/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_4.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:33:30,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:33:30,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:33:30,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:33:30,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:33:30,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:33:30,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:33:30,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:33:30,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:33:30,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:33:30,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:33:30,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:33:30,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:33:30,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:33:30,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:33:30,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:33:30,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:33:30,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:33:30,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:33:30,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:33:30,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:33:30,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:33:30,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:33:30,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:33:30,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:33:30,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:33:30,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:33:30,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:33:30,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:33:30,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:33:30,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:33:30,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:33:30,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:33:30,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:33:30,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:33:30,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:33:30,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:33:30,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:33:30,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:33:30,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:33:30,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:33:30,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:33:30,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:33:30,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:33:30,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:33:30,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:33:30,645 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:33:30,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:33:30,645 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:33:30,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:33:30,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:33:30,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:33:30,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:33:30,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:33:30,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:33:30,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:33:30,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:33:30,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:33:30,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:33:30,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:33:30,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:33:30,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:33:30,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:33:30,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:30,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:33:30,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:33:30,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:33:30,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:33:30,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:33:30,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:33:30,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:33:30,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:33:31,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:33:31,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:33:31,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:33:31,123 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:33:31,125 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:33:31,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_4.cil-2.c [2020-09-25 14:33:31,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c802e25d3/5d1b89fdaf134f22b08fae928afc4268/FLAG08be6df20 [2020-09-25 14:33:31,835 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:33:31,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_clnt_4.cil-2.c [2020-09-25 14:33:31,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c802e25d3/5d1b89fdaf134f22b08fae928afc4268/FLAG08be6df20 [2020-09-25 14:33:32,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c802e25d3/5d1b89fdaf134f22b08fae928afc4268 [2020-09-25 14:33:32,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:33:32,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:33:32,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:32,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:33:32,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:33:32,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:32" (1/1) ... [2020-09-25 14:33:32,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbadd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32, skipping insertion in model container [2020-09-25 14:33:32,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:32" (1/1) ... [2020-09-25 14:33:32,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:33:32,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:33:32,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:32,578 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:33:32,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:32,727 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:33:32,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32 WrapperNode [2020-09-25 14:33:32,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:32,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:33:32,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:33:32,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:33:32,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32" (1/1) ... [2020-09-25 14:33:32,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32" (1/1) ... [2020-09-25 14:33:32,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32" (1/1) ... [2020-09-25 14:33:32,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32" (1/1) ... [2020-09-25 14:33:32,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32" (1/1) ... [2020-09-25 14:33:32,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32" (1/1) ... [2020-09-25 14:33:32,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32" (1/1) ... [2020-09-25 14:33:32,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:33:32,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:33:32,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:33:32,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:33:32,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:33:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:33:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-09-25 14:33:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:33:32,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:33:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:33:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:33:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 14:33:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-09-25 14:33:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:33:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:33:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:33:33,059 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:33,771 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-09-25 14:33:33,772 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-09-25 14:33:33,802 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:33:33,802 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:33:33,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:33 BoogieIcfgContainer [2020-09-25 14:33:33,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:33:33,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:33:33,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:33:33,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:33:33,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:33:32" (1/3) ... [2020-09-25 14:33:33,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582d4a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:33, skipping insertion in model container [2020-09-25 14:33:33,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:32" (2/3) ... [2020-09-25 14:33:33,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582d4a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:33, skipping insertion in model container [2020-09-25 14:33:33,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:33" (3/3) ... [2020-09-25 14:33:33,820 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-2.c [2020-09-25 14:33:33,832 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:33:33,843 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:33:33,866 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:33:33,901 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:33:33,901 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:33:33,901 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:33:33,901 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:33:33,902 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:33:33,902 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:33:33,902 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:33:33,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:33:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states. [2020-09-25 14:33:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 14:33:33,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:33,952 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:33,953 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:33,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:33,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1739904560, now seen corresponding path program 1 times [2020-09-25 14:33:33,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:33,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685054501] [2020-09-25 14:33:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:35,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:35,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 14:33:35,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:35,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1099 [2020-09-25 14:33:35,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:35,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:33:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 14:33:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:33:35,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:35,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:35,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:35,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:35,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:35,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:35,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:35,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-09-25 14:33:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:35,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685054501] [2020-09-25 14:33:35,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:35,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:33:35,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113958668] [2020-09-25 14:33:35,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:33:35,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:35,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:33:35,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:33:35,592 INFO L87 Difference]: Start difference. First operand 391 states. Second operand 6 states. [2020-09-25 14:33:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:35,885 INFO L93 Difference]: Finished difference Result 635 states and 810 transitions. [2020-09-25 14:33:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:33:35,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-25 14:33:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:35,921 INFO L225 Difference]: With dead ends: 635 [2020-09-25 14:33:35,921 INFO L226 Difference]: Without dead ends: 352 [2020-09-25 14:33:35,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:33:35,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-09-25 14:33:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2020-09-25 14:33:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-09-25 14:33:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 409 transitions. [2020-09-25 14:33:36,050 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 409 transitions. Word has length 167 [2020-09-25 14:33:36,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:36,054 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 409 transitions. [2020-09-25 14:33:36,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:33:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 409 transitions. [2020-09-25 14:33:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 14:33:36,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:36,068 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:36,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:33:36,069 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:36,070 INFO L82 PathProgramCache]: Analyzing trace with hash -5837123, now seen corresponding path program 1 times [2020-09-25 14:33:36,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:36,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476479086] [2020-09-25 14:33:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:36,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 14:33:36,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-09-25 14:33:36,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:36,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-09-25 14:33:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:33:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:36,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:36,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:36,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:36,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:36,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:36,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:36,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:36,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:36,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:33:36,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476479086] [2020-09-25 14:33:36,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:36,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:36,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388049101] [2020-09-25 14:33:36,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:36,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:36,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:36,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:36,781 INFO L87 Difference]: Start difference. First operand 352 states and 409 transitions. Second operand 3 states. [2020-09-25 14:33:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:36,846 INFO L93 Difference]: Finished difference Result 745 states and 909 transitions. [2020-09-25 14:33:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:36,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2020-09-25 14:33:36,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:36,851 INFO L225 Difference]: With dead ends: 745 [2020-09-25 14:33:36,851 INFO L226 Difference]: Without dead ends: 545 [2020-09-25 14:33:36,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-09-25 14:33:36,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2020-09-25 14:33:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 14:33:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 651 transitions. [2020-09-25 14:33:36,875 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 651 transitions. Word has length 190 [2020-09-25 14:33:36,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:36,876 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 651 transitions. [2020-09-25 14:33:36,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 651 transitions. [2020-09-25 14:33:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 14:33:36,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:36,879 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:36,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:33:36,880 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:36,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:36,880 INFO L82 PathProgramCache]: Analyzing trace with hash -525577979, now seen corresponding path program 1 times [2020-09-25 14:33:36,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:36,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482030880] [2020-09-25 14:33:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:36,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:37,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:37,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:37,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 14:33:37,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:37,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-25 14:33:37,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:37,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-09-25 14:33:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:33:37,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:37,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:37,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:37,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:37,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:37,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:37,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:33:37,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482030880] [2020-09-25 14:33:37,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:37,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:37,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613295578] [2020-09-25 14:33:37,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:37,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:37,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:37,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:37,476 INFO L87 Difference]: Start difference. First operand 545 states and 651 transitions. Second operand 3 states. [2020-09-25 14:33:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:37,541 INFO L93 Difference]: Finished difference Result 938 states and 1151 transitions. [2020-09-25 14:33:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:37,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-09-25 14:33:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:37,546 INFO L225 Difference]: With dead ends: 938 [2020-09-25 14:33:37,547 INFO L226 Difference]: Without dead ends: 738 [2020-09-25 14:33:37,548 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 [2020-09-25 14:33:37,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2020-09-25 14:33:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2020-09-25 14:33:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 14:33:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 894 transitions. [2020-09-25 14:33:37,570 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 894 transitions. Word has length 210 [2020-09-25 14:33:37,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:37,571 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 894 transitions. [2020-09-25 14:33:37,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 894 transitions. [2020-09-25 14:33:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 14:33:37,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:37,576 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:37,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:33:37,576 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:37,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1852648600, now seen corresponding path program 1 times [2020-09-25 14:33:37,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:37,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058842804] [2020-09-25 14:33:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:37,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:37,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:37,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 14:33:37,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:33:37,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-25 14:33:37,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:37,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-09-25 14:33:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:33:37,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:38,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:38,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:38,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:38,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:38,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:38,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:38,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 14:33:38,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058842804] [2020-09-25 14:33:38,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:38,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:38,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653893337] [2020-09-25 14:33:38,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:38,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:38,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:38,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:38,077 INFO L87 Difference]: Start difference. First operand 738 states and 894 transitions. Second operand 3 states. [2020-09-25 14:33:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:38,404 INFO L93 Difference]: Finished difference Result 1510 states and 1932 transitions. [2020-09-25 14:33:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:38,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2020-09-25 14:33:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:38,413 INFO L225 Difference]: With dead ends: 1510 [2020-09-25 14:33:38,413 INFO L226 Difference]: Without dead ends: 921 [2020-09-25 14:33:38,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:38,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2020-09-25 14:33:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 870. [2020-09-25 14:33:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-09-25 14:33:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1053 transitions. [2020-09-25 14:33:38,447 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1053 transitions. Word has length 231 [2020-09-25 14:33:38,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:38,448 INFO L479 AbstractCegarLoop]: Abstraction has 870 states and 1053 transitions. [2020-09-25 14:33:38,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1053 transitions. [2020-09-25 14:33:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 14:33:38,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:38,457 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:38,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:33:38,457 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:38,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:38,458 INFO L82 PathProgramCache]: Analyzing trace with hash 598717384, now seen corresponding path program 1 times [2020-09-25 14:33:38,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:38,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584361726] [2020-09-25 14:33:38,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:38,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:38,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:39,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 14:33:39,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-09-25 14:33:39,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:39,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-09-25 14:33:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:33:39,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:39,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:39,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:39,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:39,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:39,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 14:33:39,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584361726] [2020-09-25 14:33:39,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:39,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:39,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990099329] [2020-09-25 14:33:39,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:39,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:39,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:39,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:39,241 INFO L87 Difference]: Start difference. First operand 870 states and 1053 transitions. Second operand 3 states. [2020-09-25 14:33:39,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:39,328 INFO L93 Difference]: Finished difference Result 1588 states and 1955 transitions. [2020-09-25 14:33:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:39,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2020-09-25 14:33:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:39,338 INFO L225 Difference]: With dead ends: 1588 [2020-09-25 14:33:39,338 INFO L226 Difference]: Without dead ends: 1107 [2020-09-25 14:33:39,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:39,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2020-09-25 14:33:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1107. [2020-09-25 14:33:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1107 states. [2020-09-25 14:33:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1350 transitions. [2020-09-25 14:33:39,376 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1350 transitions. Word has length 231 [2020-09-25 14:33:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:39,376 INFO L479 AbstractCegarLoop]: Abstraction has 1107 states and 1350 transitions. [2020-09-25 14:33:39,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:39,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1350 transitions. [2020-09-25 14:33:39,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-25 14:33:39,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:39,387 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:39,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:33:39,387 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:39,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:39,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2112197708, now seen corresponding path program 1 times [2020-09-25 14:33:39,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:39,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893760762] [2020-09-25 14:33:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:40,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:40,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-25 14:33:40,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:40,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-25 14:33:40,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:40,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-09-25 14:33:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:33:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:40,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:40,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:40,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:40,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:40,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:40,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 14:33:40,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893760762] [2020-09-25 14:33:40,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:40,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:40,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310196503] [2020-09-25 14:33:40,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:40,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:40,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:40,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:40,167 INFO L87 Difference]: Start difference. First operand 1107 states and 1350 transitions. Second operand 3 states. [2020-09-25 14:33:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:40,450 INFO L93 Difference]: Finished difference Result 2335 states and 2970 transitions. [2020-09-25 14:33:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:40,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2020-09-25 14:33:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:40,459 INFO L225 Difference]: With dead ends: 2335 [2020-09-25 14:33:40,460 INFO L226 Difference]: Without dead ends: 1380 [2020-09-25 14:33:40,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-09-25 14:33:40,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1283. [2020-09-25 14:33:40,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-09-25 14:33:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1582 transitions. [2020-09-25 14:33:40,509 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1582 transitions. Word has length 255 [2020-09-25 14:33:40,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:40,510 INFO L479 AbstractCegarLoop]: Abstraction has 1283 states and 1582 transitions. [2020-09-25 14:33:40,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1582 transitions. [2020-09-25 14:33:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-25 14:33:40,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:40,517 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:40,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:33:40,518 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:40,519 INFO L82 PathProgramCache]: Analyzing trace with hash -814233215, now seen corresponding path program 1 times [2020-09-25 14:33:40,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:40,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057937245] [2020-09-25 14:33:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:40,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:41,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:41,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:42,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:42,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-25 14:33:42,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:33:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2382 [2020-09-25 14:33:42,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:42,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 237 [2020-09-25 14:33:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:33:42,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:43,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:43,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:43,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:43,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:43,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 14:33:43,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057937245] [2020-09-25 14:33:43,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:43,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:43,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494557490] [2020-09-25 14:33:43,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:43,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:43,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:43,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:43,093 INFO L87 Difference]: Start difference. First operand 1283 states and 1582 transitions. Second operand 3 states. [2020-09-25 14:33:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:43,169 INFO L93 Difference]: Finished difference Result 2414 states and 3013 transitions. [2020-09-25 14:33:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:43,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 262 [2020-09-25 14:33:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:43,180 INFO L225 Difference]: With dead ends: 2414 [2020-09-25 14:33:43,181 INFO L226 Difference]: Without dead ends: 1564 [2020-09-25 14:33:43,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:43,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2020-09-25 14:33:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1564. [2020-09-25 14:33:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-09-25 14:33:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1938 transitions. [2020-09-25 14:33:43,237 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1938 transitions. Word has length 262 [2020-09-25 14:33:43,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:43,238 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 1938 transitions. [2020-09-25 14:33:43,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1938 transitions. [2020-09-25 14:33:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-09-25 14:33:43,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:43,245 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:43,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:33:43,245 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:43,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:43,246 INFO L82 PathProgramCache]: Analyzing trace with hash -802173269, now seen corresponding path program 1 times [2020-09-25 14:33:43,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:43,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471170475] [2020-09-25 14:33:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:33:43,306 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:33:43,306 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:33:43,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:33:43,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:33:43 BoogieIcfgContainer [2020-09-25 14:33:43,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:33:43,376 INFO L168 Benchmark]: Toolchain (without parser) took 11219.05 ms. Allocated memory was 109.6 MB in the beginning and 365.4 MB in the end (delta: 255.9 MB). Free memory was 74.4 MB in the beginning and 276.5 MB in the end (delta: -202.1 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,382 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 109.6 MB. Free memory was 92.3 MB in the beginning and 92.2 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.13 ms. Allocated memory was 109.6 MB in the beginning and 169.9 MB in the end (delta: 60.3 MB). Free memory was 73.9 MB in the beginning and 152.4 MB in the end (delta: -78.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,384 INFO L168 Benchmark]: Boogie Preprocessor took 60.65 ms. Allocated memory is still 169.9 MB. Free memory was 152.4 MB in the beginning and 150.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,385 INFO L168 Benchmark]: RCFGBuilder took 1021.43 ms. Allocated memory was 169.9 MB in the beginning and 185.6 MB in the end (delta: 15.7 MB). Free memory was 149.6 MB in the beginning and 158.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,388 INFO L168 Benchmark]: TraceAbstraction took 9558.57 ms. Allocated memory was 185.6 MB in the beginning and 365.4 MB in the end (delta: 179.8 MB). Free memory was 157.6 MB in the beginning and 276.5 MB in the end (delta: -119.0 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:43,400 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 109.6 MB. Free memory was 92.3 MB in the beginning and 92.2 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 569.13 ms. Allocated memory was 109.6 MB in the beginning and 169.9 MB in the end (delta: 60.3 MB). Free memory was 73.9 MB in the beginning and 152.4 MB in the end (delta: -78.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.65 ms. Allocated memory is still 169.9 MB. Free memory was 152.4 MB in the beginning and 150.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1021.43 ms. Allocated memory was 169.9 MB in the beginning and 185.6 MB in the end (delta: 15.7 MB). Free memory was 149.6 MB in the beginning and 158.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9558.57 ms. Allocated memory was 185.6 MB in the beginning and 365.4 MB in the end (delta: 179.8 MB). Free memory was 157.6 MB in the beginning and 276.5 MB in the end (delta: -119.0 MB). Peak memory consumption was 60.9 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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [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 [L253] COND FALSE !(ret <= 0) [L256] s__state = 4384 [L257] s__init_num = 0 [L258] 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 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 1 [L266] blastFlag = 2 [L268] COND FALSE !(ret <= 0) [L271] COND FALSE !(\read(s__hit)) [L274] s__state = 4400 [L276] 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 [L281] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L282] COND FALSE !(__cil_tmp56 + 256UL) [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 2 [L287] 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, 391 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.4s, OverallIterations: 8, TraceHistogramMax: 6, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2863 SDtfs, 1923 SDslu, 2872 SDs, 0 SdLazy, 441 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1564occurred 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: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 148 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 1826 NumberOfCodeBlocks, 1826 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1539 ConstructedInterpolants, 0 QuantifiedInterpolants, 472627 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 261/261 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...