/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:43:32,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:43:32,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:43:32,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:43:32,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:43:32,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:43:32,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:43:32,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:43:32,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:43:32,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:43:32,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:43:32,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:43:32,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:43:32,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:43:32,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:43:32,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:43:32,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:43:32,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:43:32,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:43:32,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:43:32,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:43:32,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:43:32,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:43:32,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:43:32,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:43:32,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:43:32,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:43:32,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:43:32,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:43:32,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:43:32,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:43:32,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:43:32,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:43:32,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:43:32,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:43:32,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:43:32,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:43:32,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:43:32,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:43:32,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:43:32,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:43:32,329 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 [2020-10-15 04:43:32,352 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:43:32,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:43:32,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:43:32,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:43:32,355 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:43:32,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:43:32,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:43:32,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:43:32,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:43:32,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:43:32,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:43:32,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:43:32,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:43:32,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:43:32,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:43:32,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:43:32,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:43:32,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:43:32,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:43:32,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:43:32,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:43:32,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:43:32,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:43:32,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:43:32,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:43:32,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:43:32,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:43:32,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:43:32,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:43:32,360 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:43:32,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:43:32,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:43:32,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:43:32,666 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:43:32,667 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:43:32,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c [2020-10-15 04:43:32,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09af4e350/2870d0ff69844ff2bae4cdaa9689e8b2/FLAG5a87bc45f [2020-10-15 04:43:33,099 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:43:33,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c [2020-10-15 04:43:33,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09af4e350/2870d0ff69844ff2bae4cdaa9689e8b2/FLAG5a87bc45f [2020-10-15 04:43:33,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09af4e350/2870d0ff69844ff2bae4cdaa9689e8b2 [2020-10-15 04:43:33,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:43:33,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:43:33,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:43:33,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:43:33,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:43:33,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:43:33" (1/1) ... [2020-10-15 04:43:33,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235e1467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33, skipping insertion in model container [2020-10-15 04:43:33,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:43:33" (1/1) ... [2020-10-15 04:43:33,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:43:33,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:43:33,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:43:33,741 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:43:33,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:43:33,921 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:43:33,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33 WrapperNode [2020-10-15 04:43:33,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:43:33,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:43:33,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:43:33,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:43:33,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33" (1/1) ... [2020-10-15 04:43:33,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33" (1/1) ... [2020-10-15 04:43:33,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33" (1/1) ... [2020-10-15 04:43:33,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33" (1/1) ... [2020-10-15 04:43:33,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33" (1/1) ... [2020-10-15 04:43:34,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33" (1/1) ... [2020-10-15 04:43:34,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33" (1/1) ... [2020-10-15 04:43:34,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:43:34,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:43:34,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:43:34,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:43:34,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33" (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 [2020-10-15 04:43:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:43:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:43:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-15 04:43:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:43:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:43:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:43:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:43:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:43:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-15 04:43:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:43:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:43:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:43:34,314 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:43:34,841 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-15 04:43:34,841 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-15 04:43:34,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:43:34,862 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:43:34,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:43:34 BoogieIcfgContainer [2020-10-15 04:43:34,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:43:34,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:43:34,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:43:34,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:43:34,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:43:33" (1/3) ... [2020-10-15 04:43:34,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f16995a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:43:34, skipping insertion in model container [2020-10-15 04:43:34,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:43:33" (2/3) ... [2020-10-15 04:43:34,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f16995a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:43:34, skipping insertion in model container [2020-10-15 04:43:34,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:43:34" (3/3) ... [2020-10-15 04:43:34,879 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-2.c [2020-10-15 04:43:34,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:43:34,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:43:34,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:43:34,987 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:43:34,988 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:43:34,990 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:43:34,990 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:43:34,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:43:34,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:43:34,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:43:34,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:43:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2020-10-15 04:43:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 04:43:35,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:35,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:35,049 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:35,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:35,056 INFO L82 PathProgramCache]: Analyzing trace with hash 173381458, now seen corresponding path program 1 times [2020-10-15 04:43:35,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:35,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985292872] [2020-10-15 04:43:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:35,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:35,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:35,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:35,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:35,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 04:43:35,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:43:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-15 04:43:35,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:35,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:35,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 04:43:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 04:43:35,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:43:35,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:35,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:35,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:35,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:43:35,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:35,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:35,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:35,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:35,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985292872] [2020-10-15 04:43:35,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:35,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:43:35,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151641691] [2020-10-15 04:43:35,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:43:35,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:35,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:43:35,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:43:35,835 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 3 states. [2020-10-15 04:43:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:35,949 INFO L93 Difference]: Finished difference Result 374 states and 631 transitions. [2020-10-15 04:43:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:43:35,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-15 04:43:35,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:35,965 INFO L225 Difference]: With dead ends: 374 [2020-10-15 04:43:35,965 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 04:43:35,973 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 [2020-10-15 04:43:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 04:43:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-15 04:43:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 04:43:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 324 transitions. [2020-10-15 04:43:36,031 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 324 transitions. Word has length 29 [2020-10-15 04:43:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:36,032 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 324 transitions. [2020-10-15 04:43:36,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:43:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 324 transitions. [2020-10-15 04:43:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 04:43:36,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:36,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:36,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:43:36,036 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:36,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1098410427, now seen corresponding path program 1 times [2020-10-15 04:43:36,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:36,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762839805] [2020-10-15 04:43:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:36,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-15 04:43:36,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:36,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-15 04:43:36,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:36,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 04:43:36,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 04:43:36,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:43:36,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:36,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:36,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:43:36,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:36,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:36,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:36,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:36,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762839805] [2020-10-15 04:43:36,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:36,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:43:36,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008475834] [2020-10-15 04:43:36,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:43:36,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:36,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:43:36,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:43:36,528 INFO L87 Difference]: Start difference. First operand 218 states and 324 transitions. Second operand 3 states. [2020-10-15 04:43:36,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:36,609 INFO L93 Difference]: Finished difference Result 424 states and 637 transitions. [2020-10-15 04:43:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:43:36,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-10-15 04:43:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:36,613 INFO L225 Difference]: With dead ends: 424 [2020-10-15 04:43:36,613 INFO L226 Difference]: Without dead ends: 320 [2020-10-15 04:43:36,615 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 [2020-10-15 04:43:36,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-15 04:43:36,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2020-10-15 04:43:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-15 04:43:36,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 476 transitions. [2020-10-15 04:43:36,642 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 476 transitions. Word has length 43 [2020-10-15 04:43:36,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:36,642 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 476 transitions. [2020-10-15 04:43:36,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:43:36,642 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 476 transitions. [2020-10-15 04:43:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 04:43:36,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:36,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:36,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:43:36,647 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:36,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:36,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1578256893, now seen corresponding path program 1 times [2020-10-15 04:43:36,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:36,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894285174] [2020-10-15 04:43:36,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:36,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 04:43:36,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:36,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-15 04:43:36,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:36,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 04:43:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 04:43:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:36,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:36,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:43:36,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:36,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:36,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:36,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:36,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:36,930 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:43:36,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894285174] [2020-10-15 04:43:36,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:36,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:43:36,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843735852] [2020-10-15 04:43:36,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:43:36,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:36,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:43:36,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:43:36,933 INFO L87 Difference]: Start difference. First operand 320 states and 476 transitions. Second operand 3 states. [2020-10-15 04:43:37,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:37,149 INFO L93 Difference]: Finished difference Result 781 states and 1203 transitions. [2020-10-15 04:43:37,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:43:37,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-10-15 04:43:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:37,154 INFO L225 Difference]: With dead ends: 781 [2020-10-15 04:43:37,154 INFO L226 Difference]: Without dead ends: 470 [2020-10-15 04:43:37,156 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 [2020-10-15 04:43:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-15 04:43:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 443. [2020-10-15 04:43:37,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-10-15 04:43:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 626 transitions. [2020-10-15 04:43:37,211 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 626 transitions. Word has length 60 [2020-10-15 04:43:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:37,211 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 626 transitions. [2020-10-15 04:43:37,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:43:37,212 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 626 transitions. [2020-10-15 04:43:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 04:43:37,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:37,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:37,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:43:37,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:37,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:37,217 INFO L82 PathProgramCache]: Analyzing trace with hash -227181441, now seen corresponding path program 1 times [2020-10-15 04:43:37,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:37,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545025458] [2020-10-15 04:43:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:37,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 04:43:37,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-15 04:43:37,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:37,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 04:43:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:43:37,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:37,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:37,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:43:37,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:37,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:37,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:37,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:37,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:43:37,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545025458] [2020-10-15 04:43:37,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:37,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:43:37,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293163323] [2020-10-15 04:43:37,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:43:37,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:37,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:43:37,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:43:37,519 INFO L87 Difference]: Start difference. First operand 443 states and 626 transitions. Second operand 3 states. [2020-10-15 04:43:37,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:37,563 INFO L93 Difference]: Finished difference Result 874 states and 1241 transitions. [2020-10-15 04:43:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:43:37,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-10-15 04:43:37,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:37,568 INFO L225 Difference]: With dead ends: 874 [2020-10-15 04:43:37,568 INFO L226 Difference]: Without dead ends: 586 [2020-10-15 04:43:37,569 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 [2020-10-15 04:43:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-15 04:43:37,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2020-10-15 04:43:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-10-15 04:43:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 829 transitions. [2020-10-15 04:43:37,588 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 829 transitions. Word has length 60 [2020-10-15 04:43:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:37,589 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 829 transitions. [2020-10-15 04:43:37,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:43:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 829 transitions. [2020-10-15 04:43:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:43:37,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:37,594 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:37,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:43:37,594 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:37,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:37,594 INFO L82 PathProgramCache]: Analyzing trace with hash -62670849, now seen corresponding path program 1 times [2020-10-15 04:43:37,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:37,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730275684] [2020-10-15 04:43:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:37,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:37,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:37,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:43:37,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-15 04:43:37,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:37,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-15 04:43:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 04:43:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:38,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:38,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:38,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:38,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:43:38,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:38,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:38,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:38,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-15 04:43:38,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730275684] [2020-10-15 04:43:38,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:38,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:43:38,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039514521] [2020-10-15 04:43:38,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:43:38,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:38,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:43:38,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:43:38,060 INFO L87 Difference]: Start difference. First operand 586 states and 829 transitions. Second operand 3 states. [2020-10-15 04:43:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:38,270 INFO L93 Difference]: Finished difference Result 1376 states and 2011 transitions. [2020-10-15 04:43:38,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:43:38,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-10-15 04:43:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:38,280 INFO L225 Difference]: With dead ends: 1376 [2020-10-15 04:43:38,280 INFO L226 Difference]: Without dead ends: 802 [2020-10-15 04:43:38,282 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 [2020-10-15 04:43:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-10-15 04:43:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 750. [2020-10-15 04:43:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2020-10-15 04:43:38,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1049 transitions. [2020-10-15 04:43:38,308 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1049 transitions. Word has length 78 [2020-10-15 04:43:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:38,309 INFO L479 AbstractCegarLoop]: Abstraction has 750 states and 1049 transitions. [2020-10-15 04:43:38,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:43:38,309 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1049 transitions. [2020-10-15 04:43:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 04:43:38,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:38,312 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:38,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:43:38,312 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:38,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:38,313 INFO L82 PathProgramCache]: Analyzing trace with hash -208123337, now seen corresponding path program 1 times [2020-10-15 04:43:38,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:38,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019200903] [2020-10-15 04:43:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:38,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:38,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 04:43:38,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:43:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-15 04:43:38,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:38,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 04:43:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 04:43:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:38,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:38,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:38,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:43:38,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:43:38,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:38,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-15 04:43:38,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019200903] [2020-10-15 04:43:38,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:38,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:38,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934314265] [2020-10-15 04:43:38,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:38,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:38,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:38,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:38,537 INFO L87 Difference]: Start difference. First operand 750 states and 1049 transitions. Second operand 4 states. [2020-10-15 04:43:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:38,673 INFO L93 Difference]: Finished difference Result 1491 states and 2086 transitions. [2020-10-15 04:43:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:38,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-15 04:43:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:38,678 INFO L225 Difference]: With dead ends: 1491 [2020-10-15 04:43:38,678 INFO L226 Difference]: Without dead ends: 753 [2020-10-15 04:43:38,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:38,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-10-15 04:43:38,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2020-10-15 04:43:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-15 04:43:38,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1052 transitions. [2020-10-15 04:43:38,700 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1052 transitions. Word has length 98 [2020-10-15 04:43:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:38,700 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 1052 transitions. [2020-10-15 04:43:38,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1052 transitions. [2020-10-15 04:43:38,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 04:43:38,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:38,703 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] [2020-10-15 04:43:38,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:43:38,703 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:38,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:38,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1076525473, now seen corresponding path program 1 times [2020-10-15 04:43:38,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:38,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291533875] [2020-10-15 04:43:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 04:43:38,729 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 04:43:38,729 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 04:43:38,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:43:38,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:43:38 BoogieIcfgContainer [2020-10-15 04:43:38,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 04:43:38,766 INFO L168 Benchmark]: Toolchain (without parser) took 5298.55 ms. Allocated memory was 147.3 MB in the beginning and 281.0 MB in the end (delta: 133.7 MB). Free memory was 103.7 MB in the beginning and 185.1 MB in the end (delta: -81.4 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-10-15 04:43:38,767 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-15 04:43:38,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.57 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 103.3 MB in the beginning and 182.0 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-10-15 04:43:38,769 INFO L168 Benchmark]: Boogie Preprocessor took 107.06 ms. Allocated memory is still 205.5 MB. Free memory was 182.0 MB in the beginning and 180.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-15 04:43:38,770 INFO L168 Benchmark]: RCFGBuilder took 839.42 ms. Allocated memory is still 205.5 MB. Free memory was 180.1 MB in the beginning and 132.7 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2020-10-15 04:43:38,771 INFO L168 Benchmark]: TraceAbstraction took 3893.00 ms. Allocated memory was 205.5 MB in the beginning and 281.0 MB in the end (delta: 75.5 MB). Free memory was 131.7 MB in the beginning and 185.1 MB in the end (delta: -53.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-15 04:43:38,775 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 453.57 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 103.3 MB in the beginning and 182.0 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.06 ms. Allocated memory is still 205.5 MB. Free memory was 182.0 MB in the beginning and 180.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 839.42 ms. Allocated memory is still 205.5 MB. Free memory was 180.1 MB in the beginning and 132.7 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3893.00 ms. Allocated memory was 205.5 MB in the beginning and 281.0 MB in the end (delta: 75.5 MB). Free memory was 131.7 MB in the beginning and 185.1 MB in the end (delta: -53.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L548] int s ; [L552] s = 12292 [L553] CALL ssl3_connect(12292) [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] 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 ; [L76] s__state = initial_state [L77] blastFlag = 0 [L78] tmp = __VERIFIER_nondet_int() [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] tmp___0 = 0 [L83] COND TRUE s__info_callback != 0 [L84] cb = s__info_callback [L90] s__in_handshake ++ [L91] COND FALSE !(tmp___1 - 12288) [L97] COND TRUE 1 [L99] state = s__state [L100] COND TRUE s__state == 12292 [L202] s__new_session = 1 [L203] s__state = 4096 [L204] s__ctx__stats__sess_connect_renegotiate ++ [L209] s__server = 0 [L210] COND TRUE cb != 0 [L214] __cil_tmp55 = s__version - 65280 [L215] COND FALSE !(__cil_tmp55 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L233] COND FALSE !(! tmp___4) [L237] COND FALSE !(! tmp___5) [L241] s__state = 4368 [L242] s__ctx__stats__sess_connect ++ [L243] s__init_num = 0 [L515] COND FALSE !(! s__s3__tmp__reuse_message) [L532] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 4096) [L109] COND FALSE !(s__state == 20480) [L112] COND FALSE !(s__state == 4099) [L115] COND TRUE s__state == 4368 [L247] s__shutdown = 0 [L248] ret = __VERIFIER_nondet_int() [L249] COND TRUE blastFlag == 0 [L250] blastFlag = 1 [L252] COND FALSE !(ret <= 0) [L255] s__state = 4384 [L256] s__init_num = 0 [L257] COND TRUE s__bbio != s__wbio [L515] COND FALSE !(! s__s3__tmp__reuse_message) [L532] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 4096) [L109] COND FALSE !(s__state == 20480) [L112] COND FALSE !(s__state == 4099) [L115] COND FALSE !(s__state == 4368) [L118] COND FALSE !(s__state == 4369) [L121] COND TRUE s__state == 4384 [L263] ret = __VERIFIER_nondet_int() [L264] COND TRUE blastFlag == 1 [L265] blastFlag = 2 [L267] COND FALSE !(ret <= 0) [L270] COND FALSE !(\read(s__hit)) [L273] s__state = 4400 [L275] s__init_num = 0 [L515] COND FALSE !(! s__s3__tmp__reuse_message) [L532] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 4096) [L109] COND FALSE !(s__state == 20480) [L112] COND FALSE !(s__state == 4099) [L115] COND FALSE !(s__state == 4368) [L118] COND FALSE !(s__state == 4369) [L121] COND FALSE !(s__state == 4384) [L124] COND FALSE !(s__state == 4385) [L127] COND TRUE s__state == 4400 [L279] COND FALSE !(s__s3__tmp__new_cipher__algorithms - 256) [L282] ret = __VERIFIER_nondet_int() [L283] COND TRUE blastFlag == 2 [L284] blastFlag = 3 [L286] COND FALSE !(ret <= 0) [L290] s__state = 4416 [L291] s__init_num = 0 [L515] COND FALSE !(! s__s3__tmp__reuse_message) [L532] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 4096) [L109] COND FALSE !(s__state == 20480) [L112] COND FALSE !(s__state == 4099) [L115] COND FALSE !(s__state == 4368) [L118] COND FALSE !(s__state == 4369) [L121] COND FALSE !(s__state == 4384) [L124] COND FALSE !(s__state == 4385) [L127] COND FALSE !(s__state == 4400) [L130] COND FALSE !(s__state == 4401) [L133] COND TRUE s__state == 4416 [L295] ret = __VERIFIER_nondet_int() [L296] COND TRUE blastFlag == 3 [L297] blastFlag = 4 [L299] COND FALSE !(ret <= 0) [L302] s__state = 4432 [L303] s__init_num = 0 [L304] COND FALSE !(! tmp___6) [L515] COND FALSE !(! s__s3__tmp__reuse_message) [L532] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 4096) [L109] COND FALSE !(s__state == 20480) [L112] COND FALSE !(s__state == 4099) [L115] COND FALSE !(s__state == 4368) [L118] COND FALSE !(s__state == 4369) [L121] COND FALSE !(s__state == 4384) [L124] COND FALSE !(s__state == 4385) [L127] COND FALSE !(s__state == 4400) [L130] COND FALSE !(s__state == 4401) [L133] COND FALSE !(s__state == 4416) [L136] COND FALSE !(s__state == 4417) [L139] COND TRUE s__state == 4432 [L311] ret = __VERIFIER_nondet_int() [L312] COND TRUE blastFlag == 4 [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 135 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1085 SDtfs, 736 SDslu, 730 SDs, 0 SdLazy, 379 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=753occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 79 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 362 ConstructedInterpolants, 0 QuantifiedInterpolants, 37928 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 238/238 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...