/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_10.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:33:23,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:33:23,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:33:23,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 16:33:23,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:33:23,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:33:23,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:33:23,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:33:23,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:33:23,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:33:23,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:33:23,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:33:23,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:33:23,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:33:23,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:33:23,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:33:23,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:33:23,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:33:23,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:33:23,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:33:23,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:33:23,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:33:23,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:33:23,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:33:23,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:33:23,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:33:23,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:33:23,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:33:23,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:33:23,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:33:23,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:33:23,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:33:23,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:33:23,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:33:23,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:33:23,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:33:23,306 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:33:23,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:33:23,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:33:23,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:33:23,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:33:23,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:33:23,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:33:23,308 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:33:23,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:33:23,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:33:23,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:33:23,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:33:23,805 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:33:23,807 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_10.cil.c [2020-09-04 16:33:23,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaa2244f6/b5a50a006fab412fb1180bca5fafbb0c/FLAGfad5ca155 [2020-09-04 16:33:24,657 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:33:24,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_10.cil.c [2020-09-04 16:33:24,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaa2244f6/b5a50a006fab412fb1180bca5fafbb0c/FLAGfad5ca155 [2020-09-04 16:33:24,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaa2244f6/b5a50a006fab412fb1180bca5fafbb0c [2020-09-04 16:33:24,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:33:24,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:33:24,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:24,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:33:24,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:33:24,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:24" (1/1) ... [2020-09-04 16:33:24,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:24, skipping insertion in model container [2020-09-04 16:33:24,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:33:24" (1/1) ... [2020-09-04 16:33:24,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:33:24,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:33:25,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:25,334 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:33:25,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:33:25,523 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:33:25,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:25 WrapperNode [2020-09-04 16:33:25,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:33:25,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:33:25,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:33:25,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:33:25,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:25" (1/1) ... [2020-09-04 16:33:25,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:25" (1/1) ... [2020-09-04 16:33:25,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:25" (1/1) ... [2020-09-04 16:33:25,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:25" (1/1) ... [2020-09-04 16:33:25,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:25" (1/1) ... [2020-09-04 16:33:25,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:25" (1/1) ... [2020-09-04 16:33:25,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:25" (1/1) ... [2020-09-04 16:33:25,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:33:25,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:33:25,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:33:25,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:33:25,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:25" (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 [2020-09-04 16:33:25,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:33:25,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:33:25,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-04 16:33:25,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:33:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:33:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 16:33:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:33:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-04 16:33:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-04 16:33:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:33:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:33:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:33:25,995 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:33:26,695 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-04 16:33:26,696 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-04 16:33:26,715 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:33:26,715 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 16:33:26,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:26 BoogieIcfgContainer [2020-09-04 16:33:26,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:33:26,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:33:26,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:33:26,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:33:26,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:33:24" (1/3) ... [2020-09-04 16:33:26,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7db6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:26, skipping insertion in model container [2020-09-04 16:33:26,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:33:25" (2/3) ... [2020-09-04 16:33:26,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7db6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:33:26, skipping insertion in model container [2020-09-04 16:33:26,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:33:26" (3/3) ... [2020-09-04 16:33:26,739 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_10.cil.c [2020-09-04 16:33:26,753 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:33:26,767 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:33:26,792 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:33:26,826 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:33:26,827 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:33:26,827 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:33:26,827 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:33:26,827 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:33:26,828 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:33:26,828 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:33:26,828 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:33:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states. [2020-09-04 16:33:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-04 16:33:26,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:26,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:26,884 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1669043660, now seen corresponding path program 1 times [2020-09-04 16:33:26,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:26,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876469925] [2020-09-04 16:33:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:26,987 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:27,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876469925] [2020-09-04 16:33:27,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:27,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:33:27,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760462690] [2020-09-04 16:33:27,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:33:27,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:27,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:33:27,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:33:27,489 INFO L87 Difference]: Start difference. First operand 424 states. Second operand 6 states. [2020-09-04 16:33:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:28,062 INFO L93 Difference]: Finished difference Result 806 states and 1062 transitions. [2020-09-04 16:33:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:33:28,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-09-04 16:33:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:28,094 INFO L225 Difference]: With dead ends: 806 [2020-09-04 16:33:28,095 INFO L226 Difference]: Without dead ends: 459 [2020-09-04 16:33:28,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:33:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-09-04 16:33:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 443. [2020-09-04 16:33:28,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-09-04 16:33:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 527 transitions. [2020-09-04 16:33:28,231 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 527 transitions. Word has length 150 [2020-09-04 16:33:28,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:28,233 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 527 transitions. [2020-09-04 16:33:28,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:33:28,233 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 527 transitions. [2020-09-04 16:33:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-04 16:33:28,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:28,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:28,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:33:28,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:28,246 INFO L82 PathProgramCache]: Analyzing trace with hash -67103983, now seen corresponding path program 1 times [2020-09-04 16:33:28,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:28,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918217740] [2020-09-04 16:33:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:28,252 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:28,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918217740] [2020-09-04 16:33:28,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:28,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:33:28,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481202040] [2020-09-04 16:33:28,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:33:28,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:28,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:33:28,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:33:28,487 INFO L87 Difference]: Start difference. First operand 443 states and 527 transitions. Second operand 3 states. [2020-09-04 16:33:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:28,619 INFO L93 Difference]: Finished difference Result 1050 states and 1294 transitions. [2020-09-04 16:33:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:33:28,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-09-04 16:33:28,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:28,627 INFO L225 Difference]: With dead ends: 1050 [2020-09-04 16:33:28,627 INFO L226 Difference]: Without dead ends: 742 [2020-09-04 16:33:28,635 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 [2020-09-04 16:33:28,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-09-04 16:33:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 740. [2020-09-04 16:33:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-09-04 16:33:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 899 transitions. [2020-09-04 16:33:28,717 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 899 transitions. Word has length 159 [2020-09-04 16:33:28,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:28,720 INFO L479 AbstractCegarLoop]: Abstraction has 740 states and 899 transitions. [2020-09-04 16:33:28,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:33:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 899 transitions. [2020-09-04 16:33:28,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-04 16:33:28,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:28,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:28,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:33:28,738 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:28,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:28,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1777748737, now seen corresponding path program 1 times [2020-09-04 16:33:28,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:28,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707963373] [2020-09-04 16:33:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:28,744 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:33:28,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:33:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:33:28,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:33:28,893 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:33:28,894 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:33:28,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:33:28,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:33:28 BoogieIcfgContainer [2020-09-04 16:33:28,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:33:28,950 INFO L168 Benchmark]: Toolchain (without parser) took 4033.66 ms. Allocated memory was 137.4 MB in the beginning and 252.7 MB in the end (delta: 115.3 MB). Free memory was 101.4 MB in the beginning and 127.0 MB in the end (delta: -25.7 MB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:28,954 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-04 16:33:28,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.46 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 177.9 MB in the end (delta: -76.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:28,958 INFO L168 Benchmark]: Boogie Preprocessor took 80.73 ms. Allocated memory is still 202.4 MB. Free memory was 177.9 MB in the beginning and 175.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:28,960 INFO L168 Benchmark]: RCFGBuilder took 1119.00 ms. Allocated memory is still 202.4 MB. Free memory was 174.1 MB in the beginning and 105.0 MB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:28,966 INFO L168 Benchmark]: TraceAbstraction took 2216.86 ms. Allocated memory was 202.4 MB in the beginning and 252.7 MB in the end (delta: 50.3 MB). Free memory was 103.9 MB in the beginning and 127.0 MB in the end (delta: -23.1 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:28,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 610.46 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 177.9 MB in the end (delta: -76.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.73 ms. Allocated memory is still 202.4 MB. Free memory was 177.9 MB in the beginning and 175.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1119.00 ms. Allocated memory is still 202.4 MB. Free memory was 174.1 MB in the beginning and 105.0 MB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2216.86 ms. Allocated memory was 202.4 MB in the beginning and 252.7 MB in the end (delta: 50.3 MB). Free memory was 103.9 MB in the beginning and 127.0 MB in the end (delta: -23.1 MB). Peak memory consumption was 27.2 MB. 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, 424 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1191 SDtfs, 1541 SDslu, 1302 SDs, 0 SdLazy, 218 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=740occurred in iteration=2, 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, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...