/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=0.3 --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 12:18:04,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:18:04,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:18:04,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:18:04,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:18:04,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:18:04,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:18:04,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:18:04,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:18:04,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:18:04,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:18:04,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:18:04,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:18:04,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:18:04,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:18:04,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:18:04,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:18:04,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:18:04,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:18:04,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:18:04,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:18:04,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:18:04,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:18:04,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:18:04,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:18:04,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:18:04,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:18:04,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:18:04,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:18:04,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:18:04,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:18:04,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:18:04,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:18:04,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:18:04,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:18:04,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:18:04,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:18:04,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:18:04,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:18:04,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:18:04,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:18:04,557 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 12:18:04,582 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:18:04,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:18:04,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:18:04,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:18:04,584 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:18:04,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:18:04,585 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:18:04,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:18:04,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:18:04,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:18:04,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:18:04,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:18:04,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:18:04,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:18:04,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:18:04,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:18:04,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:18:04,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:18:04,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:18:04,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:18:04,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:18:04,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:18:04,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:18:04,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:18:04,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:18:04,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:18:04,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:18:04,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:18:04,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:18:04,590 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:18:05,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:18:05,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:18:05,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:18:05,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:18:05,092 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:18:05,094 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2020-09-25 12:18:05,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a778ddc45/cc6bd556eebc4f3ea007ad319ed159af/FLAG55333ba10 [2020-09-25 12:18:05,815 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:18:05,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_clnt_2.cil-1.c [2020-09-25 12:18:05,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a778ddc45/cc6bd556eebc4f3ea007ad319ed159af/FLAG55333ba10 [2020-09-25 12:18:06,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a778ddc45/cc6bd556eebc4f3ea007ad319ed159af [2020-09-25 12:18:06,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:18:06,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:18:06,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:18:06,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:18:06,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:18:06,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:18:06" (1/1) ... [2020-09-25 12:18:06,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559d5a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06, skipping insertion in model container [2020-09-25 12:18:06,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:18:06" (1/1) ... [2020-09-25 12:18:06,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:18:06,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:18:06,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:18:06,500 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:18:06,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:18:06,669 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:18:06,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06 WrapperNode [2020-09-25 12:18:06,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:18:06,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:18:06,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:18:06,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:18:06,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06" (1/1) ... [2020-09-25 12:18:06,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06" (1/1) ... [2020-09-25 12:18:06,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06" (1/1) ... [2020-09-25 12:18:06,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06" (1/1) ... [2020-09-25 12:18:06,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06" (1/1) ... [2020-09-25 12:18:06,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06" (1/1) ... [2020-09-25 12:18:06,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06" (1/1) ... [2020-09-25 12:18:06,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:18:06,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:18:06,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:18:06,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:18:06,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06" (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 12:18:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:18:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:18:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-09-25 12:18:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:18:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:18:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 12:18:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:18:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 12:18:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-09-25 12:18:06,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:18:06,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:18:06,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:18:07,009 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 12:18:07,644 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-09-25 12:18:07,644 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-09-25 12:18:07,670 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:18:07,671 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:18:07,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:18:07 BoogieIcfgContainer [2020-09-25 12:18:07,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:18:07,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:18:07,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:18:07,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:18:07,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:18:06" (1/3) ... [2020-09-25 12:18:07,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5aebe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:18:07, skipping insertion in model container [2020-09-25 12:18:07,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:06" (2/3) ... [2020-09-25 12:18:07,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5aebe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:18:07, skipping insertion in model container [2020-09-25 12:18:07,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:18:07" (3/3) ... [2020-09-25 12:18:07,690 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-1.c [2020-09-25 12:18:07,702 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:18:07,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:18:07,738 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:18:07,771 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:18:07,771 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:18:07,771 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:18:07,772 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:18:07,772 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:18:07,772 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:18:07,772 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:18:07,772 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:18:07,803 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states. [2020-09-25 12:18:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 12:18:07,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:07,824 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 12:18:07,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:07,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:07,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1688119681, now seen corresponding path program 1 times [2020-09-25 12:18:07,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:07,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764533851] [2020-09-25 12:18:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:08,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:08,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:09,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:09,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 12:18:09,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:09,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-09-25 12:18:09,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:09,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:09,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:18:09,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:18:09,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 12:18:09,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:18:09,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:09,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:09,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:09,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:09,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:09,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:09,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:09,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:09,498 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 12:18:09,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764533851] [2020-09-25 12:18:09,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:09,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:18:09,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260770254] [2020-09-25 12:18:09,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:18:09,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:09,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:18:09,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:18:09,531 INFO L87 Difference]: Start difference. First operand 385 states. Second operand 6 states. [2020-09-25 12:18:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:09,848 INFO L93 Difference]: Finished difference Result 629 states and 804 transitions. [2020-09-25 12:18:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:18:09,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 12:18:09,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:09,870 INFO L225 Difference]: With dead ends: 629 [2020-09-25 12:18:09,870 INFO L226 Difference]: Without dead ends: 346 [2020-09-25 12:18:09,877 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 12:18:09,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-09-25 12:18:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2020-09-25 12:18:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-09-25 12:18:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 403 transitions. [2020-09-25 12:18:09,950 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 403 transitions. Word has length 161 [2020-09-25 12:18:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:09,951 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 403 transitions. [2020-09-25 12:18:09,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:18:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 403 transitions. [2020-09-25 12:18:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 12:18:09,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:09,956 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 12:18:09,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:18:09,956 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:09,957 INFO L82 PathProgramCache]: Analyzing trace with hash -975331194, now seen corresponding path program 1 times [2020-09-25 12:18:09,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:09,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628242810] [2020-09-25 12:18:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:10,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:10,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:10,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 12:18:10,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 12:18:10,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:10,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-25 12:18:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 12:18:10,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:10,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:10,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:10,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:10,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:10,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:10,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:10,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:10,468 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 12:18:10,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628242810] [2020-09-25 12:18:10,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:10,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:10,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594690596] [2020-09-25 12:18:10,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:10,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:10,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:10,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:10,472 INFO L87 Difference]: Start difference. First operand 346 states and 403 transitions. Second operand 3 states. [2020-09-25 12:18:10,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:10,536 INFO L93 Difference]: Finished difference Result 739 states and 903 transitions. [2020-09-25 12:18:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:10,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-09-25 12:18:10,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:10,542 INFO L225 Difference]: With dead ends: 739 [2020-09-25 12:18:10,542 INFO L226 Difference]: Without dead ends: 539 [2020-09-25 12:18:10,544 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 12:18:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-09-25 12:18:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2020-09-25 12:18:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-25 12:18:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 645 transitions. [2020-09-25 12:18:10,574 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 645 transitions. Word has length 184 [2020-09-25 12:18:10,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:10,575 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 645 transitions. [2020-09-25 12:18:10,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 645 transitions. [2020-09-25 12:18:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 12:18:10,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:10,580 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 12:18:10,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:18:10,580 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:10,581 INFO L82 PathProgramCache]: Analyzing trace with hash -574346418, now seen corresponding path program 1 times [2020-09-25 12:18:10,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:10,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033274125] [2020-09-25 12:18:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:10,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:10,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 12:18:11,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:11,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-09-25 12:18:11,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:11,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-09-25 12:18:11,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:18:11,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:11,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:11,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:11,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:18:11,137 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 12:18:11,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033274125] [2020-09-25 12:18:11,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:11,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:11,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409420374] [2020-09-25 12:18:11,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:11,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:11,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:11,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:11,142 INFO L87 Difference]: Start difference. First operand 539 states and 645 transitions. Second operand 3 states. [2020-09-25 12:18:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:11,375 INFO L93 Difference]: Finished difference Result 1073 states and 1360 transitions. [2020-09-25 12:18:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:11,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-09-25 12:18:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:11,380 INFO L225 Difference]: With dead ends: 1073 [2020-09-25 12:18:11,380 INFO L226 Difference]: Without dead ends: 680 [2020-09-25 12:18:11,382 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 12:18:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-09-25 12:18:11,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 627. [2020-09-25 12:18:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-09-25 12:18:11,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 753 transitions. [2020-09-25 12:18:11,408 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 753 transitions. Word has length 204 [2020-09-25 12:18:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:11,408 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 753 transitions. [2020-09-25 12:18:11,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 753 transitions. [2020-09-25 12:18:11,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 12:18:11,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:11,414 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 12:18:11,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:18:11,415 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:11,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:11,415 INFO L82 PathProgramCache]: Analyzing trace with hash -375106847, now seen corresponding path program 1 times [2020-09-25 12:18:11,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:11,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698285069] [2020-09-25 12:18:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:12,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:12,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 12:18:12,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-25 12:18:12,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:12,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:12,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:12,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-25 12:18:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:18:12,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:18:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:12,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:12,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:12,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:12,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:12,566 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 12:18:12,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698285069] [2020-09-25 12:18:12,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:12,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:12,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338422835] [2020-09-25 12:18:12,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:12,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:12,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:12,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:12,578 INFO L87 Difference]: Start difference. First operand 627 states and 753 transitions. Second operand 3 states. [2020-09-25 12:18:12,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:12,642 INFO L93 Difference]: Finished difference Result 1108 states and 1361 transitions. [2020-09-25 12:18:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:12,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-09-25 12:18:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:12,649 INFO L225 Difference]: With dead ends: 1108 [2020-09-25 12:18:12,649 INFO L226 Difference]: Without dead ends: 864 [2020-09-25 12:18:12,650 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 12:18:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-09-25 12:18:12,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2020-09-25 12:18:12,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-09-25 12:18:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1050 transitions. [2020-09-25 12:18:12,681 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1050 transitions. Word has length 211 [2020-09-25 12:18:12,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:12,682 INFO L479 AbstractCegarLoop]: Abstraction has 864 states and 1050 transitions. [2020-09-25 12:18:12,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1050 transitions. [2020-09-25 12:18:12,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 12:18:12,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:12,686 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 12:18:12,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:18:12,687 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:12,687 INFO L82 PathProgramCache]: Analyzing trace with hash -2117708685, now seen corresponding path program 1 times [2020-09-25 12:18:12,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:12,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195761341] [2020-09-25 12:18:12,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:12,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:13,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:13,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 12:18:13,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:18:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-09-25 12:18:13,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:13,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 209 [2020-09-25 12:18:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:18:13,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:13,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:13,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:13,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:13,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:13,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:13,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:13,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:13,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:13,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:13,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:13,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:18:13,267 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 12:18:13,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195761341] [2020-09-25 12:18:13,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:13,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:13,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204262227] [2020-09-25 12:18:13,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:13,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:13,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:13,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:13,270 INFO L87 Difference]: Start difference. First operand 864 states and 1050 transitions. Second operand 3 states. [2020-09-25 12:18:13,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:13,515 INFO L93 Difference]: Finished difference Result 1768 states and 2250 transitions. [2020-09-25 12:18:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:13,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-09-25 12:18:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:13,522 INFO L225 Difference]: With dead ends: 1768 [2020-09-25 12:18:13,522 INFO L226 Difference]: Without dead ends: 1047 [2020-09-25 12:18:13,524 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 12:18:13,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-09-25 12:18:13,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 996. [2020-09-25 12:18:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-09-25 12:18:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1209 transitions. [2020-09-25 12:18:13,552 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1209 transitions. Word has length 225 [2020-09-25 12:18:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:13,553 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1209 transitions. [2020-09-25 12:18:13,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1209 transitions. [2020-09-25 12:18:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 12:18:13,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:13,558 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 12:18:13,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:18:13,558 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:13,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:13,559 INFO L82 PathProgramCache]: Analyzing trace with hash 333657299, now seen corresponding path program 1 times [2020-09-25 12:18:13,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:13,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135499627] [2020-09-25 12:18:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:13,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:13,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:14,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:14,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 12:18:14,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:14,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-09-25 12:18:14,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:14,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:14,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-09-25 12:18:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 12:18:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:14,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:14,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:14,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:14,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:14,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:14,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:14,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:14,143 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 12:18:14,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135499627] [2020-09-25 12:18:14,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:14,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:14,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246853981] [2020-09-25 12:18:14,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:14,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:14,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:14,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:14,146 INFO L87 Difference]: Start difference. First operand 996 states and 1209 transitions. Second operand 3 states. [2020-09-25 12:18:14,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:14,212 INFO L93 Difference]: Finished difference Result 1846 states and 2273 transitions. [2020-09-25 12:18:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:14,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-09-25 12:18:14,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:14,223 INFO L225 Difference]: With dead ends: 1846 [2020-09-25 12:18:14,223 INFO L226 Difference]: Without dead ends: 1277 [2020-09-25 12:18:14,226 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 12:18:14,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-25 12:18:14,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1277. [2020-09-25 12:18:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1277 states. [2020-09-25 12:18:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1560 transitions. [2020-09-25 12:18:14,275 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1560 transitions. Word has length 225 [2020-09-25 12:18:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:14,276 INFO L479 AbstractCegarLoop]: Abstraction has 1277 states and 1560 transitions. [2020-09-25 12:18:14,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1560 transitions. [2020-09-25 12:18:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 12:18:14,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:14,287 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 12:18:14,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:18:14,288 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:14,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1266606843, now seen corresponding path program 1 times [2020-09-25 12:18:14,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:14,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034196523] [2020-09-25 12:18:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:14,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:14,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 12:18:14,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-09-25 12:18:15,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:15,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-09-25 12:18:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:18:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:15,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:15,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:15,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:15,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:15,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:15,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:15,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:15,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:15,204 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 12:18:15,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034196523] [2020-09-25 12:18:15,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:15,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:15,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88253519] [2020-09-25 12:18:15,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:15,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:15,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:15,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:15,207 INFO L87 Difference]: Start difference. First operand 1277 states and 1560 transitions. Second operand 3 states. [2020-09-25 12:18:15,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:15,297 INFO L93 Difference]: Finished difference Result 2408 states and 2975 transitions. [2020-09-25 12:18:15,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:15,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2020-09-25 12:18:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:15,309 INFO L225 Difference]: With dead ends: 2408 [2020-09-25 12:18:15,309 INFO L226 Difference]: Without dead ends: 1558 [2020-09-25 12:18:15,312 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 12:18:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-09-25 12:18:15,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2020-09-25 12:18:15,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-09-25 12:18:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 1912 transitions. [2020-09-25 12:18:15,371 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 1912 transitions. Word has length 249 [2020-09-25 12:18:15,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:15,372 INFO L479 AbstractCegarLoop]: Abstraction has 1558 states and 1912 transitions. [2020-09-25 12:18:15,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 1912 transitions. [2020-09-25 12:18:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-25 12:18:15,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:15,385 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 12:18:15,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:18:15,385 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:15,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:15,386 INFO L82 PathProgramCache]: Analyzing trace with hash 127538036, now seen corresponding path program 1 times [2020-09-25 12:18:15,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:15,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786079942] [2020-09-25 12:18:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 12:18:15,461 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 12:18:15,462 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 12:18:15,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:18:15,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:18:15 BoogieIcfgContainer [2020-09-25 12:18:15,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:18:15,513 INFO L168 Benchmark]: Toolchain (without parser) took 9430.37 ms. Allocated memory was 140.0 MB in the beginning and 380.6 MB in the end (delta: 240.6 MB). Free memory was 102.9 MB in the beginning and 209.4 MB in the end (delta: -106.4 MB). Peak memory consumption was 134.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:15,514 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 12:18:15,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.28 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 178.0 MB in the end (delta: -75.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:15,516 INFO L168 Benchmark]: Boogie Preprocessor took 79.78 ms. Allocated memory is still 202.9 MB. Free memory was 178.0 MB in the beginning and 175.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:15,517 INFO L168 Benchmark]: RCFGBuilder took 925.41 ms. Allocated memory is still 202.9 MB. Free memory was 175.3 MB in the beginning and 111.6 MB in the end (delta: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:15,518 INFO L168 Benchmark]: TraceAbstraction took 7827.98 ms. Allocated memory was 202.9 MB in the beginning and 380.6 MB in the end (delta: 177.7 MB). Free memory was 110.9 MB in the beginning and 209.4 MB in the end (delta: -98.4 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:15,522 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 588.28 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 178.0 MB in the end (delta: -75.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.78 ms. Allocated memory is still 202.9 MB. Free memory was 178.0 MB in the beginning and 175.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 925.41 ms. Allocated memory is still 202.9 MB. Free memory was 175.3 MB in the beginning and 111.6 MB in the end (delta: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7827.98 ms. Allocated memory was 202.9 MB in the beginning and 380.6 MB in the end (delta: 177.7 MB). Free memory was 110.9 MB in the beginning and 209.4 MB in the end (delta: -98.4 MB). Peak memory consumption was 79.3 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: 7.7s, OverallIterations: 8, TraceHistogramMax: 6, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2828 SDtfs, 1892 SDslu, 2845 SDs, 0 SdLazy, 443 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1558occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 104 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 1733 NumberOfCodeBlocks, 1733 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1452 ConstructedInterpolants, 0 QuantifiedInterpolants, 429290 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 197/197 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...