/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_6.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:10:43,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:10:43,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:10:43,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:10:43,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:10:43,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:10:43,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:10:43,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:10:43,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:10:43,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:10:43,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:10:43,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:10:43,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:10:43,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:10:43,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:10:43,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:10:43,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:10:43,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:10:43,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:10:43,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:10:43,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:10:43,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:10:43,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:10:43,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:10:43,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:10:43,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:10:43,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:10:43,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:10:43,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:10:43,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:10:43,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:10:43,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:10:43,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:10:43,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:10:43,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:10:43,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:10:43,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:10:43,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:10:43,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:10:43,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:10:43,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:10:43,472 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 [2020-09-25 11:10:43,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:10:43,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:10:43,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:10:43,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:10:43,518 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:10:43,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:10:43,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:10:43,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:10:43,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:10:43,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:10:43,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:10:43,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:10:43,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:10:43,521 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:10:43,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:10:43,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:10:43,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:10:43,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:10:43,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:10:43,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:10:43,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:10:43,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:10:43,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:10:43,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:10:43,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:10:43,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:10:43,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:10:43,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:10:43,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:10:43,525 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:10:44,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:10:44,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:10:44,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:10:44,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:10:44,036 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:10:44,038 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_6.cil-1.c [2020-09-25 11:10:44,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4eab59012/92ab943390a3462499e8e212a1c91f83/FLAG2873dcc92 [2020-09-25 11:10:44,705 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:10:44,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_6.cil-1.c [2020-09-25 11:10:44,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4eab59012/92ab943390a3462499e8e212a1c91f83/FLAG2873dcc92 [2020-09-25 11:10:45,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4eab59012/92ab943390a3462499e8e212a1c91f83 [2020-09-25 11:10:45,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:10:45,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:10:45,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:45,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:10:45,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:10:45,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6017e0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45, skipping insertion in model container [2020-09-25 11:10:45,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:10:45,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:10:45,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:45,445 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:10:45,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:45,663 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:10:45,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45 WrapperNode [2020-09-25 11:10:45,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:45,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:10:45,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:10:45,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:10:45,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:10:45,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:10:45,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:10:45,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:10:45,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (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 [2020-09-25 11:10:45,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:10:45,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:10:45,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 11:10:45,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:10:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:10:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 11:10:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:10:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 11:10:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 11:10:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:10:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:10:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:10:46,041 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 11:10:46,783 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !false; [2020-09-25 11:10:46,783 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume false; [2020-09-25 11:10:46,802 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:10:46,802 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:10:46,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:46 BoogieIcfgContainer [2020-09-25 11:10:46,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:10:46,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:10:46,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:10:46,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:10:46,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:10:45" (1/3) ... [2020-09-25 11:10:46,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd8b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:46, skipping insertion in model container [2020-09-25 11:10:46,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (2/3) ... [2020-09-25 11:10:46,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd8b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:46, skipping insertion in model container [2020-09-25 11:10:46,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:46" (3/3) ... [2020-09-25 11:10:46,822 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_6.cil-1.c [2020-09-25 11:10:46,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:10:46,846 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:10:46,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:10:46,901 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:10:46,901 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:10:46,901 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:10:46,901 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:10:46,901 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:10:46,901 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:10:46,902 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:10:46,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:10:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states. [2020-09-25 11:10:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 11:10:46,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:46,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-09-25 11:10:46,951 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:46,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:46,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1494295425, now seen corresponding path program 1 times [2020-09-25 11:10:46,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:46,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669748222] [2020-09-25 11:10:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 11:10:47,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:47,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-25 11:10:47,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-09-25 11:10:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:10:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:10:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:47,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:47,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:10:47,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:47,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:10:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:47,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669748222] [2020-09-25 11:10:47,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:47,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:47,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429975533] [2020-09-25 11:10:47,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:47,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:47,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:47,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:47,746 INFO L87 Difference]: Start difference. First operand 446 states. Second operand 3 states. [2020-09-25 11:10:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:47,904 INFO L93 Difference]: Finished difference Result 1040 states and 1383 transitions. [2020-09-25 11:10:47,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:47,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-09-25 11:10:47,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:47,941 INFO L225 Difference]: With dead ends: 1040 [2020-09-25 11:10:47,942 INFO L226 Difference]: Without dead ends: 678 [2020-09-25 11:10:47,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:47,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-09-25 11:10:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 676. [2020-09-25 11:10:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2020-09-25 11:10:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 843 transitions. [2020-09-25 11:10:48,074 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 843 transitions. Word has length 138 [2020-09-25 11:10:48,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:48,075 INFO L479 AbstractCegarLoop]: Abstraction has 676 states and 843 transitions. [2020-09-25 11:10:48,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 843 transitions. [2020-09-25 11:10:48,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 11:10:48,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:48,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-09-25 11:10:48,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:10:48,082 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:48,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:48,082 INFO L82 PathProgramCache]: Analyzing trace with hash 921362346, now seen corresponding path program 1 times [2020-09-25 11:10:48,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:48,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051914683] [2020-09-25 11:10:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:10:48,128 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:10:48,128 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:10:48,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:10:48,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:10:48 BoogieIcfgContainer [2020-09-25 11:10:48,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:10:48,165 INFO L168 Benchmark]: Toolchain (without parser) took 3135.80 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 100.7 MB in the beginning and 117.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 78.7 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:48,166 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 11:10:48,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.37 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 176.9 MB in the end (delta: -76.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:48,168 INFO L168 Benchmark]: Boogie Preprocessor took 68.42 ms. Allocated memory is still 202.4 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. [2020-09-25 11:10:48,169 INFO L168 Benchmark]: RCFGBuilder took 1078.01 ms. Allocated memory is still 202.4 MB. Free memory was 174.3 MB in the beginning and 100.2 MB in the end (delta: 74.1 MB). Peak memory consumption was 74.1 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:48,170 INFO L168 Benchmark]: TraceAbstraction took 1348.09 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 99.5 MB in the beginning and 117.9 MB in the end (delta: -18.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:48,174 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 627.37 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 176.9 MB in the end (delta: -76.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.42 ms. Allocated memory is still 202.4 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 1078.01 ms. Allocated memory is still 202.4 MB. Free memory was 174.3 MB in the beginning and 100.2 MB in the end (delta: 74.1 MB). Peak memory consumption was 74.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1348.09 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 99.5 MB in the beginning and 117.9 MB in the end (delta: -18.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 670]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L675] int s ; [L676] int tmp ; [L680] s = 8464 [L681] 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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [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 ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [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 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [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 ; [L73] s__state = initial_state [L74] blastFlag = 0 [L75] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND FALSE !(s__info_callback != 0) [L84] COND TRUE s__ctx__info_callback != 0 [L85] cb = s__ctx__info_callback [L87] COND TRUE cb != 0 [L670] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 446 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 954 SDtfs, 399 SDslu, 539 SDs, 0 SdLazy, 13 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=676occurred 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: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 20413 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...