/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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-c90d42b [2020-09-25 08:56:55,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:56:55,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:56:55,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:56:55,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:56:55,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:56:55,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:56:55,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:56:55,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:56:55,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:56:55,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:56:55,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:56:55,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:56:55,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:56:55,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:56:55,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:56:55,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:56:55,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:56:55,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:56:55,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:56:55,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:56:55,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:56:55,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:56:55,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:56:55,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:56:55,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:56:55,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:56:55,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:56:55,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:56:55,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:56:55,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:56:55,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:56:55,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:56:55,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:56:55,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:56:55,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:56:55,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:56:55,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:56:55,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:56:55,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:56:55,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:56:55,445 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 08:56:55,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:56:55,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:56:55,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:56:55,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:56:55,490 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:56:55,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:56:55,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:56:55,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:56:55,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:56:55,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:56:55,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:56:55,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:56:55,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:56:55,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:56:55,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:56:55,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:56:55,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:56:55,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:56:55,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:56:55,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:56:55,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:56:55,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:56:55,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:56:55,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:56:55,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:56:55,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:56:55,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:56:55,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:56:55,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:56:55,501 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:56:55,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:56:56,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:56:56,022 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:56:56,024 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:56:56,026 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:56:56,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_10.cil.c [2020-09-25 08:56:56,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78eb1e917/b5893f44bed145958be4a0a39920f92e/FLAGf6a7c5d5f [2020-09-25 08:56:56,752 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:56:56,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_10.cil.c [2020-09-25 08:56:56,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78eb1e917/b5893f44bed145958be4a0a39920f92e/FLAGf6a7c5d5f [2020-09-25 08:56:57,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78eb1e917/b5893f44bed145958be4a0a39920f92e [2020-09-25 08:56:57,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:56:57,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:56:57,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:56:57,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:56:57,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:56:57,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:56:57" (1/1) ... [2020-09-25 08:56:57,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19617743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57, skipping insertion in model container [2020-09-25 08:56:57,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:56:57" (1/1) ... [2020-09-25 08:56:57,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:56:57,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:56:57,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:56:57,423 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:56:57,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:56:57,603 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:56:57,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57 WrapperNode [2020-09-25 08:56:57,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:56:57,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:56:57,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:56:57,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:56:57,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57" (1/1) ... [2020-09-25 08:56:57,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57" (1/1) ... [2020-09-25 08:56:57,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57" (1/1) ... [2020-09-25 08:56:57,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57" (1/1) ... [2020-09-25 08:56:57,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57" (1/1) ... [2020-09-25 08:56:57,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57" (1/1) ... [2020-09-25 08:56:57,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57" (1/1) ... [2020-09-25 08:56:57,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:56:57,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:56:57,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:56:57,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:56:57,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57" (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 08:56:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:56:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:56:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 08:56:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:56:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:56:57,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:56:57,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:56:57,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 08:56:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 08:56:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:56:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:56:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:56:58,001 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 08:56:58,736 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 08:56:58,736 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 08:56:58,755 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:56:58,755 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:56:58,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:56:58 BoogieIcfgContainer [2020-09-25 08:56:58,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:56:58,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:56:58,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:56:58,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:56:58,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:56:57" (1/3) ... [2020-09-25 08:56:58,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5353ed74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:56:58, skipping insertion in model container [2020-09-25 08:56:58,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:57" (2/3) ... [2020-09-25 08:56:58,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5353ed74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:56:58, skipping insertion in model container [2020-09-25 08:56:58,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:56:58" (3/3) ... [2020-09-25 08:56:58,778 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_10.cil.c [2020-09-25 08:56:58,790 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:56:58,802 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:56:58,826 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:56:58,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:56:58,869 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:56:58,869 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:56:58,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:56:58,869 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:56:58,869 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:56:58,870 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:56:58,870 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:56:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states. [2020-09-25 08:56:58,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 08:56:58,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:56:58,927 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] [2020-09-25 08:56:58,927 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:56:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:56:58,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1669043660, now seen corresponding path program 1 times [2020-09-25 08:56:58,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:56:58,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224745996] [2020-09-25 08:56:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:56:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:59,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:00,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:00,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 08:57:00,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-09-25 08:57:00,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:00,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:00,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:00,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 08:57:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 08:57:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:57:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:00,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:00,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:00,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:00,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:00,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:00,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:00,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:00,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:00,564 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 08:57:00,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224745996] [2020-09-25 08:57:00,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:00,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:00,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772750895] [2020-09-25 08:57:00,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:00,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:00,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:00,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:00,598 INFO L87 Difference]: Start difference. First operand 424 states. Second operand 4 states. [2020-09-25 08:57:01,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:01,082 INFO L93 Difference]: Finished difference Result 798 states and 1029 transitions. [2020-09-25 08:57:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:01,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 08:57:01,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:01,135 INFO L225 Difference]: With dead ends: 798 [2020-09-25 08:57:01,136 INFO L226 Difference]: Without dead ends: 451 [2020-09-25 08:57:01,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:01,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-25 08:57:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-09-25 08:57:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-09-25 08:57:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 495 transitions. [2020-09-25 08:57:01,288 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 495 transitions. Word has length 150 [2020-09-25 08:57:01,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:01,295 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 495 transitions. [2020-09-25 08:57:01,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:01,298 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 495 transitions. [2020-09-25 08:57:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 08:57:01,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:01,316 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] [2020-09-25 08:57:01,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:57:01,316 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:01,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:01,317 INFO L82 PathProgramCache]: Analyzing trace with hash -846934987, now seen corresponding path program 1 times [2020-09-25 08:57:01,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:01,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646718938] [2020-09-25 08:57:01,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:02,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:02,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 08:57:02,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:02,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 808 [2020-09-25 08:57:02,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:02,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 08:57:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:57:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:02,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:02,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:02,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:02,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:02,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:02,241 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 08:57:02,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646718938] [2020-09-25 08:57:02,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:02,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:02,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720444309] [2020-09-25 08:57:02,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:02,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:02,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:02,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:02,246 INFO L87 Difference]: Start difference. First operand 417 states and 495 transitions. Second operand 4 states. [2020-09-25 08:57:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:02,518 INFO L93 Difference]: Finished difference Result 736 states and 898 transitions. [2020-09-25 08:57:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:02,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 08:57:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:02,522 INFO L225 Difference]: With dead ends: 736 [2020-09-25 08:57:02,523 INFO L226 Difference]: Without dead ends: 454 [2020-09-25 08:57:02,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:02,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-09-25 08:57:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 417. [2020-09-25 08:57:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-09-25 08:57:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 495 transitions. [2020-09-25 08:57:02,545 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 495 transitions. Word has length 155 [2020-09-25 08:57:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:02,546 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 495 transitions. [2020-09-25 08:57:02,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:02,546 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 495 transitions. [2020-09-25 08:57:02,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 08:57:02,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:02,550 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] [2020-09-25 08:57:02,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:57:02,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:02,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:02,551 INFO L82 PathProgramCache]: Analyzing trace with hash -67103983, now seen corresponding path program 1 times [2020-09-25 08:57:02,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:02,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597107961] [2020-09-25 08:57:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:02,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:02,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 08:57:02,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:02,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 08:57:02,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:02,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:02,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:02,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 08:57:02,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:57:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:02,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:02,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:02,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:02,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:02,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:02,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:02,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:02,775 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 08:57:02,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597107961] [2020-09-25 08:57:02,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:02,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:02,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948656128] [2020-09-25 08:57:02,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:02,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:02,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:02,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:02,778 INFO L87 Difference]: Start difference. First operand 417 states and 495 transitions. Second operand 3 states. [2020-09-25 08:57:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:02,844 INFO L93 Difference]: Finished difference Result 972 states and 1198 transitions. [2020-09-25 08:57:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:02,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-09-25 08:57:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:02,850 INFO L225 Difference]: With dead ends: 972 [2020-09-25 08:57:02,850 INFO L226 Difference]: Without dead ends: 690 [2020-09-25 08:57:02,852 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 08:57:02,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-09-25 08:57:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 688. [2020-09-25 08:57:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-09-25 08:57:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 835 transitions. [2020-09-25 08:57:02,886 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 835 transitions. Word has length 159 [2020-09-25 08:57:02,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:02,886 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 835 transitions. [2020-09-25 08:57:02,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 835 transitions. [2020-09-25 08:57:02,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 08:57:02,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:02,890 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] [2020-09-25 08:57:02,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:57:02,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:02,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1777748737, now seen corresponding path program 1 times [2020-09-25 08:57:02,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:02,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376017891] [2020-09-25 08:57:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:57:02,916 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:57:02,916 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:57:02,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:57:02,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:57:02 BoogieIcfgContainer [2020-09-25 08:57:02,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:57:02,961 INFO L168 Benchmark]: Toolchain (without parser) took 5923.09 ms. Allocated memory was 140.0 MB in the beginning and 283.1 MB in the end (delta: 143.1 MB). Free memory was 102.7 MB in the beginning and 189.0 MB in the end (delta: -86.4 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:02,962 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 08:57:02,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 562.15 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 178.4 MB in the end (delta: -76.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:02,964 INFO L168 Benchmark]: Boogie Preprocessor took 67.32 ms. Allocated memory is still 203.4 MB. Free memory was 178.4 MB in the beginning and 175.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:02,965 INFO L168 Benchmark]: RCFGBuilder took 1092.98 ms. Allocated memory is still 203.4 MB. Free memory was 175.6 MB in the beginning and 105.2 MB in the end (delta: 70.4 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:02,966 INFO L168 Benchmark]: TraceAbstraction took 4189.63 ms. Allocated memory was 203.4 MB in the beginning and 283.1 MB in the end (delta: 79.7 MB). Free memory was 105.2 MB in the beginning and 189.0 MB in the end (delta: -83.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:57:02,970 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 562.15 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 178.4 MB in the end (delta: -76.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.32 ms. Allocated memory is still 203.4 MB. Free memory was 178.4 MB in the beginning and 175.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1092.98 ms. Allocated memory is still 203.4 MB. Free memory was 175.6 MB in the beginning and 105.2 MB in the end (delta: 70.4 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4189.63 ms. Allocated memory was 203.4 MB in the beginning and 283.1 MB in the end (delta: 79.7 MB). Free memory was 105.2 MB in the beginning and 189.0 MB in the end (delta: -83.8 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, 424 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1312 SDtfs, 1460 SDslu, 1293 SDs, 0 SdLazy, 334 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=688occurred in iteration=3, 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, 3 MinimizatonAttempts, 73 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 461 ConstructedInterpolants, 0 QuantifiedInterpolants, 88541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...