/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_10.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:07:29,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:07:29,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:07:29,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:07:29,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:07:29,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:07:29,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:07:29,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:07:29,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:07:29,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:07:29,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:07:29,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:07:29,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:07:29,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:07:29,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:07:29,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:07:29,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:07:29,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:07:29,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:07:29,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:07:29,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:07:29,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:07:29,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:07:29,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:07:29,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:07:29,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:07:29,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:07:29,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:07:29,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:07:29,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 14:07:29,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:07:29,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:07:29,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:07:29,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 14:07:29,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:07:29,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:07:29,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:07:29,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:07:29,405 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:07:29,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:07:29,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:07:29,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:07:29,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:07:29,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:07:29,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:07:29,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:07:29,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:07:29,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:07:29,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:07:29,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:07:29,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:07:29,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:07:29,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:07:29,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:07:29,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:07:29,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:07:29,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:07:29,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:07:29,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:07:29,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:07:29,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:07:29,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:07:29,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:07:29,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> log-additional-information=true; [2020-08-21 14:07:29,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:07:29,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:07:29,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:07:29,736 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:07:29,737 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:07:29,738 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_10.cil.c [2020-08-21 14:07:29,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0e13523/4ea776f14a044c979b7e6309775f2616/FLAG02c4b1551 [2020-08-21 14:07:30,307 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:07:30,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_10.cil.c [2020-08-21 14:07:30,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0e13523/4ea776f14a044c979b7e6309775f2616/FLAG02c4b1551 [2020-08-21 14:07:30,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0e13523/4ea776f14a044c979b7e6309775f2616 [2020-08-21 14:07:30,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:07:30,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:07:30,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:07:30,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:07:30,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:07:30,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:07:30" (1/1) ... [2020-08-21 14:07:30,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d78f5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:30, skipping insertion in model container [2020-08-21 14:07:30,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:07:30" (1/1) ... [2020-08-21 14:07:30,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:07:30,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:07:31,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:07:31,051 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:07:31,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:07:31,281 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:07:31,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:31 WrapperNode [2020-08-21 14:07:31,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:07:31,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:07:31,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:07:31,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:07:31,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:31" (1/1) ... [2020-08-21 14:07:31,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:31" (1/1) ... [2020-08-21 14:07:31,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:31" (1/1) ... [2020-08-21 14:07:31,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:31" (1/1) ... [2020-08-21 14:07:31,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:31" (1/1) ... [2020-08-21 14:07:31,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:31" (1/1) ... [2020-08-21 14:07:31,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:31" (1/1) ... [2020-08-21 14:07:31,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:07:31,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:07:31,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:07:31,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:07:31,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-08-21 14:07:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:07:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:07:31,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-21 14:07:31,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:07:31,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:07:31,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 14:07:31,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:07:31,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-21 14:07:31,405 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-21 14:07:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:07:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:07:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:07:31,678 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-21 14:07:32,153 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-21 14:07:32,153 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-21 14:07:32,165 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:07:32,166 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 14:07:32,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:07:32 BoogieIcfgContainer [2020-08-21 14:07:32,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:07:32,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:07:32,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:07:32,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:07:32,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:07:30" (1/3) ... [2020-08-21 14:07:32,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c56a5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:07:32, skipping insertion in model container [2020-08-21 14:07:32,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:07:31" (2/3) ... [2020-08-21 14:07:32,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c56a5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:07:32, skipping insertion in model container [2020-08-21 14:07:32,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:07:32" (3/3) ... [2020-08-21 14:07:32,181 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_10.cil.c [2020-08-21 14:07:32,192 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:07:32,201 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:07:32,215 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:07:32,241 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:07:32,241 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:07:32,241 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:07:32,241 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:07:32,242 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:07:32,242 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:07:32,242 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:07:32,242 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:07:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-21 14:07:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 14:07:32,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:07:32,274 INFO L422 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, 1, 1] [2020-08-21 14:07:32,274 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:07:32,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:07:32,281 INFO L82 PathProgramCache]: Analyzing trace with hash 2014227619, now seen corresponding path program 1 times [2020-08-21 14:07:32,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:07:32,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859521428] [2020-08-21 14:07:32,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:07:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:07:32,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:07:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:07:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:07:32,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859521428] [2020-08-21 14:07:32,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:07:32,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 14:07:32,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541068400] [2020-08-21 14:07:32,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 14:07:32,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:07:32,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 14:07:32,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:07:32,577 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 5 states. [2020-08-21 14:07:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:07:33,041 INFO L93 Difference]: Finished difference Result 363 states and 619 transitions. [2020-08-21 14:07:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:07:33,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-21 14:07:33,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:07:33,059 INFO L225 Difference]: With dead ends: 363 [2020-08-21 14:07:33,059 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 14:07:33,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:07:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 14:07:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 182. [2020-08-21 14:07:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-21 14:07:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 266 transitions. [2020-08-21 14:07:33,129 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 266 transitions. Word has length 28 [2020-08-21 14:07:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:07:33,130 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 266 transitions. [2020-08-21 14:07:33,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 14:07:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 266 transitions. [2020-08-21 14:07:33,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-21 14:07:33,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:07:33,132 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-08-21 14:07:33,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:07:33,133 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:07:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:07:33,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1592117890, now seen corresponding path program 1 times [2020-08-21 14:07:33,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:07:33,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226272077] [2020-08-21 14:07:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:07:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:07:33,178 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:07:33,179 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:07:33,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:07:33,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:07:33 BoogieIcfgContainer [2020-08-21 14:07:33,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:07:33,212 INFO L168 Benchmark]: Toolchain (without parser) took 2506.16 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 100.4 MB in the beginning and 162.9 MB in the end (delta: -62.4 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:07:33,213 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 14:07:33,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.29 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 176.9 MB in the end (delta: -76.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:07:33,215 INFO L168 Benchmark]: Boogie Preprocessor took 56.67 ms. Allocated memory is still 201.9 MB. Free memory was 176.9 MB in the beginning and 174.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:07:33,216 INFO L168 Benchmark]: RCFGBuilder took 832.16 ms. Allocated memory is still 201.9 MB. Free memory was 174.3 MB in the beginning and 122.0 MB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:07:33,218 INFO L168 Benchmark]: TraceAbstraction took 1035.66 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 122.0 MB in the beginning and 162.9 MB in the end (delta: -40.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 14:07:33,229 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 576.29 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 176.9 MB in the end (delta: -76.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.67 ms. Allocated memory is still 201.9 MB. Free memory was 176.9 MB in the beginning and 174.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 832.16 ms. Allocated memory is still 201.9 MB. Free memory was 174.3 MB in the beginning and 122.0 MB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1035.66 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 122.0 MB in the beginning and 162.9 MB in the end (delta: -40.8 MB). There was no memory consumed. Max. memory is 7.1 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 [L640] CALL ssl3_accept(s) [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 4 procedures, 155 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 208 SDtfs, 428 SDslu, 343 SDs, 0 SdLazy, 182 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1485 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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! Received shutdown request...