/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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-eb0fd7c [2020-09-21 12:25:19,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:25:19,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:25:19,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:25:19,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:25:19,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:25:19,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:25:19,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:25:19,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:25:19,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:25:19,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:25:19,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:25:19,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:25:19,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:25:19,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:25:19,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:25:19,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:25:19,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:25:19,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:25:19,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:25:19,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:25:19,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:25:19,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:25:19,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:25:19,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:25:19,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:25:19,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:25:19,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:25:19,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:25:19,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:25:19,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:25:19,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:25:19,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:25:19,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:25:19,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:25:19,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:25:19,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:25:19,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:25:19,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:25:19,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:25:19,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:25:19,547 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 [2020-09-21 12:25:19,597 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:25:19,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:25:19,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:25:19,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:25:19,600 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:25:19,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:25:19,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:25:19,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:25:19,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:25:19,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:25:19,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:25:19,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:25:19,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:25:19,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:25:19,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:25:19,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:25:19,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:25:19,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:25:19,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:25:19,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:25:19,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:25:19,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:25:19,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:25:19,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:25:19,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:25:19,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:25:19,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:25:19,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:25:19,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:25:19,606 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:25:20,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:25:20,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:25:20,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:25:20,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:25:20,067 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:25:20,069 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2020-09-21 12:25:20,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2073f5d8/12c5292a78ba4cd7b831eac46742b4cd/FLAG7e8d1d6d8 [2020-09-21 12:25:20,807 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:25:20,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2020-09-21 12:25:20,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2073f5d8/12c5292a78ba4cd7b831eac46742b4cd/FLAG7e8d1d6d8 [2020-09-21 12:25:21,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2073f5d8/12c5292a78ba4cd7b831eac46742b4cd [2020-09-21 12:25:21,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:25:21,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:25:21,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:21,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:25:21,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:25:21,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:21" (1/1) ... [2020-09-21 12:25:21,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27423965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21, skipping insertion in model container [2020-09-21 12:25:21,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:21" (1/1) ... [2020-09-21 12:25:21,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:25:21,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:25:21,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:21,494 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:25:21,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:21,661 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:25:21,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21 WrapperNode [2020-09-21 12:25:21,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:21,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:25:21,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:25:21,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:25:21,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21" (1/1) ... [2020-09-21 12:25:21,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21" (1/1) ... [2020-09-21 12:25:21,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21" (1/1) ... [2020-09-21 12:25:21,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21" (1/1) ... [2020-09-21 12:25:21,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21" (1/1) ... [2020-09-21 12:25:21,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21" (1/1) ... [2020-09-21 12:25:21,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21" (1/1) ... [2020-09-21 12:25:21,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:25:21,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:25:21,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:25:21,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:25:21,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21" (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 [2020-09-21 12:25:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:25:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:25:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-09-21 12:25:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:25:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:25:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 12:25:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:25:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-21 12:25:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-09-21 12:25:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:25:21,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:25:21,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:25:22,013 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-21 12:25:22,515 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-09-21 12:25:22,516 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-09-21 12:25:22,538 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:25:22,538 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:25:22,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:22 BoogieIcfgContainer [2020-09-21 12:25:22,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:25:22,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:25:22,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:25:22,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:25:22,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:25:21" (1/3) ... [2020-09-21 12:25:22,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603e9d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:22, skipping insertion in model container [2020-09-21 12:25:22,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:21" (2/3) ... [2020-09-21 12:25:22,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603e9d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:22, skipping insertion in model container [2020-09-21 12:25:22,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:22" (3/3) ... [2020-09-21 12:25:22,556 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-1.c [2020-09-21 12:25:22,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:25:22,580 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:25:22,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:25:22,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:25:22,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:25:22,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:25:22,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:25:22,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:25:22,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:25:22,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:25:22,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:25:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states. [2020-09-21 12:25:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 12:25:22,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:22,677 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] [2020-09-21 12:25:22,677 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:22,686 INFO L82 PathProgramCache]: Analyzing trace with hash 173387410, now seen corresponding path program 1 times [2020-09-21 12:25:22,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:22,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174090666] [2020-09-21 12:25:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:23,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:25:23,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:23,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-09-21 12:25:23,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:25:23,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:25:23,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:25:23,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:23,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:23,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:23,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:23,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:23,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:23,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:23,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:23,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174090666] [2020-09-21 12:25:23,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:23,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:23,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65443252] [2020-09-21 12:25:23,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:23,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:23,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:23,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:23,860 INFO L87 Difference]: Start difference. First operand 136 states. Second operand 3 states. [2020-09-21 12:25:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:23,974 INFO L93 Difference]: Finished difference Result 377 states and 634 transitions. [2020-09-21 12:25:23,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:23,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-21 12:25:23,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:23,995 INFO L225 Difference]: With dead ends: 377 [2020-09-21 12:25:23,995 INFO L226 Difference]: Without dead ends: 220 [2020-09-21 12:25:24,001 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 [2020-09-21 12:25:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-21 12:25:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-21 12:25:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-21 12:25:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 326 transitions. [2020-09-21 12:25:24,079 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 326 transitions. Word has length 29 [2020-09-21 12:25:24,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:24,080 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 326 transitions. [2020-09-21 12:25:24,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:24,080 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 326 transitions. [2020-09-21 12:25:24,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 12:25:24,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:24,084 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:25:24,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:25:24,084 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:24,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1426924635, now seen corresponding path program 1 times [2020-09-21 12:25:24,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:24,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901499373] [2020-09-21 12:25:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:24,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:24,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 12:25:24,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:25:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-09-21 12:25:24,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 12:25:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:25:24,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:24,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:24,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:24,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:24,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:24,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:24,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:25,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901499373] [2020-09-21 12:25:25,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:25,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:25,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149424007] [2020-09-21 12:25:25,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:25,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:25,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:25,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:25,008 INFO L87 Difference]: Start difference. First operand 220 states and 326 transitions. Second operand 3 states. [2020-09-21 12:25:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:25,216 INFO L93 Difference]: Finished difference Result 470 states and 707 transitions. [2020-09-21 12:25:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:25,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-09-21 12:25:25,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:25,220 INFO L225 Difference]: With dead ends: 470 [2020-09-21 12:25:25,220 INFO L226 Difference]: Without dead ends: 262 [2020-09-21 12:25:25,223 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 [2020-09-21 12:25:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-21 12:25:25,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 254. [2020-09-21 12:25:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-21 12:25:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 370 transitions. [2020-09-21 12:25:25,242 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 370 transitions. Word has length 43 [2020-09-21 12:25:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:25,242 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 370 transitions. [2020-09-21 12:25:25,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 370 transitions. [2020-09-21 12:25:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 12:25:25,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:25,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:25:25,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:25:25,247 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:25,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1669760968, now seen corresponding path program 1 times [2020-09-21 12:25:25,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:25,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729609589] [2020-09-21 12:25:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-21 12:25:25,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:25:25,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-09-21 12:25:25,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-21 12:25:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:25:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:25,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:25,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:25,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:25,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-21 12:25:25,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729609589] [2020-09-21 12:25:25,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:25,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:26,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269586515] [2020-09-21 12:25:26,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:26,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:26,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:26,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:26,004 INFO L87 Difference]: Start difference. First operand 254 states and 370 transitions. Second operand 3 states. [2020-09-21 12:25:26,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:26,295 INFO L93 Difference]: Finished difference Result 598 states and 902 transitions. [2020-09-21 12:25:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:26,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-09-21 12:25:26,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:26,302 INFO L225 Difference]: With dead ends: 598 [2020-09-21 12:25:26,302 INFO L226 Difference]: Without dead ends: 354 [2020-09-21 12:25:26,304 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 [2020-09-21 12:25:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-09-21 12:25:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 336. [2020-09-21 12:25:26,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-09-21 12:25:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 470 transitions. [2020-09-21 12:25:26,346 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 470 transitions. Word has length 60 [2020-09-21 12:25:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:26,347 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 470 transitions. [2020-09-21 12:25:26,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 470 transitions. [2020-09-21 12:25:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 12:25:26,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:26,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:25:26,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:25:26,354 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:26,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:26,354 INFO L82 PathProgramCache]: Analyzing trace with hash 819767994, now seen corresponding path program 1 times [2020-09-21 12:25:26,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:26,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318843402] [2020-09-21 12:25:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:26,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:26,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:26,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:26,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:27,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-21 12:25:27,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:25:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-09-21 12:25:27,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:25:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:25:27,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:27,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:27,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:27,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:27,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-21 12:25:27,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318843402] [2020-09-21 12:25:27,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:27,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:27,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933843417] [2020-09-21 12:25:27,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:27,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:27,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:27,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:27,295 INFO L87 Difference]: Start difference. First operand 336 states and 470 transitions. Second operand 3 states. [2020-09-21 12:25:27,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:27,351 INFO L93 Difference]: Finished difference Result 660 states and 929 transitions. [2020-09-21 12:25:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:27,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-09-21 12:25:27,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:27,356 INFO L225 Difference]: With dead ends: 660 [2020-09-21 12:25:27,356 INFO L226 Difference]: Without dead ends: 497 [2020-09-21 12:25:27,357 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 [2020-09-21 12:25:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-09-21 12:25:27,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2020-09-21 12:25:27,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-09-21 12:25:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 696 transitions. [2020-09-21 12:25:27,374 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 696 transitions. Word has length 60 [2020-09-21 12:25:27,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:27,375 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 696 transitions. [2020-09-21 12:25:27,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 696 transitions. [2020-09-21 12:25:27,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 12:25:27,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:27,384 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-09-21 12:25:27,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:25:27,385 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:27,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:27,385 INFO L82 PathProgramCache]: Analyzing trace with hash -925543279, now seen corresponding path program 1 times [2020-09-21 12:25:27,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:27,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185902229] [2020-09-21 12:25:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:27,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:28,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:28,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:25:28,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:25:28,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-09-21 12:25:28,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:28,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:28,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-21 12:25:28,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:28,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:28,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:28,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:28,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:28,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:28,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-21 12:25:28,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185902229] [2020-09-21 12:25:28,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:28,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:28,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787404311] [2020-09-21 12:25:28,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:28,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:28,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:28,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:28,483 INFO L87 Difference]: Start difference. First operand 497 states and 696 transitions. Second operand 3 states. [2020-09-21 12:25:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:28,539 INFO L93 Difference]: Finished difference Result 982 states and 1381 transitions. [2020-09-21 12:25:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:28,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-21 12:25:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:28,546 INFO L225 Difference]: With dead ends: 982 [2020-09-21 12:25:28,546 INFO L226 Difference]: Without dead ends: 658 [2020-09-21 12:25:28,548 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 [2020-09-21 12:25:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-21 12:25:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-09-21 12:25:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-21 12:25:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 923 transitions. [2020-09-21 12:25:28,571 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 923 transitions. Word has length 79 [2020-09-21 12:25:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:28,572 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 923 transitions. [2020-09-21 12:25:28,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 923 transitions. [2020-09-21 12:25:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 12:25:28,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:28,575 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2020-09-21 12:25:28,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:25:28,575 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:28,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:28,576 INFO L82 PathProgramCache]: Analyzing trace with hash 866854985, now seen corresponding path program 1 times [2020-09-21 12:25:28,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:28,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122045682] [2020-09-21 12:25:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:28,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:28,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:28,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-21 12:25:28,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:28,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-21 12:25:28,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:28,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:28,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:28,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:25:28,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:29,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:29,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:29,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:29,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:29,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:29,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:29,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:29,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:29,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-21 12:25:29,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122045682] [2020-09-21 12:25:29,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:29,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:25:29,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337125494] [2020-09-21 12:25:29,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:25:29,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:29,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:25:29,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:25:29,029 INFO L87 Difference]: Start difference. First operand 658 states and 923 transitions. Second operand 5 states. [2020-09-21 12:25:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:29,205 INFO L93 Difference]: Finished difference Result 1307 states and 1834 transitions. [2020-09-21 12:25:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:25:29,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-09-21 12:25:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:29,211 INFO L225 Difference]: With dead ends: 1307 [2020-09-21 12:25:29,211 INFO L226 Difference]: Without dead ends: 661 [2020-09-21 12:25:29,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:25:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-21 12:25:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2020-09-21 12:25:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-09-21 12:25:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 926 transitions. [2020-09-21 12:25:29,236 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 926 transitions. Word has length 99 [2020-09-21 12:25:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:29,237 INFO L479 AbstractCegarLoop]: Abstraction has 661 states and 926 transitions. [2020-09-21 12:25:29,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:25:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 926 transitions. [2020-09-21 12:25:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-21 12:25:29,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:29,246 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] [2020-09-21 12:25:29,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:25:29,246 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:29,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:29,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2036262431, now seen corresponding path program 1 times [2020-09-21 12:25:29,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:29,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458955697] [2020-09-21 12:25:29,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:25:29,313 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:25:29,313 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:25:29,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:25:29,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:25:29 BoogieIcfgContainer [2020-09-21 12:25:29,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:25:29,373 INFO L168 Benchmark]: Toolchain (without parser) took 8271.23 ms. Allocated memory was 140.0 MB in the beginning and 325.6 MB in the end (delta: 185.6 MB). Free memory was 101.3 MB in the beginning and 286.7 MB in the end (delta: -185.4 MB). Peak memory consumption was 162.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:29,374 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:25:29,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 559.52 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 179.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:29,382 INFO L168 Benchmark]: Boogie Preprocessor took 67.38 ms. Allocated memory is still 203.4 MB. Free memory was 179.2 MB in the beginning and 176.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:29,383 INFO L168 Benchmark]: RCFGBuilder took 814.46 ms. Allocated memory is still 203.4 MB. Free memory was 176.5 MB in the beginning and 129.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:29,384 INFO L168 Benchmark]: TraceAbstraction took 6821.26 ms. Allocated memory was 203.4 MB in the beginning and 325.6 MB in the end (delta: 122.2 MB). Free memory was 129.0 MB in the beginning and 286.7 MB in the end (delta: -157.7 MB). Peak memory consumption was 127.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:29,398 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 559.52 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 179.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.38 ms. Allocated memory is still 203.4 MB. Free memory was 179.2 MB in the beginning and 176.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 814.46 ms. Allocated memory is still 203.4 MB. Free memory was 176.5 MB in the beginning and 129.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6821.26 ms. Allocated memory was 203.4 MB in the beginning and 325.6 MB in the end (delta: 122.2 MB). Free memory was 129.0 MB in the beginning and 286.7 MB in the end (delta: -157.7 MB). Peak memory consumption was 127.0 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, 136 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.6s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1099 SDtfs, 690 SDslu, 926 SDs, 0 SdLazy, 365 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=661occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 482 NumberOfCodeBlocks, 482 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 364 ConstructedInterpolants, 0 QuantifiedInterpolants, 37422 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 238/238 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...