/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 [2020-10-14 10:06:42,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:06:42,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:06:42,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:06:42,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:06:42,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:06:42,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:06:42,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:06:42,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:06:42,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:06:42,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:06:42,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:06:42,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:06:42,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:06:42,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:06:42,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:06:42,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:06:42,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:06:42,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:06:42,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:06:42,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:06:42,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:06:42,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:06:42,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:06:42,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:06:42,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:06:42,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:06:42,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:06:42,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:06:42,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:06:42,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:06:42,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:06:42,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:06:42,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:06:42,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:06:42,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:06:42,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:06:42,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:06:42,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:06:42,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:06:42,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:06:42,975 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 [2020-10-14 10:06:42,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:06:42,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:06:43,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:06:43,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:06:43,001 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:06:43,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:06:43,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:06:43,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:06:43,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:06:43,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:06:43,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:06:43,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:06:43,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:06:43,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:06:43,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:06:43,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:06:43,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:06:43,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:06:43,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:06:43,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:06:43,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:06:43,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:06:43,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:06:43,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:06:43,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:06:43,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:06:43,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:06:43,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:06:43,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:06:43,006 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:06:43,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:06:43,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:06:43,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:06:43,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:06:43,362 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:06:43,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c [2020-10-14 10:06:43,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48ade41e4/285d0a4327644d66acf7a7cc3e9c43b0/FLAG2b960d6ee [2020-10-14 10:06:43,966 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:06:43,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c [2020-10-14 10:06:43,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48ade41e4/285d0a4327644d66acf7a7cc3e9c43b0/FLAG2b960d6ee [2020-10-14 10:06:44,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48ade41e4/285d0a4327644d66acf7a7cc3e9c43b0 [2020-10-14 10:06:44,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:06:44,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:06:44,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:06:44,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:06:44,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:06:44,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:44" (1/1) ... [2020-10-14 10:06:44,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d84853b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44, skipping insertion in model container [2020-10-14 10:06:44,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:44" (1/1) ... [2020-10-14 10:06:44,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:06:44,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:06:44,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:06:44,549 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:06:44,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:06:44,741 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:06:44,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44 WrapperNode [2020-10-14 10:06:44,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:06:44,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:06:44,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:06:44,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:06:44,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44" (1/1) ... [2020-10-14 10:06:44,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44" (1/1) ... [2020-10-14 10:06:44,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44" (1/1) ... [2020-10-14 10:06:44,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44" (1/1) ... [2020-10-14 10:06:44,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44" (1/1) ... [2020-10-14 10:06:44,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44" (1/1) ... [2020-10-14 10:06:44,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44" (1/1) ... [2020-10-14 10:06:44,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:06:44,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:06:44,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:06:44,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:06:44,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44" (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 [2020-10-14 10:06:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:06:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:06:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-14 10:06:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:06:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:06:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:06:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:06:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:06:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-14 10:06:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:06:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:06:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:06:45,023 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:06:45,576 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-14 10:06:45,576 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-14 10:06:45,599 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:06:45,599 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:06:45,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:45 BoogieIcfgContainer [2020-10-14 10:06:45,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:06:45,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:06:45,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:06:45,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:06:45,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:06:44" (1/3) ... [2020-10-14 10:06:45,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6ce4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:45, skipping insertion in model container [2020-10-14 10:06:45,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:44" (2/3) ... [2020-10-14 10:06:45,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6ce4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:45, skipping insertion in model container [2020-10-14 10:06:45,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:45" (3/3) ... [2020-10-14 10:06:45,615 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-2.c [2020-10-14 10:06:45,627 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:06:45,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:06:45,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:06:45,681 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:06:45,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:06:45,682 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:06:45,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:06:45,682 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:06:45,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:06:45,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:06:45,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:06:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2020-10-14 10:06:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 10:06:45,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:45,715 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] [2020-10-14 10:06:45,716 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:45,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:45,721 INFO L82 PathProgramCache]: Analyzing trace with hash 173381458, now seen corresponding path program 1 times [2020-10-14 10:06:45,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:45,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942807701] [2020-10-14 10:06:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:46,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 10:06:46,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:46,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-14 10:06:46,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:46,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:06:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:06:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:06:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:46,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:06:46,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:46,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:46,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:46,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:46,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942807701] [2020-10-14 10:06:46,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:46,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:06:46,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314847301] [2020-10-14 10:06:46,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:06:46,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:46,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:06:46,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:06:46,517 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 3 states. [2020-10-14 10:06:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:46,625 INFO L93 Difference]: Finished difference Result 374 states and 631 transitions. [2020-10-14 10:06:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:06:46,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 10:06:46,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:46,647 INFO L225 Difference]: With dead ends: 374 [2020-10-14 10:06:46,648 INFO L226 Difference]: Without dead ends: 218 [2020-10-14 10:06:46,652 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 [2020-10-14 10:06:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-14 10:06:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-14 10:06:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-14 10:06:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 324 transitions. [2020-10-14 10:06:46,718 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 324 transitions. Word has length 29 [2020-10-14 10:06:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:46,718 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 324 transitions. [2020-10-14 10:06:46,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:06:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 324 transitions. [2020-10-14 10:06:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 10:06:46,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:46,724 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] [2020-10-14 10:06:46,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:06:46,726 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:46,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:46,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1098410427, now seen corresponding path program 1 times [2020-10-14 10:06:46,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:46,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854670555] [2020-10-14 10:06:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:46,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:47,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 10:06:47,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:47,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-14 10:06:47,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:47,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 10:06:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:06:47,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 10:06:47,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:47,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:47,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:06:47,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:47,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:47,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:06:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:06:47,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854670555] [2020-10-14 10:06:47,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:47,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:06:47,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873760214] [2020-10-14 10:06:47,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:06:47,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:47,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:06:47,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:06:47,421 INFO L87 Difference]: Start difference. First operand 218 states and 324 transitions. Second operand 3 states. [2020-10-14 10:06:47,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:47,546 INFO L93 Difference]: Finished difference Result 424 states and 637 transitions. [2020-10-14 10:06:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:06:47,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-10-14 10:06:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:47,557 INFO L225 Difference]: With dead ends: 424 [2020-10-14 10:06:47,557 INFO L226 Difference]: Without dead ends: 320 [2020-10-14 10:06:47,561 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 [2020-10-14 10:06:47,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-14 10:06:47,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2020-10-14 10:06:47,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-14 10:06:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 476 transitions. [2020-10-14 10:06:47,594 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 476 transitions. Word has length 43 [2020-10-14 10:06:47,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:47,594 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 476 transitions. [2020-10-14 10:06:47,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:06:47,595 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 476 transitions. [2020-10-14 10:06:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 10:06:47,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:47,599 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] [2020-10-14 10:06:47,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:06:47,599 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:47,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1578256893, now seen corresponding path program 1 times [2020-10-14 10:06:47,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:47,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376990829] [2020-10-14 10:06:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:47,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:47,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 10:06:47,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:47,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-14 10:06:47,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:47,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 10:06:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 10:06:47,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:48,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:48,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:06:48,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:48,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:48,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 10:06:48,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376990829] [2020-10-14 10:06:48,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:48,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:06:48,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396998168] [2020-10-14 10:06:48,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:06:48,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:48,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:06:48,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:06:48,034 INFO L87 Difference]: Start difference. First operand 320 states and 476 transitions. Second operand 3 states. [2020-10-14 10:06:48,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:48,128 INFO L93 Difference]: Finished difference Result 628 states and 941 transitions. [2020-10-14 10:06:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:06:48,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-10-14 10:06:48,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:48,133 INFO L225 Difference]: With dead ends: 628 [2020-10-14 10:06:48,134 INFO L226 Difference]: Without dead ends: 422 [2020-10-14 10:06:48,138 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 [2020-10-14 10:06:48,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-14 10:06:48,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2020-10-14 10:06:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-14 10:06:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 629 transitions. [2020-10-14 10:06:48,164 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 629 transitions. Word has length 60 [2020-10-14 10:06:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:48,165 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 629 transitions. [2020-10-14 10:06:48,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:06:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 629 transitions. [2020-10-14 10:06:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 10:06:48,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:48,170 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] [2020-10-14 10:06:48,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:06:48,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:48,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:48,171 INFO L82 PathProgramCache]: Analyzing trace with hash -486317571, now seen corresponding path program 1 times [2020-10-14 10:06:48,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:48,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393650239] [2020-10-14 10:06:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:48,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:48,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 10:06:48,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:06:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-10-14 10:06:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:48,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 10:06:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:06:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:49,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:49,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:49,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:06:49,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:06:49,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:49,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 10:06:49,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393650239] [2020-10-14 10:06:49,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:49,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:06:49,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888271855] [2020-10-14 10:06:49,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:06:49,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:49,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:06:49,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:06:49,059 INFO L87 Difference]: Start difference. First operand 422 states and 629 transitions. Second operand 3 states. [2020-10-14 10:06:49,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:49,141 INFO L93 Difference]: Finished difference Result 832 states and 1247 transitions. [2020-10-14 10:06:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:06:49,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-10-14 10:06:49,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:49,147 INFO L225 Difference]: With dead ends: 832 [2020-10-14 10:06:49,147 INFO L226 Difference]: Without dead ends: 524 [2020-10-14 10:06:49,148 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 [2020-10-14 10:06:49,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-10-14 10:06:49,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2020-10-14 10:06:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-14 10:06:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 783 transitions. [2020-10-14 10:06:49,176 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 783 transitions. Word has length 78 [2020-10-14 10:06:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:49,178 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 783 transitions. [2020-10-14 10:06:49,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:06:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 783 transitions. [2020-10-14 10:06:49,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 10:06:49,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:49,186 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] [2020-10-14 10:06:49,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:06:49,187 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:49,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2125269301, now seen corresponding path program 1 times [2020-10-14 10:06:49,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:49,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149463434] [2020-10-14 10:06:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:49,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:49,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 10:06:49,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-14 10:06:49,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:49,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 10:06:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:06:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:49,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:49,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:49,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:06:49,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:49,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:06:49,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:49,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:49,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:49,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 10:06:49,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149463434] [2020-10-14 10:06:49,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:49,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:06:49,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342866408] [2020-10-14 10:06:49,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:06:49,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:49,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:06:49,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:06:49,627 INFO L87 Difference]: Start difference. First operand 524 states and 783 transitions. Second operand 3 states. [2020-10-14 10:06:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:49,930 INFO L93 Difference]: Finished difference Result 1291 states and 1995 transitions. [2020-10-14 10:06:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:06:49,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-10-14 10:06:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:49,938 INFO L225 Difference]: With dead ends: 1291 [2020-10-14 10:06:49,938 INFO L226 Difference]: Without dead ends: 774 [2020-10-14 10:06:49,940 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 [2020-10-14 10:06:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-10-14 10:06:49,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 729. [2020-10-14 10:06:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-14 10:06:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1033 transitions. [2020-10-14 10:06:49,968 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1033 transitions. Word has length 98 [2020-10-14 10:06:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:49,969 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 1033 transitions. [2020-10-14 10:06:49,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:06:49,969 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1033 transitions. [2020-10-14 10:06:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 10:06:49,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:49,972 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] [2020-10-14 10:06:49,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:06:49,972 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:49,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:49,973 INFO L82 PathProgramCache]: Analyzing trace with hash -208123337, now seen corresponding path program 1 times [2020-10-14 10:06:49,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:49,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528568840] [2020-10-14 10:06:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:49,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:50,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 10:06:50,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:06:50,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 10:06:50,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:50,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:50,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:06:50,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 10:06:50,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 10:06:50,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:50,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:50,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:06:50,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:06:50,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:50,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:50,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 10:06:50,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528568840] [2020-10-14 10:06:50,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:50,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:06:50,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27416930] [2020-10-14 10:06:50,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:06:50,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:50,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:06:50,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:06:50,150 INFO L87 Difference]: Start difference. First operand 729 states and 1033 transitions. Second operand 4 states. [2020-10-14 10:06:50,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:50,320 INFO L93 Difference]: Finished difference Result 1449 states and 2054 transitions. [2020-10-14 10:06:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:06:50,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-14 10:06:50,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:50,325 INFO L225 Difference]: With dead ends: 1449 [2020-10-14 10:06:50,325 INFO L226 Difference]: Without dead ends: 732 [2020-10-14 10:06:50,327 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 [2020-10-14 10:06:50,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-10-14 10:06:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-10-14 10:06:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-14 10:06:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1036 transitions. [2020-10-14 10:06:50,347 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1036 transitions. Word has length 98 [2020-10-14 10:06:50,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:50,347 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 1036 transitions. [2020-10-14 10:06:50,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:06:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1036 transitions. [2020-10-14 10:06:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 10:06:50,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:50,350 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] [2020-10-14 10:06:50,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:06:50,351 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:50,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:50,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1076525473, now seen corresponding path program 1 times [2020-10-14 10:06:50,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:50,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430702826] [2020-10-14 10:06:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 10:06:50,377 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 10:06:50,378 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 10:06:50,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:06:50,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 10:06:50 BoogieIcfgContainer [2020-10-14 10:06:50,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 10:06:50,417 INFO L168 Benchmark]: Toolchain (without parser) took 6179.43 ms. Allocated memory was 147.8 MB in the beginning and 278.4 MB in the end (delta: 130.5 MB). Free memory was 103.7 MB in the beginning and 128.7 MB in the end (delta: -24.9 MB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. [2020-10-14 10:06:50,418 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 10:06:50,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.67 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.7 MB in the beginning and 179.5 MB in the end (delta: -75.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-14 10:06:50,420 INFO L168 Benchmark]: Boogie Preprocessor took 54.36 ms. Allocated memory is still 204.5 MB. Free memory was 179.5 MB in the beginning and 177.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-14 10:06:50,421 INFO L168 Benchmark]: RCFGBuilder took 808.58 ms. Allocated memory is still 204.5 MB. Free memory was 177.6 MB in the beginning and 131.1 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2020-10-14 10:06:50,422 INFO L168 Benchmark]: TraceAbstraction took 4807.74 ms. Allocated memory was 204.5 MB in the beginning and 278.4 MB in the end (delta: 73.9 MB). Free memory was 130.2 MB in the beginning and 128.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 75.4 MB. Max. memory is 7.1 GB. [2020-10-14 10:06:50,426 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 503.67 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.7 MB in the beginning and 179.5 MB in the end (delta: -75.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.36 ms. Allocated memory is still 204.5 MB. Free memory was 179.5 MB in the beginning and 177.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 808.58 ms. Allocated memory is still 204.5 MB. Free memory was 177.6 MB in the beginning and 131.1 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4807.74 ms. Allocated memory was 204.5 MB in the beginning and 278.4 MB in the end (delta: 73.9 MB). Free memory was 130.2 MB in the beginning and 128.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 75.4 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: 4.7s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1074 SDtfs, 814 SDslu, 817 SDs, 0 SdLazy, 285 SolverSat, 53 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=732occurred 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, 45 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 517 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 400 ConstructedInterpolants, 0 QuantifiedInterpolants, 45140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 322/322 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...