:01:36,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 20:01:36,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 20:01:36,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 20:01:36,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 20:01:36,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 20:01:36,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 20:01:36,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 20:01:36,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 20:01:36,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 20:01:36,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 20:01:36,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 20:01:36,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 20:01:36,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 20:01:36,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-25 20:01:36,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 20:01:36,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 20:01:36,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 20:01:36,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 20:01:36,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 20:01:36,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 20:01:36,722 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 20:01:36,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 20:01:36,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 20:01:36,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 20:01:36,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 20:01:36,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 20:01:36,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 20:01:36,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 20:01:36,725 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-25 20:01:36,725 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-25 20:01:36,725 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 20:01:36,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 20:01:36,726 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 20:01:36,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 20:01:36,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 20:01:36,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 20:01:36,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 20:01:36,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:01:36,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 20:01:36,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 20:01:36,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 20:01:36,733 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-25 20:01:36,733 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-25 20:01:36,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 20:01:36,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 20:01:36,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-25 20:01:36,734 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 [2021-08-25 20:01:37,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 20:01:37,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 20:01:37,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 20:01:37,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 20:01:37,086 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 20:01:37,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-08-25 20:01:37,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc0fe041/7ff983fd2dc74af286edb4974e296e24/FLAGff8103713 [2021-08-25 20:01:37,673 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 20:01:37,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-08-25 20:01:37,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc0fe041/7ff983fd2dc74af286edb4974e296e24/FLAGff8103713 [2021-08-25 20:01:38,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc0fe041/7ff983fd2dc74af286edb4974e296e24 [2021-08-25 20:01:38,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 20:01:38,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 20:01:38,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 20:01:38,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 20:01:38,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 20:01:38,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572810b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38, skipping insertion in model container [2021-08-25 20:01:38,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 20:01:38,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 20:01:38,351 WARN L228 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/s3_clnt_3.BV.c.cil-2a.c[37452,37465] [2021-08-25 20:01:38,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:01:38,374 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 20:01:38,449 WARN L228 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/s3_clnt_3.BV.c.cil-2a.c[37452,37465] [2021-08-25 20:01:38,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:01:38,477 INFO L208 MainTranslator]: Completed translation [2021-08-25 20:01:38,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38 WrapperNode [2021-08-25 20:01:38,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 20:01:38,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 20:01:38,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 20:01:38,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 20:01:38,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 20:01:38,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 20:01:38,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 20:01:38,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 20:01:38,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 20:01:38,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 20:01:38,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 20:01:38,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 20:01:38,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (1/1) ... [2021-08-25 20:01:38,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:01:38,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:01:38,662 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) [2021-08-25 20:01:38,688 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 [2021-08-25 20:01:38,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-25 20:01:38,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 20:01:38,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 20:01:38,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 20:01:38,928 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-25 20:01:39,350 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-08-25 20:01:39,350 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-08-25 20:01:39,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 20:01:39,357 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-25 20:01:39,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:01:39 BoogieIcfgContainer [2021-08-25 20:01:39,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 20:01:39,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 20:01:39,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 20:01:39,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 20:01:39,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:01:38" (1/3) ... [2021-08-25 20:01:39,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e014bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:01:39, skipping insertion in model container [2021-08-25 20:01:39,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:01:38" (2/3) ... [2021-08-25 20:01:39,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e014bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:01:39, skipping insertion in model container [2021-08-25 20:01:39,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:01:39" (3/3) ... [2021-08-25 20:01:39,380 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2021-08-25 20:01:39,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 20:01:39,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 20:01:39,431 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 20:01:39,436 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-25 20:01:39,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 20:01:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 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) [2021-08-25 20:01:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-25 20:01:39,456 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:39,456 INFO L512 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] [2021-08-25 20:01:39,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:39,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:39,461 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2021-08-25 20:01:39,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:39,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192424704] [2021-08-25 20:01:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:39,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:39,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:39,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:39,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-25 20:01:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:39,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:01:39,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:01:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:01:39,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:01:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:01:39,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:01:39,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192424704] [2021-08-25 20:01:39,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192424704] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:39,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:39,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-25 20:01:39,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864434702] [2021-08-25 20:01:39,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:39,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:01:39,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:39,914 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 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 8.333333333333334) internal successors, (25), 3 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) [2021-08-25 20:01:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:40,096 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2021-08-25 20:01:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:40,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 [2021-08-25 20:01:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:40,110 INFO L225 Difference]: With dead ends: 247 [2021-08-25 20:01:40,110 INFO L226 Difference]: Without dead ends: 113 [2021-08-25 20:01:40,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:40,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-25 20:01:40,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-08-25 20:01:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 112 states have internal predecessors, (171), 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) [2021-08-25 20:01:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2021-08-25 20:01:40,163 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2021-08-25 20:01:40,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:40,164 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2021-08-25 20:01:40,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2021-08-25 20:01:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2021-08-25 20:01:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-25 20:01:40,167 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:40,167 INFO L512 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:40,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-25 20:01:40,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:40,379 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:40,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2021-08-25 20:01:40,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:40,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790343833] [2021-08-25 20:01:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:40,388 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:40,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:40,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:40,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-25 20:01:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:40,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:01:40,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:01:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:01:40,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:01:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:01:40,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:01:40,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790343833] [2021-08-25 20:01:40,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790343833] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:40,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:40,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-25 20:01:40,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690739185] [2021-08-25 20:01:40,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:40,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:01:40,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:40,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:40,901 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2021-08-25 20:01:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:41,092 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2021-08-25 20:01:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:41,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-25 20:01:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:41,097 INFO L225 Difference]: With dead ends: 233 [2021-08-25 20:01:41,097 INFO L226 Difference]: Without dead ends: 131 [2021-08-25 20:01:41,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:41,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-25 20:01:41,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-08-25 20:01:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5039370078740157) internal successors, (191), 127 states have internal predecessors, (191), 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) [2021-08-25 20:01:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2021-08-25 20:01:41,116 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2021-08-25 20:01:41,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:41,119 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2021-08-25 20:01:41,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2021-08-25 20:01:41,132 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2021-08-25 20:01:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-25 20:01:41,136 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:41,136 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:41,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-25 20:01:41,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:41,347 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:41,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:41,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2021-08-25 20:01:41,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:41,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034464021] [2021-08-25 20:01:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:41,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:41,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:41,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:41,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-25 20:01:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:41,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:01:41,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:01:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:01:41,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:01:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:01:42,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:01:42,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034464021] [2021-08-25 20:01:42,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034464021] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:42,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:42,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-25 20:01:42,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390972982] [2021-08-25 20:01:42,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:42,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:01:42,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:42,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:42,112 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-08-25 20:01:42,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:42,146 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2021-08-25 20:01:42,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:42,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 51 [2021-08-25 20:01:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:42,148 INFO L225 Difference]: With dead ends: 271 [2021-08-25 20:01:42,148 INFO L226 Difference]: Without dead ends: 154 [2021-08-25 20:01:42,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:42,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-08-25 20:01:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-08-25 20:01:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 153 states have internal predecessors, (224), 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) [2021-08-25 20:01:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2021-08-25 20:01:42,169 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2021-08-25 20:01:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:42,170 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2021-08-25 20:01:42,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-08-25 20:01:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2021-08-25 20:01:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-25 20:01:42,188 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:42,189 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:42,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-25 20:01:42,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:42,399 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:42,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2021-08-25 20:01:42,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:42,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860185268] [2021-08-25 20:01:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:42,400 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:42,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:42,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:42,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-25 20:01:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:42,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:01:42,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:01:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:01:42,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:01:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:01:43,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:01:43,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860185268] [2021-08-25 20:01:43,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860185268] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:43,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:43,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-25 20:01:43,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810284102] [2021-08-25 20:01:43,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:43,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:01:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:43,101 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-08-25 20:01:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:43,226 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2021-08-25 20:01:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 51 [2021-08-25 20:01:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:43,229 INFO L225 Difference]: With dead ends: 292 [2021-08-25 20:01:43,229 INFO L226 Difference]: Without dead ends: 175 [2021-08-25 20:01:43,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-08-25 20:01:43,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-08-25 20:01:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4470588235294117) internal successors, (246), 170 states have internal predecessors, (246), 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) [2021-08-25 20:01:43,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2021-08-25 20:01:43,240 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2021-08-25 20:01:43,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:43,241 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2021-08-25 20:01:43,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-08-25 20:01:43,241 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2021-08-25 20:01:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-25 20:01:43,244 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:43,244 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:43,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-25 20:01:43,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:43,454 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:43,454 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2021-08-25 20:01:43,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:43,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103009637] [2021-08-25 20:01:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:43,455 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:43,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:43,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:43,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-25 20:01:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:43,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-25 20:01:43,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:01:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-25 20:01:44,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:01:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-25 20:01:44,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:01:44,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103009637] [2021-08-25 20:01:44,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103009637] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-25 20:01:44,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 20:01:44,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-08-25 20:01:44,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16835529] [2021-08-25 20:01:44,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-25 20:01:44,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:01:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-25 20:01:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-25 20:01:44,375 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2021-08-25 20:01:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:44,897 INFO L93 Difference]: Finished difference Result 566 states and 848 transitions. [2021-08-25 20:01:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-25 20:01:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 68 [2021-08-25 20:01:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:44,900 INFO L225 Difference]: With dead ends: 566 [2021-08-25 20:01:44,900 INFO L226 Difference]: Without dead ends: 431 [2021-08-25 20:01:44,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-25 20:01:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-08-25 20:01:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2021-08-25 20:01:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.4521531100478469) internal successors, (607), 418 states have internal predecessors, (607), 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) [2021-08-25 20:01:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 607 transitions. [2021-08-25 20:01:44,922 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 607 transitions. Word has length 68 [2021-08-25 20:01:44,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:44,922 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 607 transitions. [2021-08-25 20:01:44,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2021-08-25 20:01:44,923 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 607 transitions. [2021-08-25 20:01:44,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-25 20:01:44,924 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:44,924 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:44,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-25 20:01:45,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:45,134 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:45,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:45,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2031900493, now seen corresponding path program 1 times [2021-08-25 20:01:45,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:45,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274603103] [2021-08-25 20:01:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:45,135 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:45,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:45,139 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:45,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-25 20:01:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:45,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:01:45,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:01:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-25 20:01:45,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:01:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-25 20:01:45,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:01:45,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274603103] [2021-08-25 20:01:45,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274603103] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:45,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:45,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-25 20:01:45,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768721021] [2021-08-25 20:01:45,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:45,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:01:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:45,796 INFO L87 Difference]: Start difference. First operand 419 states and 607 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2021-08-25 20:01:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:45,824 INFO L93 Difference]: Finished difference Result 927 states and 1364 transitions. [2021-08-25 20:01:45,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:45,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 68 [2021-08-25 20:01:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:45,827 INFO L225 Difference]: With dead ends: 927 [2021-08-25 20:01:45,827 INFO L226 Difference]: Without dead ends: 574 [2021-08-25 20:01:45,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-08-25 20:01:45,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2021-08-25 20:01:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.4623467600700526) internal successors, (835), 571 states have internal predecessors, (835), 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) [2021-08-25 20:01:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 835 transitions. [2021-08-25 20:01:45,854 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 835 transitions. Word has length 68 [2021-08-25 20:01:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:45,855 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 835 transitions. [2021-08-25 20:01:45,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2021-08-25 20:01:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 835 transitions. [2021-08-25 20:01:45,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-25 20:01:45,856 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:45,856 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:45,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-25 20:01:46,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:46,072 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:46,073 INFO L82 PathProgramCache]: Analyzing trace with hash -875025075, now seen corresponding path program 1 times [2021-08-25 20:01:46,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:46,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516324435] [2021-08-25 20:01:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:46,073 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:46,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:46,074 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:46,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-25 20:01:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:46,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:01:46,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:01:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-25 20:01:46,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:01:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-25 20:01:46,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:01:46,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516324435] [2021-08-25 20:01:46,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516324435] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:46,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:46,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-25 20:01:46,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898130376] [2021-08-25 20:01:46,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:46,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:01:46,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:46,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:46,798 INFO L87 Difference]: Start difference. First operand 572 states and 835 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2021-08-25 20:01:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:46,827 INFO L93 Difference]: Finished difference Result 576 states and 837 transitions. [2021-08-25 20:01:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:46,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 68 [2021-08-25 20:01:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:46,830 INFO L225 Difference]: With dead ends: 576 [2021-08-25 20:01:46,830 INFO L226 Difference]: Without dead ends: 419 [2021-08-25 20:01:46,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:46,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-08-25 20:01:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2021-08-25 20:01:46,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.4375) internal successors, (598), 416 states have internal predecessors, (598), 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) [2021-08-25 20:01:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 598 transitions. [2021-08-25 20:01:46,850 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 598 transitions. Word has length 68 [2021-08-25 20:01:46,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:46,851 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 598 transitions. [2021-08-25 20:01:46,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2021-08-25 20:01:46,851 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 598 transitions. [2021-08-25 20:01:46,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-25 20:01:46,852 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:46,852 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:46,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-08-25 20:01:47,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:47,061 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:47,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:47,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1614503887, now seen corresponding path program 1 times [2021-08-25 20:01:47,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:47,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925054939] [2021-08-25 20:01:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:47,062 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:47,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:47,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:47,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-25 20:01:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:47,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-25 20:01:47,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:01:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:01:47,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:01:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:01:48,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:01:48,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925054939] [2021-08-25 20:01:48,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925054939] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-25 20:01:48,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 20:01:48,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-08-25 20:01:48,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022154256] [2021-08-25 20:01:48,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-25 20:01:48,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:01:48,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-25 20:01:48,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-25 20:01:48,223 INFO L87 Difference]: Start difference. First operand 417 states and 598 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 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) [2021-08-25 20:01:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:49,502 INFO L93 Difference]: Finished difference Result 855 states and 1264 transitions. [2021-08-25 20:01:49,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-25 20:01:49,503 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 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 68 [2021-08-25 20:01:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:49,508 INFO L225 Difference]: With dead ends: 855 [2021-08-25 20:01:49,508 INFO L226 Difference]: Without dead ends: 699 [2021-08-25 20:01:49,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 212.6ms TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2021-08-25 20:01:49,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-08-25 20:01:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 476. [2021-08-25 20:01:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.4042105263157896) internal successors, (667), 475 states have internal predecessors, (667), 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) [2021-08-25 20:01:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 667 transitions. [2021-08-25 20:01:49,540 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 667 transitions. Word has length 68 [2021-08-25 20:01:49,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:49,541 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 667 transitions. [2021-08-25 20:01:49,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 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) [2021-08-25 20:01:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 667 transitions. [2021-08-25 20:01:49,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-08-25 20:01:49,542 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:49,542 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:49,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-25 20:01:49,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:49,754 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:49,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:49,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1844660206, now seen corresponding path program 1 times [2021-08-25 20:01:49,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:49,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041069573] [2021-08-25 20:01:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:49,755 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:49,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:49,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:49,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-25 20:01:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:50,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:01:50,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:01:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-08-25 20:01:51,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:01:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-08-25 20:01:51,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:01:51,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041069573] [2021-08-25 20:01:51,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041069573] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:51,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:51,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-25 20:01:51,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218527241] [2021-08-25 20:01:51,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:01:51,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:01:51,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:01:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:51,327 INFO L87 Difference]: Start difference. First operand 476 states and 667 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-08-25 20:01:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:51,569 INFO L93 Difference]: Finished difference Result 934 states and 1333 transitions. [2021-08-25 20:01:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:01:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 85 [2021-08-25 20:01:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:51,573 INFO L225 Difference]: With dead ends: 934 [2021-08-25 20:01:51,573 INFO L226 Difference]: Without dead ends: 524 [2021-08-25 20:01:51,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:01:51,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-08-25 20:01:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 518. [2021-08-25 20:01:51,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.390715667311412) internal successors, (719), 517 states have internal predecessors, (719), 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) [2021-08-25 20:01:51,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 719 transitions. [2021-08-25 20:01:51,600 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 719 transitions. Word has length 85 [2021-08-25 20:01:51,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:51,600 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 719 transitions. [2021-08-25 20:01:51,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-08-25 20:01:51,601 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 719 transitions. [2021-08-25 20:01:51,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-08-25 20:01:51,604 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:51,604 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:51,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-25 20:01:51,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:51,815 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:51,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:51,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2022672797, now seen corresponding path program 1 times [2021-08-25 20:01:51,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:51,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518424017] [2021-08-25 20:01:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:51,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:51,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:51,818 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:51,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-25 20:01:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:01:52,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:01:52,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:01:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-08-25 20:01:52,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:01:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-08-25 20:01:53,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:01:53,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518424017] [2021-08-25 20:01:53,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518424017] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:01:53,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:01:53,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-25 20:01:53,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483139129] [2021-08-25 20:01:53,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 20:01:53,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:01:53,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 20:01:53,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:01:53,258 INFO L87 Difference]: Start difference. First operand 518 states and 719 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-08-25 20:01:53,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:01:53,314 INFO L93 Difference]: Finished difference Result 1468 states and 2045 transitions. [2021-08-25 20:01:53,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 20:01:53,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 104 [2021-08-25 20:01:53,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:01:53,320 INFO L225 Difference]: With dead ends: 1468 [2021-08-25 20:01:53,320 INFO L226 Difference]: Without dead ends: 1016 [2021-08-25 20:01:53,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:01:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-08-25 20:01:53,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1012. [2021-08-25 20:01:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1011 states have (on average 1.3788328387734916) internal successors, (1394), 1011 states have internal predecessors, (1394), 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) [2021-08-25 20:01:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1394 transitions. [2021-08-25 20:01:53,353 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1394 transitions. Word has length 104 [2021-08-25 20:01:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:01:53,353 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 1394 transitions. [2021-08-25 20:01:53,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-08-25 20:01:53,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1394 transitions. [2021-08-25 20:01:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-08-25 20:01:53,355 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:01:53,355 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:01:53,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-25 20:01:53,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:53,566 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:01:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:01:53,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1888659291, now seen corresponding path program 1 times [2021-08-25 20:01:53,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:01:53,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240237984] [2021-08-25 20:01:53,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:01:53,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:01:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:01:53,579 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:01:53,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-25 20:01:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:01:54,215 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 20:01:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:01:54,542 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-25 20:01:54,542 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 20:01:54,543 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:01:54,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-08-25 20:01:54,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:01:54,760 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 20:01:54,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:01:54 BoogieIcfgContainer [2021-08-25 20:01:54,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 20:01:54,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 20:01:54,887 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 20:01:54,888 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 20:01:54,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:01:39" (3/4) ... [2021-08-25 20:01:54,890 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 20:01:55,029 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 20:01:55,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 20:01:55,032 INFO L168 Benchmark]: Toolchain (without parser) took 17000.17 ms. Allocated memory was 54.5 MB in the beginning and 211.8 MB in the end (delta: 157.3 MB). Free memory was 31.3 MB in the beginning and 151.7 MB in the end (delta: -120.5 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:55,032 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 20:01:55,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.80 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.0 MB in the beginning and 47.9 MB in the end (delta: -16.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:55,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.69 ms. Allocated memory is still 67.1 MB. Free memory was 47.7 MB in the beginning and 45.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:55,033 INFO L168 Benchmark]: Boogie Preprocessor took 73.39 ms. Allocated memory is still 67.1 MB. Free memory was 45.4 MB in the beginning and 43.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:55,033 INFO L168 Benchmark]: RCFGBuilder took 722.77 ms. Allocated memory is still 67.1 MB. Free memory was 43.2 MB in the beginning and 31.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:55,033 INFO L168 Benchmark]: TraceAbstraction took 15526.48 ms. Allocated memory was 67.1 MB in the beginning and 211.8 MB in the end (delta: 144.7 MB). Free memory was 30.4 MB in the beginning and 164.3 MB in the end (delta: -133.9 MB). Peak memory consumption was 112.2 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:55,034 INFO L168 Benchmark]: Witness Printer took 143.35 ms. Allocated memory is still 211.8 MB. Free memory was 164.3 MB in the beginning and 151.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-25 20:01:55,036 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 429.80 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.0 MB in the beginning and 47.9 MB in the end (delta: -16.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.69 ms. Allocated memory is still 67.1 MB. Free memory was 47.7 MB in the beginning and 45.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.39 ms. Allocated memory is still 67.1 MB. Free memory was 45.4 MB in the beginning and 43.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 722.77 ms. Allocated memory is still 67.1 MB. Free memory was 43.2 MB in the beginning and 31.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15526.48 ms. Allocated memory was 67.1 MB in the beginning and 211.8 MB in the end (delta: 144.7 MB). Free memory was 30.4 MB in the beginning and 164.3 MB in the end (delta: -133.9 MB). Peak memory consumption was 112.2 MB. Max. memory is 16.1 GB. * Witness Printer took 143.35 ms. Allocated memory is still 211.8 MB. Free memory was 164.3 MB in the beginning and 151.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 616]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(\read(s__hit)) [L98] ag_Z = 48 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND FALSE !(\read(s__hit)) [L305] s__state = s__state | ag_Z [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND TRUE s__state == 4400 [L311] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L312] skip = 1 [L326] s__state = 4416 [L327] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND TRUE s__state == 4416 [L331] ret = __VERIFIER_nondet_int() [L332] COND FALSE !(blastFlag == 3) [L337] COND FALSE !(ret <= 0) [L342] s__state = 4432 [L343] s__init_num = 0 [L344] COND FALSE !(! tmp___6) [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L616] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15330.1ms, OverallIterations: 11, TraceHistogramMax: 6, EmptinessCheckTime: 42.9ms, AutomataDifference: 2785.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1871 SDtfs, 1875 SDslu, 2477 SDs, 0 SdLazy, 1673 SolverSat, 238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1631.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1240 GetRequests, 1208 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 299.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=10, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 231.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 256 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 294.9ms SsaConstructionTime, 483.9ms SatisfiabilityAnalysisTime, 6045.0ms InterpolantComputationTime, 729 NumberOfCodeBlocks, 729 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1230 ConstructedInterpolants, 59 QuantifiedInterpolants, 3034 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1273 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 727/828 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! [2021-08-25 20:01:55,072 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...