./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ssh-simplified/s3_srvr_10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ssh-simplified/s3_srvr_10.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 221038eb3d852e675138331615da45f0057866c6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-25 08:50:22,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:50:22,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:50:22,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:50:22,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:50:22,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:50:22,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:50:22,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:50:22,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:50:22,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:50:22,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:50:22,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:50:22,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:50:22,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:50:22,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:50:22,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:50:22,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:50:22,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:50:22,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:50:22,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:50:22,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:50:22,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:50:22,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:50:22,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:50:22,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:50:22,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:50:22,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:50:22,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:50:22,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:50:22,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:50:22,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:50:22,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:50:22,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:50:22,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:50:22,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:50:22,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:50:22,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:50:22,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:50:22,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:50:22,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:50:22,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:50:22,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:50:22,556 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:50:22,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:50:22,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:50:22,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:50:22,558 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:50:22,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:50:22,558 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:50:22,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:50:22,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:50:22,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:50:22,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:50:22,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:50:22,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:50:22,560 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:50:22,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:50:22,560 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:50:22,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:50:22,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:50:22,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:50:22,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:50:22,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:50:22,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:50:22,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:50:22,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:50:22,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:50:22,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:50:22,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:50:22,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:50:22,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer 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(__VERIFIER_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 -> 221038eb3d852e675138331615da45f0057866c6 [2019-11-25 08:50:22,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:50:22,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:50:22,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:50:22,724 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:50:22,724 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:50:22,725 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/../../sv-benchmarks/c/ssh-simplified/s3_srvr_10.cil.c [2019-11-25 08:50:22,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/data/1f786a7ae/1c9a326de5fa4650b69db5d41271f46e/FLAG3c8f567bd [2019-11-25 08:50:23,193 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:50:23,200 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/sv-benchmarks/c/ssh-simplified/s3_srvr_10.cil.c [2019-11-25 08:50:23,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/data/1f786a7ae/1c9a326de5fa4650b69db5d41271f46e/FLAG3c8f567bd [2019-11-25 08:50:23,513 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/data/1f786a7ae/1c9a326de5fa4650b69db5d41271f46e [2019-11-25 08:50:23,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:50:23,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:50:23,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:23,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:50:23,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:50:23,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:23,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c824ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23, skipping insertion in model container [2019-11-25 08:50:23,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:23,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:50:23,584 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:50:23,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:23,863 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:50:23,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:23,951 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:50:23,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23 WrapperNode [2019-11-25 08:50:23,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:23,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:23,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:50:23,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:50:23,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:23,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:24,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:24,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:50:24,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:50:24,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:50:24,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:24,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:24,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:24,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:24,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:24,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:24,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (1/1) ... [2019-11-25 08:50:24,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:50:24,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:50:24,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:50:24,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:50:24,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:50:24,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:50:24,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:50:24,311 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-25 08:50:24,984 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-11-25 08:50:24,985 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-11-25 08:50:24,986 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:50:24,986 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:50:24,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:24 BoogieIcfgContainer [2019-11-25 08:50:24,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:50:24,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:50:24,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:50:24,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:50:24,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:50:23" (1/3) ... [2019-11-25 08:50:24,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6c5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:50:24, skipping insertion in model container [2019-11-25 08:50:24,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:23" (2/3) ... [2019-11-25 08:50:24,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6c5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:50:24, skipping insertion in model container [2019-11-25 08:50:24,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:24" (3/3) ... [2019-11-25 08:50:24,994 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_10.cil.c [2019-11-25 08:50:25,006 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:50:25,014 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:50:25,023 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:50:25,044 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:50:25,044 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:50:25,044 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:50:25,045 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:50:25,045 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:50:25,045 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:50:25,045 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:50:25,045 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:50:25,063 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2019-11-25 08:50:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:50:25,070 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:25,070 INFO L410 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] [2019-11-25 08:50:25,071 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2084821380, now seen corresponding path program 1 times [2019-11-25 08:50:25,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749904361] [2019-11-25 08:50:25,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:25,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749904361] [2019-11-25 08:50:25,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:25,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:50:25,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714336445] [2019-11-25 08:50:25,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:50:25,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:25,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:50:25,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:25,288 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 3 states. [2019-11-25 08:50:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:25,529 INFO L93 Difference]: Finished difference Result 311 states and 529 transitions. [2019-11-25 08:50:25,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:50:25,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-11-25 08:50:25,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:25,544 INFO L225 Difference]: With dead ends: 311 [2019-11-25 08:50:25,544 INFO L226 Difference]: Without dead ends: 152 [2019-11-25 08:50:25,548 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-25 08:50:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2019-11-25 08:50:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-25 08:50:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 235 transitions. [2019-11-25 08:50:25,607 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 235 transitions. Word has length 22 [2019-11-25 08:50:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:25,608 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 235 transitions. [2019-11-25 08:50:25,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:50:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 235 transitions. [2019-11-25 08:50:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:50:25,612 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:25,613 INFO L410 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] [2019-11-25 08:50:25,613 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:25,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,614 INFO L82 PathProgramCache]: Analyzing trace with hash -586952456, now seen corresponding path program 1 times [2019-11-25 08:50:25,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608181033] [2019-11-25 08:50:25,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:25,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608181033] [2019-11-25 08:50:25,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:25,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:50:25,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315515007] [2019-11-25 08:50:25,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:50:25,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:25,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:50:25,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:25,713 INFO L87 Difference]: Start difference. First operand 150 states and 235 transitions. Second operand 3 states. [2019-11-25 08:50:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:25,904 INFO L93 Difference]: Finished difference Result 313 states and 493 transitions. [2019-11-25 08:50:25,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:50:25,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-25 08:50:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:25,906 INFO L225 Difference]: With dead ends: 313 [2019-11-25 08:50:25,907 INFO L226 Difference]: Without dead ends: 170 [2019-11-25 08:50:25,908 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-25 08:50:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2019-11-25 08:50:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2019-11-25 08:50:25,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 266 transitions. [2019-11-25 08:50:25,929 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 266 transitions. Word has length 23 [2019-11-25 08:50:25,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:25,930 INFO L462 AbstractCegarLoop]: Abstraction has 168 states and 266 transitions. [2019-11-25 08:50:25,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:50:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 266 transitions. [2019-11-25 08:50:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:50:25,932 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:25,933 INFO L410 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] [2019-11-25 08:50:25,933 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:25,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,934 INFO L82 PathProgramCache]: Analyzing trace with hash 69813308, now seen corresponding path program 1 times [2019-11-25 08:50:25,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535006444] [2019-11-25 08:50:25,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:26,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535006444] [2019-11-25 08:50:26,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:26,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:50:26,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112888520] [2019-11-25 08:50:26,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:50:26,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:26,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:50:26,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:26,023 INFO L87 Difference]: Start difference. First operand 168 states and 266 transitions. Second operand 3 states. [2019-11-25 08:50:26,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:26,201 INFO L93 Difference]: Finished difference Result 330 states and 523 transitions. [2019-11-25 08:50:26,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:50:26,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-25 08:50:26,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:26,205 INFO L225 Difference]: With dead ends: 330 [2019-11-25 08:50:26,206 INFO L226 Difference]: Without dead ends: 169 [2019-11-25 08:50:26,207 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-11-25 08:50:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2019-11-25 08:50:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2019-11-25 08:50:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 267 transitions. [2019-11-25 08:50:26,230 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 267 transitions. Word has length 23 [2019-11-25 08:50:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:26,239 INFO L462 AbstractCegarLoop]: Abstraction has 169 states and 267 transitions. [2019-11-25 08:50:26,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:50:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 267 transitions. [2019-11-25 08:50:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-25 08:50:26,241 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:26,241 INFO L410 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] [2019-11-25 08:50:26,241 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:26,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash 173828051, now seen corresponding path program 1 times [2019-11-25 08:50:26,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:26,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753752206] [2019-11-25 08:50:26,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:26,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753752206] [2019-11-25 08:50:26,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:26,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:50:26,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894188165] [2019-11-25 08:50:26,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:50:26,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:26,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:50:26,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:26,310 INFO L87 Difference]: Start difference. First operand 169 states and 267 transitions. Second operand 3 states. [2019-11-25 08:50:26,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:26,483 INFO L93 Difference]: Finished difference Result 340 states and 535 transitions. [2019-11-25 08:50:26,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:50:26,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-25 08:50:26,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:26,487 INFO L225 Difference]: With dead ends: 340 [2019-11-25 08:50:26,487 INFO L226 Difference]: Without dead ends: 178 [2019-11-25 08:50:26,489 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-11-25 08:50:26,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2019-11-25 08:50:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-11-25 08:50:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 276 transitions. [2019-11-25 08:50:26,515 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 276 transitions. Word has length 24 [2019-11-25 08:50:26,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:26,516 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 276 transitions. [2019-11-25 08:50:26,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:50:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 276 transitions. [2019-11-25 08:50:26,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:50:26,517 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:26,518 INFO L410 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] [2019-11-25 08:50:26,518 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:26,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,519 INFO L82 PathProgramCache]: Analyzing trace with hash 57533382, now seen corresponding path program 1 times [2019-11-25 08:50:26,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:26,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28008441] [2019-11-25 08:50:26,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:26,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28008441] [2019-11-25 08:50:26,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:26,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:50:26,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750367534] [2019-11-25 08:50:26,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:50:26,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:26,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:50:26,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:26,556 INFO L87 Difference]: Start difference. First operand 178 states and 276 transitions. Second operand 3 states. [2019-11-25 08:50:26,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:26,723 INFO L93 Difference]: Finished difference Result 359 states and 553 transitions. [2019-11-25 08:50:26,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:50:26,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-25 08:50:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:26,725 INFO L225 Difference]: With dead ends: 359 [2019-11-25 08:50:26,726 INFO L226 Difference]: Without dead ends: 188 [2019-11-25 08:50:26,726 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-11-25 08:50:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2019-11-25 08:50:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-11-25 08:50:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 274 transitions. [2019-11-25 08:50:26,749 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 274 transitions. Word has length 25 [2019-11-25 08:50:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:26,750 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 274 transitions. [2019-11-25 08:50:26,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:50:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 274 transitions. [2019-11-25 08:50:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:50:26,751 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:26,751 INFO L410 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, 1] [2019-11-25 08:50:26,752 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1413165422, now seen corresponding path program 1 times [2019-11-25 08:50:26,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:26,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143088813] [2019-11-25 08:50:26,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:26,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143088813] [2019-11-25 08:50:26,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:26,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:50:26,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535321943] [2019-11-25 08:50:26,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:50:26,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:50:26,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:26,809 INFO L87 Difference]: Start difference. First operand 178 states and 274 transitions. Second operand 3 states. [2019-11-25 08:50:26,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:26,980 INFO L93 Difference]: Finished difference Result 359 states and 549 transitions. [2019-11-25 08:50:26,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:50:26,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-25 08:50:26,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:26,982 INFO L225 Difference]: With dead ends: 359 [2019-11-25 08:50:26,982 INFO L226 Difference]: Without dead ends: 188 [2019-11-25 08:50:26,983 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-11-25 08:50:26,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2019-11-25 08:50:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-11-25 08:50:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 272 transitions. [2019-11-25 08:50:26,993 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 272 transitions. Word has length 26 [2019-11-25 08:50:26,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:26,994 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 272 transitions. [2019-11-25 08:50:26,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:50:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 272 transitions. [2019-11-25 08:50:26,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:50:26,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:27,003 INFO L410 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, 1] [2019-11-25 08:50:27,003 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:27,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:27,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1880242814, now seen corresponding path program 1 times [2019-11-25 08:50:27,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:27,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595461957] [2019-11-25 08:50:27,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:27,077 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:27,077 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:50:27,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:50:27 BoogieIcfgContainer [2019-11-25 08:50:27,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:50:27,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:50:27,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:50:27,145 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:50:27,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:24" (3/4) ... [2019-11-25 08:50:27,147 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:50:27,222 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_265248fa-fca0-489c-8614-3015f56f80f6/bin/uautomizer/witness.graphml [2019-11-25 08:50:27,222 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:50:27,224 INFO L168 Benchmark]: Toolchain (without parser) took 3706.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 944.7 MB in the beginning and 907.2 MB in the end (delta: 37.6 MB). Peak memory consumption was 230.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:27,224 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:27,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -238.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:27,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:27,226 INFO L168 Benchmark]: Boogie Preprocessor took 39.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:27,226 INFO L168 Benchmark]: RCFGBuilder took 939.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:27,227 INFO L168 Benchmark]: TraceAbstraction took 2155.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.2 MB in the end (delta: 210.6 MB). Peak memory consumption was 210.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:27,227 INFO L168 Benchmark]: Witness Printer took 77.94 ms. Allocated memory is still 1.2 GB. Free memory is still 907.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:27,229 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 434.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -238.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 939.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2155.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.2 MB in the end (delta: 210.6 MB). Peak memory consumption was 210.6 MB. Max. memory is 11.5 GB. * Witness Printer took 77.94 ms. Allocated memory is still 1.2 GB. Free memory is still 907.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 628]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L634] int s ; [L635] int tmp ; [L639] s = 8464 [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf = __VERIFIER_nondet_int() ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp = __VERIFIER_nondet_long() ; [L45] int cb ; [L46] long num1 ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 ; [L55] int tmp___4 ; [L56] int tmp___5 ; [L57] int tmp___6 ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 ; [L61] int tmp___10 ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__s3__tmp__new_cipher__algorithms = 0 [L73] __cil_tmp56 = 0 [L74] __cil_tmp57 = 0 [L75] __cil_tmp58 = 0 [L76] __cil_tmp59 = 0 [L77] __cil_tmp60 = 0 [L78] __cil_tmp61 = 0 [L79] s__s3__tmp__reuse_message = 0 [L80] s__state = initial_state [L81] blastFlag = 0 [L82] Time = tmp [L83] cb = 0 [L84] ret = -1 [L85] skip = 0 [L86] got_new_session = 0 [L87] COND TRUE s__info_callback != 0 [L88] cb = s__info_callback [L94] s__in_handshake ++ [L95] COND FALSE !(tmp___1 + 12288) [L100] COND FALSE !(s__cert == 0) [L104] COND TRUE 1 [L106] state = s__state [L107] COND FALSE !(s__state == 12292) [L110] COND FALSE !(s__state == 16384) [L113] COND FALSE !(s__state == 8192) [L116] COND FALSE !(s__state == 24576) [L119] COND FALSE !(s__state == 8195) [L122] COND FALSE !(s__state == 8480) [L125] COND FALSE !(s__state == 8481) [L128] COND FALSE !(s__state == 8482) [L131] COND TRUE s__state == 8464 [L275] s__shutdown = 0 [L276] ret = __VERIFIER_nondet_int() [L277] COND TRUE blastFlag == 0 [L278] blastFlag = 1 [L280] COND FALSE !(ret <= 0) [L283] got_new_session = 1 [L284] s__state = 8496 [L285] s__init_num = 0 [L591] COND TRUE ! s__s3__tmp__reuse_message [L592] COND TRUE ! skip [L593] COND TRUE state == 8464 [L594] COND TRUE s__state == 8496 [L595] COND TRUE cb != 0 [L596] COND TRUE s__info_callback != 0 [L628] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 146 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 840 SDtfs, 1058 SDslu, 120 SDs, 0 SdLazy, 496 SolverSat, 176 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 7411 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...