/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:22:06,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:22:06,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:22:06,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:22:06,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:22:06,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:22:06,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:22:06,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:22:06,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:22:06,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:22:06,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:22:06,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:22:06,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:22:06,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:22:06,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:22:06,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:22:06,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:22:07,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:22:07,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:22:07,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:22:07,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:22:07,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:22:07,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:22:07,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:22:07,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:22:07,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:22:07,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:22:07,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:22:07,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:22:07,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:22:07,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:22:07,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:22:07,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:22:07,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:22:07,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:22:07,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:22:07,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:22:07,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:22:07,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:22:07,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:22:07,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:22:07,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:22:07,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:22:07,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:22:07,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:22:07,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:22:07,053 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:22:07,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:22:07,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:22:07,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:22:07,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:22:07,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:22:07,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:22:07,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:22:07,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:22:07,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:22:07,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:22:07,055 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:22:07,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:22:07,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:22:07,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:22:07,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:22:07,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:22:07,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:22:07,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:22:07,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:22:07,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:22:07,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:22:07,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:22:07,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:22:07,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:22:07,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:22:07,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:22:07,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:22:07,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:22:07,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:22:07,546 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:22:07,548 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c [2020-09-24 19:22:07,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5e9b8292/c4b98cec46004ed28eb23037e1a39c0c/FLAG4260e7572 [2020-09-24 19:22:08,254 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:22:08,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-2.c [2020-09-24 19:22:08,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5e9b8292/c4b98cec46004ed28eb23037e1a39c0c/FLAG4260e7572 [2020-09-24 19:22:08,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5e9b8292/c4b98cec46004ed28eb23037e1a39c0c [2020-09-24 19:22:08,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:22:08,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:22:08,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:22:08,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:22:08,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:22:08,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:22:08" (1/1) ... [2020-09-24 19:22:08,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:08, skipping insertion in model container [2020-09-24 19:22:08,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:22:08" (1/1) ... [2020-09-24 19:22:08,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:22:08,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:22:08,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:22:08,973 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:22:09,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:22:09,165 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:22:09,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:09 WrapperNode [2020-09-24 19:22:09,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:22:09,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:22:09,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:22:09,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:22:09,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:09" (1/1) ... [2020-09-24 19:22:09,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:09" (1/1) ... [2020-09-24 19:22:09,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:09" (1/1) ... [2020-09-24 19:22:09,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:09" (1/1) ... [2020-09-24 19:22:09,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:09" (1/1) ... [2020-09-24 19:22:09,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:09" (1/1) ... [2020-09-24 19:22:09,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:09" (1/1) ... [2020-09-24 19:22:09,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:22:09,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:22:09,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:22:09,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:22:09,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:22:09,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:22:09,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:22:09,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-09-24 19:22:09,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:22:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:22:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 19:22:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:22:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 19:22:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-09-24 19:22:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:22:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:22:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:22:09,544 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 19:22:10,159 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-09-24 19:22:10,159 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-09-24 19:22:10,185 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:22:10,185 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:22:10,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:22:10 BoogieIcfgContainer [2020-09-24 19:22:10,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:22:10,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:22:10,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:22:10,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:22:10,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:22:08" (1/3) ... [2020-09-24 19:22:10,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168c08e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:22:10, skipping insertion in model container [2020-09-24 19:22:10,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:22:09" (2/3) ... [2020-09-24 19:22:10,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168c08e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:22:10, skipping insertion in model container [2020-09-24 19:22:10,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:22:10" (3/3) ... [2020-09-24 19:22:10,204 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-2.c [2020-09-24 19:22:10,216 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:22:10,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:22:10,251 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:22:10,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:22:10,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:22:10,281 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:22:10,282 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:22:10,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:22:10,282 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:22:10,282 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:22:10,282 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:22:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states. [2020-09-24 19:22:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 19:22:10,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:10,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:10,333 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:10,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1836119895, now seen corresponding path program 1 times [2020-09-24 19:22:10,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:10,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193151483] [2020-09-24 19:22:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:10,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:11,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:11,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 19:22:11,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:22:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-09-24 19:22:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 19:22:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:22:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 19:22:11,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:11,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:11,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:11,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:11,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:22:11,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:11,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:22:11,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193151483] [2020-09-24 19:22:11,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:11,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:11,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969521745] [2020-09-24 19:22:11,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:11,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:11,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:11,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:11,811 INFO L87 Difference]: Start difference. First operand 383 states. Second operand 3 states. [2020-09-24 19:22:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:11,985 INFO L93 Difference]: Finished difference Result 849 states and 1106 transitions. [2020-09-24 19:22:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:11,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2020-09-24 19:22:11,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:12,020 INFO L225 Difference]: With dead ends: 849 [2020-09-24 19:22:12,020 INFO L226 Difference]: Without dead ends: 533 [2020-09-24 19:22:12,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-09-24 19:22:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2020-09-24 19:22:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-09-24 19:22:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 639 transitions. [2020-09-24 19:22:12,125 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 639 transitions. Word has length 160 [2020-09-24 19:22:12,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:12,126 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 639 transitions. [2020-09-24 19:22:12,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:12,126 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 639 transitions. [2020-09-24 19:22:12,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-24 19:22:12,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:12,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:12,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:22:12,133 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:12,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2087119921, now seen corresponding path program 1 times [2020-09-24 19:22:12,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:12,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802855309] [2020-09-24 19:22:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:12,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:12,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:12,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:12,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:13,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:13,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-24 19:22:13,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:22:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:22:13,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-24 19:22:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:22:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:13,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:13,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:13,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:13,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:13,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:22:13,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:13,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:22:13,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802855309] [2020-09-24 19:22:13,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:13,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:13,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616344196] [2020-09-24 19:22:13,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:13,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:13,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:13,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:13,277 INFO L87 Difference]: Start difference. First operand 533 states and 639 transitions. Second operand 3 states. [2020-09-24 19:22:13,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:13,486 INFO L93 Difference]: Finished difference Result 985 states and 1222 transitions. [2020-09-24 19:22:13,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:13,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2020-09-24 19:22:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:13,498 INFO L225 Difference]: With dead ends: 985 [2020-09-24 19:22:13,499 INFO L226 Difference]: Without dead ends: 594 [2020-09-24 19:22:13,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:13,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-09-24 19:22:13,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 573. [2020-09-24 19:22:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-09-24 19:22:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 689 transitions. [2020-09-24 19:22:13,537 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 689 transitions. Word has length 180 [2020-09-24 19:22:13,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:13,538 INFO L479 AbstractCegarLoop]: Abstraction has 573 states and 689 transitions. [2020-09-24 19:22:13,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:13,538 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 689 transitions. [2020-09-24 19:22:13,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 19:22:13,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:13,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:13,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:22:13,542 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:13,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1140697987, now seen corresponding path program 1 times [2020-09-24 19:22:13,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:13,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194804149] [2020-09-24 19:22:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:13,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:13,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:14,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:14,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:14,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:14,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-24 19:22:14,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:22:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:22:14,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-24 19:22:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:22:14,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:14,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:14,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:14,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:14,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:14,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:14,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:22:14,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:14,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:14,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:14,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:14,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:22:14,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194804149] [2020-09-24 19:22:14,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:14,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:14,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489923653] [2020-09-24 19:22:14,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:14,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:14,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:14,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:14,696 INFO L87 Difference]: Start difference. First operand 573 states and 689 transitions. Second operand 3 states. [2020-09-24 19:22:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:14,798 INFO L93 Difference]: Finished difference Result 1004 states and 1237 transitions. [2020-09-24 19:22:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:14,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-24 19:22:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:14,808 INFO L225 Difference]: With dead ends: 1004 [2020-09-24 19:22:14,808 INFO L226 Difference]: Without dead ends: 785 [2020-09-24 19:22:14,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-09-24 19:22:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2020-09-24 19:22:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-09-24 19:22:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 956 transitions. [2020-09-24 19:22:14,871 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 956 transitions. Word has length 187 [2020-09-24 19:22:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:14,873 INFO L479 AbstractCegarLoop]: Abstraction has 785 states and 956 transitions. [2020-09-24 19:22:14,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 956 transitions. [2020-09-24 19:22:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 19:22:14,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:14,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:14,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:22:14,885 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:14,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:14,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1945874443, now seen corresponding path program 1 times [2020-09-24 19:22:14,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:14,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639292682] [2020-09-24 19:22:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:15,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:15,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:15,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:15,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-24 19:22:15,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:22:15,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-09-24 19:22:15,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-24 19:22:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:22:15,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:15,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:15,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:15,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:15,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:15,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:22:15,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 19:22:16,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639292682] [2020-09-24 19:22:16,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:16,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:16,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459108322] [2020-09-24 19:22:16,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:16,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:16,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:16,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:16,004 INFO L87 Difference]: Start difference. First operand 785 states and 956 transitions. Second operand 3 states. [2020-09-24 19:22:16,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:16,229 INFO L93 Difference]: Finished difference Result 1614 states and 2066 transitions. [2020-09-24 19:22:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:16,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-09-24 19:22:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:16,235 INFO L225 Difference]: With dead ends: 1614 [2020-09-24 19:22:16,235 INFO L226 Difference]: Without dead ends: 968 [2020-09-24 19:22:16,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-09-24 19:22:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 917. [2020-09-24 19:22:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-09-24 19:22:16,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1115 transitions. [2020-09-24 19:22:16,262 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1115 transitions. Word has length 201 [2020-09-24 19:22:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:16,263 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 1115 transitions. [2020-09-24 19:22:16,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1115 transitions. [2020-09-24 19:22:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 19:22:16,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:16,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:16,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:22:16,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:16,269 INFO L82 PathProgramCache]: Analyzing trace with hash 505491541, now seen corresponding path program 1 times [2020-09-24 19:22:16,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:16,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313906718] [2020-09-24 19:22:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:16,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:16,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:17,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:17,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-24 19:22:17,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:22:17,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:22:17,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-24 19:22:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:22:17,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:17,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:17,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:17,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:17,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:17,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:22:17,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 19:22:17,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313906718] [2020-09-24 19:22:17,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:17,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:17,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659826089] [2020-09-24 19:22:17,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:17,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:17,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:17,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:17,492 INFO L87 Difference]: Start difference. First operand 917 states and 1115 transitions. Second operand 3 states. [2020-09-24 19:22:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:17,734 INFO L93 Difference]: Finished difference Result 1789 states and 2230 transitions. [2020-09-24 19:22:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:17,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-09-24 19:22:17,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:17,742 INFO L225 Difference]: With dead ends: 1789 [2020-09-24 19:22:17,743 INFO L226 Difference]: Without dead ends: 1014 [2020-09-24 19:22:17,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-24 19:22:17,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 983. [2020-09-24 19:22:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-09-24 19:22:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1196 transitions. [2020-09-24 19:22:17,788 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1196 transitions. Word has length 201 [2020-09-24 19:22:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:17,789 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1196 transitions. [2020-09-24 19:22:17,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1196 transitions. [2020-09-24 19:22:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-24 19:22:17,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:17,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:17,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:22:17,794 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:17,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:17,795 INFO L82 PathProgramCache]: Analyzing trace with hash -293213127, now seen corresponding path program 1 times [2020-09-24 19:22:17,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:17,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701498782] [2020-09-24 19:22:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:17,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:17,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:18,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:18,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-24 19:22:18,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:22:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:22:18,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-24 19:22:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:22:18,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:18,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:18,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:18,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:18,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:18,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:22:18,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:18,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:18,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:22:18,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701498782] [2020-09-24 19:22:18,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:18,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:18,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104642535] [2020-09-24 19:22:18,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:18,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:18,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:18,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:18,929 INFO L87 Difference]: Start difference. First operand 983 states and 1196 transitions. Second operand 3 states. [2020-09-24 19:22:18,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:18,974 INFO L93 Difference]: Finished difference Result 2560 states and 3143 transitions. [2020-09-24 19:22:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:18,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-09-24 19:22:18,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:18,987 INFO L225 Difference]: With dead ends: 2560 [2020-09-24 19:22:18,987 INFO L226 Difference]: Without dead ends: 1719 [2020-09-24 19:22:18,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:18,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-09-24 19:22:19,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1717. [2020-09-24 19:22:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1717 states. [2020-09-24 19:22:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2080 transitions. [2020-09-24 19:22:19,036 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2080 transitions. Word has length 208 [2020-09-24 19:22:19,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:19,036 INFO L479 AbstractCegarLoop]: Abstraction has 1717 states and 2080 transitions. [2020-09-24 19:22:19,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2080 transitions. [2020-09-24 19:22:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-24 19:22:19,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:19,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:19,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:22:19,043 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:19,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1793361374, now seen corresponding path program 1 times [2020-09-24 19:22:19,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:19,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011685486] [2020-09-24 19:22:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:19,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:19,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:20,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:20,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-24 19:22:20,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:22:20,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:22:20,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-24 19:22:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:22:20,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:20,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:20,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:20,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:20,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:22:20,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 19:22:20,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011685486] [2020-09-24 19:22:20,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:20,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:20,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162345750] [2020-09-24 19:22:20,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:20,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:20,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:20,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:20,215 INFO L87 Difference]: Start difference. First operand 1717 states and 2080 transitions. Second operand 3 states. [2020-09-24 19:22:20,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:20,298 INFO L93 Difference]: Finished difference Result 3292 states and 4024 transitions. [2020-09-24 19:22:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:20,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2020-09-24 19:22:20,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:20,312 INFO L225 Difference]: With dead ends: 3292 [2020-09-24 19:22:20,312 INFO L226 Difference]: Without dead ends: 2238 [2020-09-24 19:22:20,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2020-09-24 19:22:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2238. [2020-09-24 19:22:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2238 states. [2020-09-24 19:22:20,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 2721 transitions. [2020-09-24 19:22:20,384 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 2721 transitions. Word has length 209 [2020-09-24 19:22:20,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:20,385 INFO L479 AbstractCegarLoop]: Abstraction has 2238 states and 2721 transitions. [2020-09-24 19:22:20,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 2721 transitions. [2020-09-24 19:22:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 19:22:20,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:20,392 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:20,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:22:20,393 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:20,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:20,393 INFO L82 PathProgramCache]: Analyzing trace with hash 528774517, now seen corresponding path program 1 times [2020-09-24 19:22:20,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:20,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415150638] [2020-09-24 19:22:20,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:20,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:21,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:21,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:21,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-24 19:22:21,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:22:21,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:22:21,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:21,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:21,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-09-24 19:22:21,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:22:21,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:21,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:21,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:21,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:21,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:22:21,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:21,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 19:22:21,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415150638] [2020-09-24 19:22:21,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:21,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:21,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676807154] [2020-09-24 19:22:21,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:21,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:21,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:21,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:21,554 INFO L87 Difference]: Start difference. First operand 2238 states and 2721 transitions. Second operand 3 states. [2020-09-24 19:22:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:21,836 INFO L93 Difference]: Finished difference Result 4840 states and 6088 transitions. [2020-09-24 19:22:21,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:21,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-24 19:22:21,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:21,855 INFO L225 Difference]: With dead ends: 4840 [2020-09-24 19:22:21,855 INFO L226 Difference]: Without dead ends: 2744 [2020-09-24 19:22:21,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2020-09-24 19:22:21,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2558. [2020-09-24 19:22:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2558 states. [2020-09-24 19:22:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 3133 transitions. [2020-09-24 19:22:21,951 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 3133 transitions. Word has length 224 [2020-09-24 19:22:21,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:21,952 INFO L479 AbstractCegarLoop]: Abstraction has 2558 states and 3133 transitions. [2020-09-24 19:22:21,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:21,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 3133 transitions. [2020-09-24 19:22:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-24 19:22:21,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:21,964 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:21,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:22:21,964 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:21,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:21,965 INFO L82 PathProgramCache]: Analyzing trace with hash 307978235, now seen corresponding path program 1 times [2020-09-24 19:22:21,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:21,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022550800] [2020-09-24 19:22:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:22,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:22,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-24 19:22:22,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:22:22,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:22:22,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-24 19:22:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:22:22,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:23,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:23,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:23,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:23,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:23,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:22:23,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:23,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 19:22:23,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022550800] [2020-09-24 19:22:23,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:23,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:23,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115189216] [2020-09-24 19:22:23,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:23,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:23,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:23,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:23,084 INFO L87 Difference]: Start difference. First operand 2558 states and 3133 transitions. Second operand 3 states. [2020-09-24 19:22:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:23,186 INFO L93 Difference]: Finished difference Result 5010 states and 6164 transitions. [2020-09-24 19:22:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:23,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-09-24 19:22:23,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:23,201 INFO L225 Difference]: With dead ends: 5010 [2020-09-24 19:22:23,202 INFO L226 Difference]: Without dead ends: 2594 [2020-09-24 19:22:23,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:23,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2020-09-24 19:22:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2574. [2020-09-24 19:22:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2574 states. [2020-09-24 19:22:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 3137 transitions. [2020-09-24 19:22:23,333 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 3137 transitions. Word has length 233 [2020-09-24 19:22:23,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:23,333 INFO L479 AbstractCegarLoop]: Abstraction has 2574 states and 3137 transitions. [2020-09-24 19:22:23,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:23,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 3137 transitions. [2020-09-24 19:22:23,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 19:22:23,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:23,346 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:23,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:22:23,347 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:23,348 INFO L82 PathProgramCache]: Analyzing trace with hash 686294043, now seen corresponding path program 1 times [2020-09-24 19:22:23,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:23,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67707101] [2020-09-24 19:22:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:23,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:23,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:23,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:24,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:24,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-24 19:22:24,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:22:24,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:22:24,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 19:22:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:22:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:24,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:24,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:24,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:24,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:22:24,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 19:22:24,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67707101] [2020-09-24 19:22:24,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:24,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:24,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757358982] [2020-09-24 19:22:24,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:24,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:24,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:24,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:24,495 INFO L87 Difference]: Start difference. First operand 2574 states and 3137 transitions. Second operand 3 states. [2020-09-24 19:22:24,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:24,587 INFO L93 Difference]: Finished difference Result 7411 states and 9074 transitions. [2020-09-24 19:22:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:24,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-09-24 19:22:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:24,611 INFO L225 Difference]: With dead ends: 7411 [2020-09-24 19:22:24,611 INFO L226 Difference]: Without dead ends: 4979 [2020-09-24 19:22:24,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2020-09-24 19:22:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4977. [2020-09-24 19:22:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4977 states. [2020-09-24 19:22:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 6054 transitions. [2020-09-24 19:22:24,767 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 6054 transitions. Word has length 237 [2020-09-24 19:22:24,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:24,767 INFO L479 AbstractCegarLoop]: Abstraction has 4977 states and 6054 transitions. [2020-09-24 19:22:24,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 6054 transitions. [2020-09-24 19:22:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 19:22:24,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:24,782 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:24,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:22:24,782 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:24,783 INFO L82 PathProgramCache]: Analyzing trace with hash -2050439495, now seen corresponding path program 1 times [2020-09-24 19:22:24,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:24,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649384074] [2020-09-24 19:22:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:25,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:25,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:25,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:25,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:25,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-24 19:22:25,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 19:22:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:22:25,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:22:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-09-24 19:22:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:22:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:25,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:25,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:25,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:25,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:25,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:25,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:22:25,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:25,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-24 19:22:25,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649384074] [2020-09-24 19:22:25,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:25,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:22:25,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340050748] [2020-09-24 19:22:25,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:22:25,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:25,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:22:25,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:25,903 INFO L87 Difference]: Start difference. First operand 4977 states and 6054 transitions. Second operand 3 states. [2020-09-24 19:22:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:26,037 INFO L93 Difference]: Finished difference Result 9807 states and 11975 transitions. [2020-09-24 19:22:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:22:26,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-09-24 19:22:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:26,067 INFO L225 Difference]: With dead ends: 9807 [2020-09-24 19:22:26,067 INFO L226 Difference]: Without dead ends: 6179 [2020-09-24 19:22:26,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:22:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6179 states. [2020-09-24 19:22:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6179 to 6179. [2020-09-24 19:22:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6179 states. [2020-09-24 19:22:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6179 states to 6179 states and 7528 transitions. [2020-09-24 19:22:26,293 INFO L78 Accepts]: Start accepts. Automaton has 6179 states and 7528 transitions. Word has length 239 [2020-09-24 19:22:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:26,295 INFO L479 AbstractCegarLoop]: Abstraction has 6179 states and 7528 transitions. [2020-09-24 19:22:26,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:22:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6179 states and 7528 transitions. [2020-09-24 19:22:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-24 19:22:26,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:26,316 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:26,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:22:26,317 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:26,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1481414038, now seen corresponding path program 1 times [2020-09-24 19:22:26,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:26,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861687721] [2020-09-24 19:22:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:26,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:26,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-24 19:22:26,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:22:26,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-24 19:22:26,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:22:26,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:22:26,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-24 19:22:26,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:26,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:26,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:26,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:26,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:22:26,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:26,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:26,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:22:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 19:22:26,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861687721] [2020-09-24 19:22:26,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:26,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:22:26,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63673053] [2020-09-24 19:22:26,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:22:26,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:26,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:22:26,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:22:26,990 INFO L87 Difference]: Start difference. First operand 6179 states and 7528 transitions. Second operand 5 states. [2020-09-24 19:22:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:27,330 INFO L93 Difference]: Finished difference Result 12579 states and 15363 transitions. [2020-09-24 19:22:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:22:27,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-09-24 19:22:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:27,380 INFO L225 Difference]: With dead ends: 12579 [2020-09-24 19:22:27,380 INFO L226 Difference]: Without dead ends: 6491 [2020-09-24 19:22:27,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:22:27,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6491 states. [2020-09-24 19:22:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6491 to 6191. [2020-09-24 19:22:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6191 states. [2020-09-24 19:22:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 7544 transitions. [2020-09-24 19:22:27,556 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 7544 transitions. Word has length 249 [2020-09-24 19:22:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:27,556 INFO L479 AbstractCegarLoop]: Abstraction has 6191 states and 7544 transitions. [2020-09-24 19:22:27,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:22:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 7544 transitions. [2020-09-24 19:22:27,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-24 19:22:27,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:27,571 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:27,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:22:27,572 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:27,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:27,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1844265594, now seen corresponding path program 1 times [2020-09-24 19:22:27,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:27,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209134080] [2020-09-24 19:22:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:27,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:27,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:27,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:27,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-24 19:22:27,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:22:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-09-24 19:22:27,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:22:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:22:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 19:22:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:22:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:22:28,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:22:28,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:22:28,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:22:28,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:22:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:22:28,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:22:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:22:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:22:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:22:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:22:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-09-24 19:22:28,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209134080] [2020-09-24 19:22:28,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:22:28,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:22:28,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067924731] [2020-09-24 19:22:28,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:22:28,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:22:28,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:22:28,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:22:28,128 INFO L87 Difference]: Start difference. First operand 6191 states and 7544 transitions. Second operand 5 states. [2020-09-24 19:22:28,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:22:28,419 INFO L93 Difference]: Finished difference Result 12223 states and 14919 transitions. [2020-09-24 19:22:28,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:22:28,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-09-24 19:22:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:22:28,432 INFO L225 Difference]: With dead ends: 12223 [2020-09-24 19:22:28,433 INFO L226 Difference]: Without dead ends: 6185 [2020-09-24 19:22:28,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:22:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2020-09-24 19:22:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 6185. [2020-09-24 19:22:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6185 states. [2020-09-24 19:22:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6185 states to 6185 states and 7534 transitions. [2020-09-24 19:22:28,580 INFO L78 Accepts]: Start accepts. Automaton has 6185 states and 7534 transitions. Word has length 268 [2020-09-24 19:22:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:22:28,581 INFO L479 AbstractCegarLoop]: Abstraction has 6185 states and 7534 transitions. [2020-09-24 19:22:28,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:22:28,581 INFO L276 IsEmpty]: Start isEmpty. Operand 6185 states and 7534 transitions. [2020-09-24 19:22:28,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-24 19:22:28,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:22:28,597 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:22:28,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 19:22:28,597 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:22:28,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:22:28,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1703791530, now seen corresponding path program 1 times [2020-09-24 19:22:28,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:22:28,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591754664] [2020-09-24 19:22:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:22:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:22:28,635 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:22:28,635 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:22:28,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 19:22:28,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:22:28 BoogieIcfgContainer [2020-09-24 19:22:28,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:22:28,690 INFO L168 Benchmark]: Toolchain (without parser) took 20125.46 ms. Allocated memory was 140.5 MB in the beginning and 581.4 MB in the end (delta: 440.9 MB). Free memory was 102.5 MB in the beginning and 416.1 MB in the end (delta: -313.5 MB). Peak memory consumption was 127.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:22:28,691 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:22:28,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.28 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 179.8 MB in the end (delta: -77.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:22:28,692 INFO L168 Benchmark]: Boogie Preprocessor took 64.98 ms. Allocated memory is still 203.9 MB. Free memory was 179.8 MB in the beginning and 177.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:22:28,693 INFO L168 Benchmark]: RCFGBuilder took 962.67 ms. Allocated memory is still 203.9 MB. Free memory was 177.1 MB in the beginning and 113.3 MB in the end (delta: 63.8 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:22:28,693 INFO L168 Benchmark]: TraceAbstraction took 18490.39 ms. Allocated memory was 203.9 MB in the beginning and 581.4 MB in the end (delta: 377.5 MB). Free memory was 112.6 MB in the beginning and 416.1 MB in the end (delta: -303.4 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:22:28,696 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 597.28 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 179.8 MB in the end (delta: -77.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.98 ms. Allocated memory is still 203.9 MB. Free memory was 179.8 MB in the beginning and 177.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 962.67 ms. Allocated memory is still 203.9 MB. Free memory was 177.1 MB in the beginning and 113.3 MB in the end (delta: 63.8 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18490.39 ms. Allocated memory was 203.9 MB in the beginning and 581.4 MB in the end (delta: 377.5 MB). Free memory was 112.6 MB in the beginning and 416.1 MB in the end (delta: -303.4 MB). Peak memory consumption was 74.0 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, 383 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.3s, OverallIterations: 14, TraceHistogramMax: 6, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5716 SDtfs, 3388 SDslu, 4168 SDs, 0 SdLazy, 773 SolverSat, 150 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6191occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 613 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 3068 NumberOfCodeBlocks, 3068 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2783 ConstructedInterpolants, 0 QuantifiedInterpolants, 873448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 653/653 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...