/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 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 [2020-09-24 17:06:22,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:06:22,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:06:22,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:06:22,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:06:22,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:06:22,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:06:22,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:06:22,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:06:22,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:06:22,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:06:22,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:06:22,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:06:22,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:06:22,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:06:22,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:06:22,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:06:22,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:06:22,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:06:22,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:06:22,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:06:22,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:06:22,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:06:22,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:06:23,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:06:23,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:06:23,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:06:23,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:06:23,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:06:23,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:06:23,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:06:23,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:06:23,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:06:23,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:06:23,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:06:23,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:06:23,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:06:23,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:06:23,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:06:23,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:06:23,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:06:23,019 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 [2020-09-24 17:06:23,071 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:06:23,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:06:23,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:06:23,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:06:23,074 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:06:23,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:06:23,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:06:23,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:06:23,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:06:23,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:06:23,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:06:23,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:06:23,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:06:23,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:06:23,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:06:23,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:06:23,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:06:23,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:06:23,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:06:23,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:06:23,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:06:23,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:06:23,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:06:23,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:06:23,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:06:23,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:06:23,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:06:23,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:06:23,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:06:23,081 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;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;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;log-additional-information=true; [2020-09-24 17:06:23,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:06:23,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:06:23,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:06:23,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:06:23,549 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:06:23,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_10.cil.c [2020-09-24 17:06:23,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cf2096b9/f6382203b25740158cf5e5ba7912622b/FLAGa1bd3e85a [2020-09-24 17:06:24,204 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:06:24,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_10.cil.c [2020-09-24 17:06:24,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cf2096b9/f6382203b25740158cf5e5ba7912622b/FLAGa1bd3e85a [2020-09-24 17:06:24,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cf2096b9/f6382203b25740158cf5e5ba7912622b [2020-09-24 17:06:24,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:06:24,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:06:24,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:06:24,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:06:24,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:06:24,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:06:24" (1/1) ... [2020-09-24 17:06:24,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187bf361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:24, skipping insertion in model container [2020-09-24 17:06:24,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:06:24" (1/1) ... [2020-09-24 17:06:24,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:06:24,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:06:24,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:06:24,896 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:06:25,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:06:25,079 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:06:25,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:25 WrapperNode [2020-09-24 17:06:25,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:06:25,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:06:25,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:06:25,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:06:25,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:25" (1/1) ... [2020-09-24 17:06:25,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:25" (1/1) ... [2020-09-24 17:06:25,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:25" (1/1) ... [2020-09-24 17:06:25,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:25" (1/1) ... [2020-09-24 17:06:25,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:25" (1/1) ... [2020-09-24 17:06:25,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:25" (1/1) ... [2020-09-24 17:06:25,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:25" (1/1) ... [2020-09-24 17:06:25,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:06:25,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:06:25,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:06:25,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:06:25,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:25" (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 [2020-09-24 17:06:25,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:06:25,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:06:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 17:06:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:06:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:06:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 17:06:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:06:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 17:06:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 17:06:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:06:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:06:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:06:25,539 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 17:06:26,267 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 17:06:26,267 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 17:06:26,287 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:06:26,288 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:06:26,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:06:26 BoogieIcfgContainer [2020-09-24 17:06:26,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:06:26,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:06:26,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:06:26,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:06:26,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:06:24" (1/3) ... [2020-09-24 17:06:26,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477358c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:06:26, skipping insertion in model container [2020-09-24 17:06:26,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:25" (2/3) ... [2020-09-24 17:06:26,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477358c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:06:26, skipping insertion in model container [2020-09-24 17:06:26,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:06:26" (3/3) ... [2020-09-24 17:06:26,309 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_10.cil.c [2020-09-24 17:06:26,321 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:06:26,334 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:06:26,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:06:26,395 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:06:26,396 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:06:26,396 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:06:26,396 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:06:26,396 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:06:26,396 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:06:26,397 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:06:26,397 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:06:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states. [2020-09-24 17:06:26,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 17:06:26,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:26,447 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] [2020-09-24 17:06:26,447 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:26,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:26,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1669043660, now seen corresponding path program 1 times [2020-09-24 17:06:26,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:26,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548319958] [2020-09-24 17:06:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:27,919 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:27,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 17:06:27,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:06:27,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-09-24 17:06:27,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:06:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-24 17:06:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:27,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:06:28,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:28,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:28,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:28,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:28,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:06:28,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:28,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:28,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:28,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:06:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:28,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548319958] [2020-09-24 17:06:28,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:28,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:06:28,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168401215] [2020-09-24 17:06:28,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:06:28,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:28,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:06:28,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:06:28,198 INFO L87 Difference]: Start difference. First operand 424 states. Second operand 4 states. [2020-09-24 17:06:28,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:28,597 INFO L93 Difference]: Finished difference Result 798 states and 1029 transitions. [2020-09-24 17:06:28,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:06:28,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-24 17:06:28,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:28,622 INFO L225 Difference]: With dead ends: 798 [2020-09-24 17:06:28,623 INFO L226 Difference]: Without dead ends: 451 [2020-09-24 17:06:28,630 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 [2020-09-24 17:06:28,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-24 17:06:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-09-24 17:06:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-09-24 17:06:28,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 495 transitions. [2020-09-24 17:06:28,722 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 495 transitions. Word has length 150 [2020-09-24 17:06:28,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:28,724 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 495 transitions. [2020-09-24 17:06:28,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:06:28,724 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 495 transitions. [2020-09-24 17:06:28,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 17:06:28,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:28,729 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] [2020-09-24 17:06:28,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:06:28,730 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:28,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:28,730 INFO L82 PathProgramCache]: Analyzing trace with hash -846934987, now seen corresponding path program 1 times [2020-09-24 17:06:28,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:28,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053668523] [2020-09-24 17:06:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:28,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:29,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:29,577 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:29,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 17:06:29,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:06:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-09-24 17:06:29,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-09-24 17:06:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:06:29,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:29,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:29,643 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:29,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:29,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:29,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:29,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053668523] [2020-09-24 17:06:29,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:29,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:29,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125819911] [2020-09-24 17:06:29,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:29,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:29,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:29,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:29,682 INFO L87 Difference]: Start difference. First operand 417 states and 495 transitions. Second operand 3 states. [2020-09-24 17:06:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:29,952 INFO L93 Difference]: Finished difference Result 753 states and 947 transitions. [2020-09-24 17:06:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:29,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2020-09-24 17:06:29,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:29,957 INFO L225 Difference]: With dead ends: 753 [2020-09-24 17:06:29,958 INFO L226 Difference]: Without dead ends: 459 [2020-09-24 17:06:29,960 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 [2020-09-24 17:06:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-09-24 17:06:29,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2020-09-24 17:06:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-09-24 17:06:29,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 544 transitions. [2020-09-24 17:06:29,984 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 544 transitions. Word has length 155 [2020-09-24 17:06:29,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:29,985 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 544 transitions. [2020-09-24 17:06:29,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 544 transitions. [2020-09-24 17:06:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 17:06:29,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:29,989 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] [2020-09-24 17:06:29,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:06:29,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:29,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:29,990 INFO L82 PathProgramCache]: Analyzing trace with hash -67103983, now seen corresponding path program 1 times [2020-09-24 17:06:29,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:29,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998571180] [2020-09-24 17:06:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:30,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:30,139 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:30,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-24 17:06:30,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-24 17:06:30,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 17:06:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 17:06:30,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:30,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:30,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:30,178 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:30,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:30,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:30,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:30,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:30,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:30,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:30,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:30,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:06:30,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998571180] [2020-09-24 17:06:30,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:30,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:30,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189393208] [2020-09-24 17:06:30,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:30,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:30,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:30,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:30,201 INFO L87 Difference]: Start difference. First operand 457 states and 544 transitions. Second operand 3 states. [2020-09-24 17:06:30,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:30,289 INFO L93 Difference]: Finished difference Result 1092 states and 1345 transitions. [2020-09-24 17:06:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:30,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-09-24 17:06:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:30,295 INFO L225 Difference]: With dead ends: 1092 [2020-09-24 17:06:30,296 INFO L226 Difference]: Without dead ends: 770 [2020-09-24 17:06:30,297 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 [2020-09-24 17:06:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-09-24 17:06:30,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 768. [2020-09-24 17:06:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-09-24 17:06:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 933 transitions. [2020-09-24 17:06:30,326 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 933 transitions. Word has length 159 [2020-09-24 17:06:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:30,327 INFO L479 AbstractCegarLoop]: Abstraction has 768 states and 933 transitions. [2020-09-24 17:06:30,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:30,327 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 933 transitions. [2020-09-24 17:06:30,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 17:06:30,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:30,331 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] [2020-09-24 17:06:30,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:06:30,331 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:30,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:30,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1777748737, now seen corresponding path program 1 times [2020-09-24 17:06:30,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:30,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866282906] [2020-09-24 17:06:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:06:30,361 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:06:30,361 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:06:30,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:06:30,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:06:30 BoogieIcfgContainer [2020-09-24 17:06:30,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:06:30,399 INFO L168 Benchmark]: Toolchain (without parser) took 5874.24 ms. Allocated memory was 141.0 MB in the beginning and 283.6 MB in the end (delta: 142.6 MB). Free memory was 102.5 MB in the beginning and 182.7 MB in the end (delta: -80.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:30,400 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:06:30,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.43 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 180.1 MB in the end (delta: -78.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:30,402 INFO L168 Benchmark]: Boogie Preprocessor took 83.85 ms. Allocated memory is still 205.0 MB. Free memory was 180.1 MB in the beginning and 177.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:30,403 INFO L168 Benchmark]: RCFGBuilder took 1133.20 ms. Allocated memory is still 205.0 MB. Free memory was 177.5 MB in the beginning and 107.6 MB in the end (delta: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:30,404 INFO L168 Benchmark]: TraceAbstraction took 4095.39 ms. Allocated memory was 205.0 MB in the beginning and 283.6 MB in the end (delta: 78.6 MB). Free memory was 106.9 MB in the beginning and 182.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:30,408 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 552.43 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 180.1 MB in the end (delta: -78.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.85 ms. Allocated memory is still 205.0 MB. Free memory was 180.1 MB in the beginning and 177.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1133.20 ms. Allocated memory is still 205.0 MB. Free memory was 177.5 MB in the beginning and 107.6 MB in the end (delta: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4095.39 ms. Allocated memory was 205.0 MB in the beginning and 283.6 MB in the end (delta: 78.6 MB). Free memory was 106.9 MB in the beginning and 182.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 2.8 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: 3.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1402 SDtfs, 1019 SDslu, 1242 SDs, 0 SdLazy, 319 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=768occurred 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, 38 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 461 ConstructedInterpolants, 0 QuantifiedInterpolants, 84845 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...