/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_clnt_2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:33:26,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:33:26,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:33:26,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:33:26,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:33:26,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:33:26,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:33:26,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:33:26,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:33:26,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:33:26,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:33:26,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:33:26,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:33:26,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:33:26,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:33:26,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:33:26,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:33:26,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:33:26,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:33:26,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:33:26,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:33:26,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:33:26,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:33:26,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:33:26,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:33:26,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:33:26,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:33:26,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:33:26,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:33:26,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:33:26,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:33:26,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:33:26,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:33:26,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:33:26,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:33:26,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:33:26,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:33:26,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:33:26,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:33:26,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:33:26,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:33:26,466 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 14:33:26,521 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:33:26,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:33:26,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:33:26,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:33:26,524 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:33:26,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:33:26,525 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:33:26,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:33:26,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:33:26,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:33:26,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:33:26,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:33:26,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:33:26,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:33:26,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:33:26,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:33:26,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:33:26,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:33:26,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:33:26,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:33:26,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:33:26,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:26,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:33:26,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:33:26,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:33:26,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:33:26,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:33:26,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:33:26,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:33:26,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:33:27,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:33:27,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:33:27,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:33:27,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:33:27,073 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:33:27,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2020-09-25 14:33:27,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e1c91323/a1d10a02bc08433fb0902a38a79c7d5d/FLAGda4b824ad [2020-09-25 14:33:27,763 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:33:27,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2020-09-25 14:33:27,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e1c91323/a1d10a02bc08433fb0902a38a79c7d5d/FLAGda4b824ad [2020-09-25 14:33:28,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e1c91323/a1d10a02bc08433fb0902a38a79c7d5d [2020-09-25 14:33:28,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:33:28,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:33:28,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:28,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:33:28,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:33:28,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:28" (1/1) ... [2020-09-25 14:33:28,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4576fe6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28, skipping insertion in model container [2020-09-25 14:33:28,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:28" (1/1) ... [2020-09-25 14:33:28,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:33:28,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:33:28,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:28,473 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:33:28,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:28,659 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:33:28,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28 WrapperNode [2020-09-25 14:33:28,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:28,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:33:28,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:33:28,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:33:28,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28" (1/1) ... [2020-09-25 14:33:28,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28" (1/1) ... [2020-09-25 14:33:28,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28" (1/1) ... [2020-09-25 14:33:28,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28" (1/1) ... [2020-09-25 14:33:28,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28" (1/1) ... [2020-09-25 14:33:28,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28" (1/1) ... [2020-09-25 14:33:28,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28" (1/1) ... [2020-09-25 14:33:28,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:33:28,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:33:28,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:33:28,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:33:28,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28" (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 14:33:28,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:33:28,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:33:28,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-09-25 14:33:28,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:33:28,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:33:28,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:33:28,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:33:28,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 14:33:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-09-25 14:33:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:33:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:33:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:33:29,016 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:29,733 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-09-25 14:33:29,734 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-09-25 14:33:29,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:33:29,763 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:33:29,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:29 BoogieIcfgContainer [2020-09-25 14:33:29,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:33:29,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:33:29,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:33:29,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:33:29,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:33:28" (1/3) ... [2020-09-25 14:33:29,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bbe58c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:29, skipping insertion in model container [2020-09-25 14:33:29,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:28" (2/3) ... [2020-09-25 14:33:29,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bbe58c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:29, skipping insertion in model container [2020-09-25 14:33:29,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:29" (3/3) ... [2020-09-25 14:33:29,781 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-1.c [2020-09-25 14:33:29,794 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:33:29,806 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:33:29,829 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:33:29,865 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:33:29,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:33:29,865 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:33:29,865 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:33:29,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:33:29,866 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:33:29,866 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:33:29,866 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:33:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states. [2020-09-25 14:33:29,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 14:33:29,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:29,921 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, 1] [2020-09-25 14:33:29,921 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:29,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:29,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1688119681, now seen corresponding path program 1 times [2020-09-25 14:33:29,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:29,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044545250] [2020-09-25 14:33:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:31,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:31,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 14:33:31,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:31,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-09-25 14:33:31,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:31,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:33:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 14:33:31,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:33:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:31,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:31,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:31,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:31,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:31,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:31,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:31,667 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 14:33:31,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044545250] [2020-09-25 14:33:31,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:31,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:33:31,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89140852] [2020-09-25 14:33:31,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:33:31,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:31,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:33:31,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:33:31,701 INFO L87 Difference]: Start difference. First operand 385 states. Second operand 6 states. [2020-09-25 14:33:31,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:31,989 INFO L93 Difference]: Finished difference Result 629 states and 804 transitions. [2020-09-25 14:33:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:33:31,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 14:33:31,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:32,012 INFO L225 Difference]: With dead ends: 629 [2020-09-25 14:33:32,013 INFO L226 Difference]: Without dead ends: 346 [2020-09-25 14:33:32,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:33:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-09-25 14:33:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2020-09-25 14:33:32,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-09-25 14:33:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 403 transitions. [2020-09-25 14:33:32,099 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 403 transitions. Word has length 161 [2020-09-25 14:33:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:32,101 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 403 transitions. [2020-09-25 14:33:32,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:33:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 403 transitions. [2020-09-25 14:33:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 14:33:32,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:32,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:32,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:33:32,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:32,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:32,107 INFO L82 PathProgramCache]: Analyzing trace with hash -975331194, now seen corresponding path program 1 times [2020-09-25 14:33:32,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:32,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755352180] [2020-09-25 14:33:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:32,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:32,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:32,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 14:33:32,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 14:33:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:32,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-25 14:33:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:33:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:32,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:32,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:32,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:32,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:32,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:32,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:32,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:32,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:33:32,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755352180] [2020-09-25 14:33:32,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:32,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:32,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116659710] [2020-09-25 14:33:32,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:32,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:32,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:32,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:32,565 INFO L87 Difference]: Start difference. First operand 346 states and 403 transitions. Second operand 3 states. [2020-09-25 14:33:32,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:32,629 INFO L93 Difference]: Finished difference Result 739 states and 903 transitions. [2020-09-25 14:33:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:32,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-09-25 14:33:32,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:32,635 INFO L225 Difference]: With dead ends: 739 [2020-09-25 14:33:32,636 INFO L226 Difference]: Without dead ends: 539 [2020-09-25 14:33:32,638 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 14:33:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-09-25 14:33:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2020-09-25 14:33:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-25 14:33:32,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 645 transitions. [2020-09-25 14:33:32,694 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 645 transitions. Word has length 184 [2020-09-25 14:33:32,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:32,695 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 645 transitions. [2020-09-25 14:33:32,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 645 transitions. [2020-09-25 14:33:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 14:33:32,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:32,710 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:32,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:33:32,711 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:32,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:32,711 INFO L82 PathProgramCache]: Analyzing trace with hash -574346418, now seen corresponding path program 1 times [2020-09-25 14:33:32,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:32,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868546954] [2020-09-25 14:33:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:32,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:32,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:33,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:33,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 14:33:33,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:33,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-25 14:33:33,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:33,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-09-25 14:33:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:33:33,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:33,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:33,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:33,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:33,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:33,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:33,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:33,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:33:33,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868546954] [2020-09-25 14:33:33,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:33,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:33,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128180295] [2020-09-25 14:33:33,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:33,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:33,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:33,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:33,230 INFO L87 Difference]: Start difference. First operand 539 states and 645 transitions. Second operand 3 states. [2020-09-25 14:33:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:33,542 INFO L93 Difference]: Finished difference Result 1073 states and 1360 transitions. [2020-09-25 14:33:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:33,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-09-25 14:33:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:33,549 INFO L225 Difference]: With dead ends: 1073 [2020-09-25 14:33:33,549 INFO L226 Difference]: Without dead ends: 680 [2020-09-25 14:33:33,551 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 14:33:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-09-25 14:33:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 627. [2020-09-25 14:33:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-09-25 14:33:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 753 transitions. [2020-09-25 14:33:33,578 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 753 transitions. Word has length 204 [2020-09-25 14:33:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:33,579 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 753 transitions. [2020-09-25 14:33:33,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 753 transitions. [2020-09-25 14:33:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 14:33:33,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:33,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:33,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:33:33,585 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:33,586 INFO L82 PathProgramCache]: Analyzing trace with hash -375106847, now seen corresponding path program 1 times [2020-09-25 14:33:33,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:33,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409496959] [2020-09-25 14:33:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:34,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:34,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:34,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 14:33:34,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-09-25 14:33:34,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:34,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-25 14:33:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:33:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:34,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:34,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:34,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:34,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:33:34,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409496959] [2020-09-25 14:33:34,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:34,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:34,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420044173] [2020-09-25 14:33:34,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:34,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:34,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:34,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:34,807 INFO L87 Difference]: Start difference. First operand 627 states and 753 transitions. Second operand 3 states. [2020-09-25 14:33:34,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:34,894 INFO L93 Difference]: Finished difference Result 1108 states and 1361 transitions. [2020-09-25 14:33:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:34,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-09-25 14:33:34,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:34,900 INFO L225 Difference]: With dead ends: 1108 [2020-09-25 14:33:34,901 INFO L226 Difference]: Without dead ends: 864 [2020-09-25 14:33:34,902 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 14:33:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-09-25 14:33:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2020-09-25 14:33:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-09-25 14:33:34,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1050 transitions. [2020-09-25 14:33:34,932 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1050 transitions. Word has length 211 [2020-09-25 14:33:34,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:34,933 INFO L479 AbstractCegarLoop]: Abstraction has 864 states and 1050 transitions. [2020-09-25 14:33:34,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1050 transitions. [2020-09-25 14:33:34,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 14:33:34,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:34,942 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:34,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:33:34,943 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:34,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2117708685, now seen corresponding path program 1 times [2020-09-25 14:33:34,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:34,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002513049] [2020-09-25 14:33:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:35,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:35,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:35,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 14:33:35,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:33:35,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-25 14:33:35,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:35,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:35,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 209 [2020-09-25 14:33:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:33:35,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:35,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:35,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:35,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:35,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:35,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:35,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:35,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:35,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 14:33:35,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002513049] [2020-09-25 14:33:35,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:35,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:35,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119709970] [2020-09-25 14:33:35,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:35,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:35,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:35,423 INFO L87 Difference]: Start difference. First operand 864 states and 1050 transitions. Second operand 3 states. [2020-09-25 14:33:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:35,664 INFO L93 Difference]: Finished difference Result 1768 states and 2250 transitions. [2020-09-25 14:33:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:35,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-09-25 14:33:35,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:35,671 INFO L225 Difference]: With dead ends: 1768 [2020-09-25 14:33:35,671 INFO L226 Difference]: Without dead ends: 1047 [2020-09-25 14:33:35,673 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 14:33:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-09-25 14:33:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 996. [2020-09-25 14:33:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-09-25 14:33:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1209 transitions. [2020-09-25 14:33:35,699 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1209 transitions. Word has length 225 [2020-09-25 14:33:35,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:35,699 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1209 transitions. [2020-09-25 14:33:35,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:35,700 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1209 transitions. [2020-09-25 14:33:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 14:33:35,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:35,704 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:35,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:33:35,705 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:35,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:35,705 INFO L82 PathProgramCache]: Analyzing trace with hash 333657299, now seen corresponding path program 1 times [2020-09-25 14:33:35,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:35,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384929394] [2020-09-25 14:33:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:35,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:36,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 14:33:36,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-09-25 14:33:36,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:36,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 209 [2020-09-25 14:33:36,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:33:36,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:36,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:36,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:36,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:36,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:36,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:36,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:36,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 14:33:36,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384929394] [2020-09-25 14:33:36,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:36,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:36,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492030030] [2020-09-25 14:33:36,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:36,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:36,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:36,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:36,246 INFO L87 Difference]: Start difference. First operand 996 states and 1209 transitions. Second operand 3 states. [2020-09-25 14:33:36,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:36,473 INFO L93 Difference]: Finished difference Result 2057 states and 2597 transitions. [2020-09-25 14:33:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:36,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-09-25 14:33:36,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:36,480 INFO L225 Difference]: With dead ends: 2057 [2020-09-25 14:33:36,480 INFO L226 Difference]: Without dead ends: 1207 [2020-09-25 14:33:36,482 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 14:33:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2020-09-25 14:33:36,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1062. [2020-09-25 14:33:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-09-25 14:33:36,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1311 transitions. [2020-09-25 14:33:36,510 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1311 transitions. Word has length 225 [2020-09-25 14:33:36,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:36,511 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1311 transitions. [2020-09-25 14:33:36,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:36,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1311 transitions. [2020-09-25 14:33:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 14:33:36,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:36,516 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:36,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:33:36,517 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:36,517 INFO L82 PathProgramCache]: Analyzing trace with hash 857572892, now seen corresponding path program 1 times [2020-09-25 14:33:36,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:36,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661383169] [2020-09-25 14:33:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:37,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:37,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 14:33:37,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:37,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-09-25 14:33:37,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:37,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-25 14:33:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:33:37,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:37,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:37,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:37,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:37,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:37,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:37,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 14:33:37,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661383169] [2020-09-25 14:33:37,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:37,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:37,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690335125] [2020-09-25 14:33:37,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:37,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:37,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:37,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:37,620 INFO L87 Difference]: Start difference. First operand 1062 states and 1311 transitions. Second operand 3 states. [2020-09-25 14:33:37,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:37,656 INFO L93 Difference]: Finished difference Result 2789 states and 3480 transitions. [2020-09-25 14:33:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:37,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-09-25 14:33:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:37,666 INFO L225 Difference]: With dead ends: 2789 [2020-09-25 14:33:37,666 INFO L226 Difference]: Without dead ends: 1873 [2020-09-25 14:33:37,669 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 14:33:37,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2020-09-25 14:33:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1871. [2020-09-25 14:33:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1871 states. [2020-09-25 14:33:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2306 transitions. [2020-09-25 14:33:37,721 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2306 transitions. Word has length 232 [2020-09-25 14:33:37,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:37,722 INFO L479 AbstractCegarLoop]: Abstraction has 1871 states and 2306 transitions. [2020-09-25 14:33:37,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2306 transitions. [2020-09-25 14:33:37,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 14:33:37,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:37,728 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:37,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:33:37,729 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:37,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:37,729 INFO L82 PathProgramCache]: Analyzing trace with hash 50027276, now seen corresponding path program 1 times [2020-09-25 14:33:37,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:37,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844120011] [2020-09-25 14:33:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:37,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:39,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 14:33:39,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:39,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1467 [2020-09-25 14:33:39,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:39,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-25 14:33:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:33:39,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:39,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:39,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:39,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:39,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:39,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:39,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:33:39,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844120011] [2020-09-25 14:33:39,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:39,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:39,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367537395] [2020-09-25 14:33:39,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:39,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:39,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:39,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:39,361 INFO L87 Difference]: Start difference. First operand 1871 states and 2306 transitions. Second operand 3 states. [2020-09-25 14:33:39,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:39,417 INFO L93 Difference]: Finished difference Result 3623 states and 4495 transitions. [2020-09-25 14:33:39,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:39,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2020-09-25 14:33:39,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:39,430 INFO L225 Difference]: With dead ends: 3623 [2020-09-25 14:33:39,431 INFO L226 Difference]: Without dead ends: 1898 [2020-09-25 14:33:39,435 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 14:33:39,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2020-09-25 14:33:39,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1883. [2020-09-25 14:33:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-09-25 14:33:39,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2312 transitions. [2020-09-25 14:33:39,522 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2312 transitions. Word has length 234 [2020-09-25 14:33:39,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:39,523 INFO L479 AbstractCegarLoop]: Abstraction has 1883 states and 2312 transitions. [2020-09-25 14:33:39,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2312 transitions. [2020-09-25 14:33:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 14:33:39,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:39,534 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:39,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:33:39,534 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:39,535 INFO L82 PathProgramCache]: Analyzing trace with hash -691516916, now seen corresponding path program 1 times [2020-09-25 14:33:39,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:39,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644440243] [2020-09-25 14:33:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:39,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:41,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:41,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 14:33:41,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:33:41,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2045 [2020-09-25 14:33:41,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:41,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-09-25 14:33:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:33:41,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:41,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:41,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:41,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:41,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:41,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:41,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 14:33:41,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644440243] [2020-09-25 14:33:41,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:41,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:41,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984800758] [2020-09-25 14:33:41,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:41,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:41,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:41,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:41,752 INFO L87 Difference]: Start difference. First operand 1883 states and 2312 transitions. Second operand 3 states. [2020-09-25 14:33:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:41,846 INFO L93 Difference]: Finished difference Result 3620 states and 4484 transitions. [2020-09-25 14:33:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:41,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2020-09-25 14:33:41,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:41,862 INFO L225 Difference]: With dead ends: 3620 [2020-09-25 14:33:41,862 INFO L226 Difference]: Without dead ends: 2458 [2020-09-25 14:33:41,866 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 14:33:41,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2020-09-25 14:33:41,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2458. [2020-09-25 14:33:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2458 states. [2020-09-25 14:33:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 3029 transitions. [2020-09-25 14:33:41,955 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 3029 transitions. Word has length 238 [2020-09-25 14:33:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:41,956 INFO L479 AbstractCegarLoop]: Abstraction has 2458 states and 3029 transitions. [2020-09-25 14:33:41,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 3029 transitions. [2020-09-25 14:33:41,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 14:33:41,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:41,970 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:41,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:33:41,970 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:41,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:41,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1266606843, now seen corresponding path program 1 times [2020-09-25 14:33:41,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:41,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889701141] [2020-09-25 14:33:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:42,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:42,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 14:33:42,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-09-25 14:33:42,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:42,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-09-25 14:33:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:33:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:42,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:42,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:42,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:42,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 14:33:42,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889701141] [2020-09-25 14:33:42,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:42,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:42,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066085894] [2020-09-25 14:33:42,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:42,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:42,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:42,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:42,754 INFO L87 Difference]: Start difference. First operand 2458 states and 3029 transitions. Second operand 3 states. [2020-09-25 14:33:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:42,856 INFO L93 Difference]: Finished difference Result 4770 states and 5918 transitions. [2020-09-25 14:33:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:42,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2020-09-25 14:33:42,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:42,871 INFO L225 Difference]: With dead ends: 4770 [2020-09-25 14:33:42,872 INFO L226 Difference]: Without dead ends: 3033 [2020-09-25 14:33:42,876 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 14:33:42,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2020-09-25 14:33:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 3033. [2020-09-25 14:33:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3033 states. [2020-09-25 14:33:42,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 3748 transitions. [2020-09-25 14:33:42,981 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 3748 transitions. Word has length 249 [2020-09-25 14:33:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:42,982 INFO L479 AbstractCegarLoop]: Abstraction has 3033 states and 3748 transitions. [2020-09-25 14:33:42,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 3748 transitions. [2020-09-25 14:33:42,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-25 14:33:42,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:42,994 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:42,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:33:42,995 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:42,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:42,995 INFO L82 PathProgramCache]: Analyzing trace with hash 127538036, now seen corresponding path program 1 times [2020-09-25 14:33:42,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:42,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410719664] [2020-09-25 14:33:42,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:33:43,056 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:33:43,056 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:33:43,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:33:43,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:33:43 BoogieIcfgContainer [2020-09-25 14:33:43,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:33:43,121 INFO L168 Benchmark]: Toolchain (without parser) took 15054.25 ms. Allocated memory was 146.8 MB in the beginning and 462.4 MB in the end (delta: 315.6 MB). Free memory was 102.5 MB in the beginning and 351.2 MB in the end (delta: -248.7 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,122 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.21 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.9 MB in the beginning and 179.4 MB in the end (delta: -77.5 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,128 INFO L168 Benchmark]: Boogie Preprocessor took 75.66 ms. Allocated memory is still 203.9 MB. Free memory was 179.4 MB in the beginning and 176.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,129 INFO L168 Benchmark]: RCFGBuilder took 1035.46 ms. Allocated memory is still 203.9 MB. Free memory was 176.6 MB in the beginning and 112.5 MB in the end (delta: 64.1 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,131 INFO L168 Benchmark]: TraceAbstraction took 13343.87 ms. Allocated memory was 203.9 MB in the beginning and 462.4 MB in the end (delta: 258.5 MB). Free memory was 112.5 MB in the beginning and 351.2 MB in the end (delta: -238.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,140 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 585.21 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.9 MB in the beginning and 179.4 MB in the end (delta: -77.5 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.66 ms. Allocated memory is still 203.9 MB. Free memory was 179.4 MB in the beginning and 176.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1035.46 ms. Allocated memory is still 203.9 MB. Free memory was 176.6 MB in the beginning and 112.5 MB in the end (delta: 64.1 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13343.87 ms. Allocated memory was 203.9 MB in the beginning and 462.4 MB in the end (delta: 258.5 MB). Free memory was 112.5 MB in the beginning and 351.2 MB in the end (delta: -238.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 548]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L553] int s ; [L557] s = 12292 [L558] CALL ssl3_connect(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__bbio = __VERIFIER_nondet_int() ; [L20] int s__wbio = __VERIFIER_nondet_int() ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L27] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L28] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 = __VERIFIER_nondet_int() ; [L60] int tmp___8 = __VERIFIER_nondet_int() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] long __cil_tmp57 ; [L66] long __cil_tmp58 ; [L67] long __cil_tmp59 ; [L68] long __cil_tmp60 ; [L69] long __cil_tmp61 ; [L70] long __cil_tmp62 ; [L71] long __cil_tmp63 ; [L72] long __cil_tmp64 ; [L73] long __cil_tmp65 ; [L77] s__state = initial_state [L78] blastFlag = 0 [L79] tmp = __VERIFIER_nondet_int() [L80] cb = 0 [L81] ret = -1 [L82] skip = 0 [L83] tmp___0 = 0 [L84] COND TRUE s__info_callback != 0 [L85] cb = s__info_callback [L91] s__in_handshake ++ [L92] COND FALSE !(tmp___1 - 12288) [L98] COND TRUE 1 [L100] state = s__state [L101] COND TRUE s__state == 12292 [L203] s__new_session = 1 [L204] s__state = 4096 [L205] s__ctx__stats__sess_connect_renegotiate ++ [L210] s__server = 0 [L211] COND TRUE cb != 0 [L215] __cil_tmp55 = s__version - 65280 [L216] COND FALSE !(__cil_tmp55 != 768) [L221] s__type = 4096 [L222] COND FALSE !(s__init_buf___0 == 0) [L234] COND FALSE !(! tmp___4) [L238] COND FALSE !(! tmp___5) [L242] s__state = 4368 [L243] s__ctx__stats__sess_connect ++ [L244] s__init_num = 0 [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND TRUE s__state == 4368 [L248] s__shutdown = 0 [L249] ret = __VERIFIER_nondet_int() [L250] COND TRUE blastFlag == 0 [L251] blastFlag = 1 [L257] COND FALSE !(ret <= 0) [L260] s__state = 4384 [L261] s__init_num = 0 [L262] COND TRUE s__bbio != s__wbio [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND TRUE s__state == 4384 [L268] ret = __VERIFIER_nondet_int() [L269] COND TRUE blastFlag == 1 [L270] blastFlag = 2 [L272] COND FALSE !(ret <= 0) [L275] COND FALSE !(\read(s__hit)) [L278] s__state = 4400 [L280] s__init_num = 0 [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND FALSE !(s__state == 4384) [L125] COND FALSE !(s__state == 4385) [L128] COND TRUE s__state == 4400 [L285] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L286] COND FALSE !(__cil_tmp56 - 256UL) [L289] ret = __VERIFIER_nondet_int() [L290] COND TRUE blastFlag == 2 [L291] blastFlag = 3 [L293] COND FALSE !(ret <= 0) [L298] s__state = 4416 [L299] s__init_num = 0 [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND FALSE !(s__state == 4384) [L125] COND FALSE !(s__state == 4385) [L128] COND FALSE !(s__state == 4400) [L131] COND FALSE !(s__state == 4401) [L134] COND TRUE s__state == 4416 [L303] ret = __VERIFIER_nondet_int() [L304] COND TRUE blastFlag == 3 [L305] blastFlag = 4 [L307] COND FALSE !(ret <= 0) [L310] s__state = 4432 [L311] s__init_num = 0 [L312] COND FALSE !(! tmp___6) [L520] COND FALSE !(! s__s3__tmp__reuse_message) [L537] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 4096) [L110] COND FALSE !(s__state == 20480) [L113] COND FALSE !(s__state == 4099) [L116] COND FALSE !(s__state == 4368) [L119] COND FALSE !(s__state == 4369) [L122] COND FALSE !(s__state == 4384) [L125] COND FALSE !(s__state == 4385) [L128] COND FALSE !(s__state == 4400) [L131] COND FALSE !(s__state == 4401) [L134] COND FALSE !(s__state == 4416) [L137] COND FALSE !(s__state == 4417) [L140] COND TRUE s__state == 4432 [L319] ret = __VERIFIER_nondet_int() [L320] COND TRUE blastFlag == 4 [L548] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 385 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.2s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4151 SDtfs, 2465 SDslu, 3633 SDs, 0 SdLazy, 569 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3033occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 266 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 2437 NumberOfCodeBlocks, 2437 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2153 ConstructedInterpolants, 0 QuantifiedInterpolants, 629488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 332/332 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...