/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-2a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:33:29,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:33:29,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:33:29,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:33:29,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:33:29,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:33:29,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:33:29,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:33:29,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:33:29,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:33:29,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:33:29,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:33:29,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:33:29,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:33:29,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:33:29,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:33:29,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:33:29,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:33:29,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:33:29,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:33:29,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:33:29,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:33:29,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:33:29,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:33:29,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:33:29,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:33:29,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:33:29,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:33:29,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:33:29,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:33:29,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:33:29,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:33:29,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:33:29,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:33:30,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:33:30,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:33:30,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:33:30,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:33:30,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:33:30,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:33:30,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:33:30,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 10:33:30,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:33:30,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:33:30,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:33:30,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:33:30,032 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:33:30,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:33:30,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:33:30,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:33:30,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:33:30,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:33:30,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:33:30,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:33:30,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:33:30,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:33:30,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:33:30,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:33:30,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:33:30,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:33:30,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:33:30,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:33:30,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:33:30,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:33:30,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:33:30,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:33:30,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:33:30,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:33:30,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:33:30,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:33:30,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:33:30,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:33:30,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:33:30,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:33:30,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:33:30,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:33:30,433 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:33:30,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-10-12 10:33:30,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4036fca0f/fa3668b70c3b4dffbd8b027d22c92343/FLAGde7684597 [2020-10-12 10:33:31,109 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:33:31,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-2a.c [2020-10-12 10:33:31,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4036fca0f/fa3668b70c3b4dffbd8b027d22c92343/FLAGde7684597 [2020-10-12 10:33:31,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4036fca0f/fa3668b70c3b4dffbd8b027d22c92343 [2020-10-12 10:33:31,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:33:31,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:33:31,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:33:31,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:33:31,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:33:31,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:33:31" (1/1) ... [2020-10-12 10:33:31,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ee63ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31, skipping insertion in model container [2020-10-12 10:33:31,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:33:31" (1/1) ... [2020-10-12 10:33:31,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:33:31,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:33:31,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:33:31,728 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:33:31,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:33:31,940 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:33:31,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31 WrapperNode [2020-10-12 10:33:31,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:33:31,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:33:31,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:33:31,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:33:31,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31" (1/1) ... [2020-10-12 10:33:31,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31" (1/1) ... [2020-10-12 10:33:31,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31" (1/1) ... [2020-10-12 10:33:31,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31" (1/1) ... [2020-10-12 10:33:31,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31" (1/1) ... [2020-10-12 10:33:31,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31" (1/1) ... [2020-10-12 10:33:31,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31" (1/1) ... [2020-10-12 10:33:32,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:33:32,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:33:32,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:33:32,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:33:32,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:33:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:33:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:33:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-12 10:33:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:33:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:33:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:33:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 10:33:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-12 10:33:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:33:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:33:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:33:32,283 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 10:33:32,879 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-12 10:33:32,879 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-12 10:33:32,902 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:33:32,903 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 10:33:32,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:33:32 BoogieIcfgContainer [2020-10-12 10:33:32,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:33:32,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:33:32,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:33:32,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:33:32,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:33:31" (1/3) ... [2020-10-12 10:33:32,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c306185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:33:32, skipping insertion in model container [2020-10-12 10:33:32,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:33:31" (2/3) ... [2020-10-12 10:33:32,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c306185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:33:32, skipping insertion in model container [2020-10-12 10:33:32,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:33:32" (3/3) ... [2020-10-12 10:33:32,920 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2020-10-12 10:33:32,934 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:33:32,944 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:33:32,962 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:33:32,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:33:32,998 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:33:32,998 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:33:32,998 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:33:32,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:33:32,998 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:33:32,999 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:33:32,999 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:33:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states. [2020-10-12 10:33:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 10:33:33,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:33,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:33,034 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:33,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:33,040 INFO L82 PathProgramCache]: Analyzing trace with hash 631865998, now seen corresponding path program 1 times [2020-10-12 10:33:33,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:33,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563661558] [2020-10-12 10:33:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:33,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:33,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:33,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:33,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 10:33:33,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:33:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-12 10:33:33,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:33,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:33:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:33:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 10:33:33,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:33,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:33,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:33,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:33,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:33,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:33,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:33:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:33,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563661558] [2020-10-12 10:33:33,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:33,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:33,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506634823] [2020-10-12 10:33:33,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:33,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:33,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:33,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:33,870 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 3 states. [2020-10-12 10:33:34,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:34,117 INFO L93 Difference]: Finished difference Result 257 states and 432 transitions. [2020-10-12 10:33:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:34,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-12 10:33:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:34,134 INFO L225 Difference]: With dead ends: 257 [2020-10-12 10:33:34,134 INFO L226 Difference]: Without dead ends: 117 [2020-10-12 10:33:34,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:34,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-12 10:33:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-12 10:33:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-12 10:33:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 174 transitions. [2020-10-12 10:33:34,203 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 174 transitions. Word has length 29 [2020-10-12 10:33:34,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:34,204 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 174 transitions. [2020-10-12 10:33:34,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 174 transitions. [2020-10-12 10:33:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 10:33:34,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:34,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:34,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:33:34,207 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:34,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:34,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1718219534, now seen corresponding path program 1 times [2020-10-12 10:33:34,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:34,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351196435] [2020-10-12 10:33:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:34,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:34,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:34,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:34,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 10:33:34,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:33:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 10:33:34,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 10:33:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 10:33:34,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:34,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:34,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:34,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:34,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:34,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:34,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:34,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:34,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351196435] [2020-10-12 10:33:34,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:34,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:34,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579048448] [2020-10-12 10:33:34,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:34,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:34,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:34,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:34,479 INFO L87 Difference]: Start difference. First operand 117 states and 174 transitions. Second operand 3 states. [2020-10-12 10:33:34,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:34,745 INFO L93 Difference]: Finished difference Result 273 states and 423 transitions. [2020-10-12 10:33:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:34,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-10-12 10:33:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:34,749 INFO L225 Difference]: With dead ends: 273 [2020-10-12 10:33:34,749 INFO L226 Difference]: Without dead ends: 171 [2020-10-12 10:33:34,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-12 10:33:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2020-10-12 10:33:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-12 10:33:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 223 transitions. [2020-10-12 10:33:34,768 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 223 transitions. Word has length 41 [2020-10-12 10:33:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:34,769 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 223 transitions. [2020-10-12 10:33:34,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 223 transitions. [2020-10-12 10:33:34,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 10:33:34,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:34,772 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:34,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:33:34,773 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:34,774 INFO L82 PathProgramCache]: Analyzing trace with hash 483864407, now seen corresponding path program 1 times [2020-10-12 10:33:34,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:34,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806295217] [2020-10-12 10:33:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:34,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:35,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 10:33:35,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:33:35,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 10:33:35,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 10:33:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:33:35,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:35,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:35,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:35,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:35,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:35,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:35,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:35,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:33:35,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806295217] [2020-10-12 10:33:35,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:35,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:35,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090846373] [2020-10-12 10:33:35,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:35,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:35,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:35,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:35,047 INFO L87 Difference]: Start difference. First operand 158 states and 223 transitions. Second operand 3 states. [2020-10-12 10:33:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:35,202 INFO L93 Difference]: Finished difference Result 322 states and 463 transitions. [2020-10-12 10:33:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:35,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-10-12 10:33:35,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:35,205 INFO L225 Difference]: With dead ends: 322 [2020-10-12 10:33:35,205 INFO L226 Difference]: Without dead ends: 179 [2020-10-12 10:33:35,207 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 [2020-10-12 10:33:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-12 10:33:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2020-10-12 10:33:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-12 10:33:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 245 transitions. [2020-10-12 10:33:35,221 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 245 transitions. Word has length 55 [2020-10-12 10:33:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:35,221 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 245 transitions. [2020-10-12 10:33:35,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:35,222 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 245 transitions. [2020-10-12 10:33:35,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 10:33:35,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:35,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:35,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:33:35,225 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:35,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:35,226 INFO L82 PathProgramCache]: Analyzing trace with hash -245351623, now seen corresponding path program 1 times [2020-10-12 10:33:35,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:35,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438531680] [2020-10-12 10:33:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:35,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:35,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 10:33:35,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:33:35,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-12 10:33:35,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:35,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 10:33:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 10:33:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:35,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:35,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:35,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:35,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:33:35,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438531680] [2020-10-12 10:33:35,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:35,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:35,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043372696] [2020-10-12 10:33:35,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:35,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:35,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:35,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:35,495 INFO L87 Difference]: Start difference. First operand 175 states and 245 transitions. Second operand 3 states. [2020-10-12 10:33:35,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:35,524 INFO L93 Difference]: Finished difference Result 356 states and 499 transitions. [2020-10-12 10:33:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:35,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-10-12 10:33:35,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:35,527 INFO L225 Difference]: With dead ends: 356 [2020-10-12 10:33:35,527 INFO L226 Difference]: Without dead ends: 196 [2020-10-12 10:33:35,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:35,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-12 10:33:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-10-12 10:33:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-12 10:33:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 272 transitions. [2020-10-12 10:33:35,541 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 272 transitions. Word has length 72 [2020-10-12 10:33:35,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:35,542 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 272 transitions. [2020-10-12 10:33:35,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:35,542 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 272 transitions. [2020-10-12 10:33:35,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 10:33:35,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:35,545 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:35,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:33:35,545 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:35,546 INFO L82 PathProgramCache]: Analyzing trace with hash -385900233, now seen corresponding path program 1 times [2020-10-12 10:33:35,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:35,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440864583] [2020-10-12 10:33:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:35,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 10:33:35,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:33:35,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 10:33:35,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:35,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 10:33:35,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:33:35,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:35,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:35,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:35,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:35,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 10:33:35,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440864583] [2020-10-12 10:33:35,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:35,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:35,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590148949] [2020-10-12 10:33:35,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:35,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:35,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:35,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:35,737 INFO L87 Difference]: Start difference. First operand 196 states and 272 transitions. Second operand 3 states. [2020-10-12 10:33:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:35,783 INFO L93 Difference]: Finished difference Result 535 states and 750 transitions. [2020-10-12 10:33:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:35,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-10-12 10:33:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:35,786 INFO L225 Difference]: With dead ends: 535 [2020-10-12 10:33:35,787 INFO L226 Difference]: Without dead ends: 354 [2020-10-12 10:33:35,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:35,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-12 10:33:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2020-10-12 10:33:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-12 10:33:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 494 transitions. [2020-10-12 10:33:35,806 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 494 transitions. Word has length 72 [2020-10-12 10:33:35,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:35,807 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 494 transitions. [2020-10-12 10:33:35,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 494 transitions. [2020-10-12 10:33:35,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 10:33:35,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:35,810 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:35,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:33:35,811 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:35,811 INFO L82 PathProgramCache]: Analyzing trace with hash -145706121, now seen corresponding path program 1 times [2020-10-12 10:33:35,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:35,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90151968] [2020-10-12 10:33:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:35,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:35,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:36,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:36,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:36,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 10:33:36,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:33:36,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-12 10:33:36,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:36,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:36,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 10:33:36,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 10:33:36,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:36,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:36,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:36,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:36,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-12 10:33:36,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90151968] [2020-10-12 10:33:36,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:36,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:36,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694312992] [2020-10-12 10:33:36,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:36,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:36,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:36,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:36,342 INFO L87 Difference]: Start difference. First operand 354 states and 494 transitions. Second operand 3 states. [2020-10-12 10:33:36,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:36,411 INFO L93 Difference]: Finished difference Result 851 states and 1194 transitions. [2020-10-12 10:33:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:36,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-10-12 10:33:36,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:36,420 INFO L225 Difference]: With dead ends: 851 [2020-10-12 10:33:36,421 INFO L226 Difference]: Without dead ends: 512 [2020-10-12 10:33:36,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:36,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-12 10:33:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2020-10-12 10:33:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-12 10:33:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 717 transitions. [2020-10-12 10:33:36,454 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 717 transitions. Word has length 90 [2020-10-12 10:33:36,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:36,456 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 717 transitions. [2020-10-12 10:33:36,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 717 transitions. [2020-10-12 10:33:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 10:33:36,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:36,464 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] [2020-10-12 10:33:36,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:33:36,465 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:36,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:36,470 INFO L82 PathProgramCache]: Analyzing trace with hash 649333167, now seen corresponding path program 1 times [2020-10-12 10:33:36,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:36,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070875740] [2020-10-12 10:33:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:36,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:36,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:36,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:36,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 10:33:36,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:33:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-12 10:33:36,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-12 10:33:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 10:33:36,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:36,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:36,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:36,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:36,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-12 10:33:36,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070875740] [2020-10-12 10:33:36,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:36,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:36,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708248381] [2020-10-12 10:33:36,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:36,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:36,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:36,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:36,772 INFO L87 Difference]: Start difference. First operand 512 states and 717 transitions. Second operand 3 states. [2020-10-12 10:33:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:36,847 INFO L93 Difference]: Finished difference Result 672 states and 943 transitions. [2020-10-12 10:33:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:36,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-10-12 10:33:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:36,854 INFO L225 Difference]: With dead ends: 672 [2020-10-12 10:33:36,854 INFO L226 Difference]: Without dead ends: 670 [2020-10-12 10:33:36,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:36,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-12 10:33:36,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2020-10-12 10:33:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2020-10-12 10:33:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 941 transitions. [2020-10-12 10:33:36,885 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 941 transitions. Word has length 110 [2020-10-12 10:33:36,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:36,885 INFO L479 AbstractCegarLoop]: Abstraction has 670 states and 941 transitions. [2020-10-12 10:33:36,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:36,886 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 941 transitions. [2020-10-12 10:33:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 10:33:36,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:36,889 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 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] [2020-10-12 10:33:36,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:33:36,890 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:36,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:36,890 INFO L82 PathProgramCache]: Analyzing trace with hash 351851192, now seen corresponding path program 1 times [2020-10-12 10:33:36,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:36,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151559323] [2020-10-12 10:33:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:36,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:37,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:37,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 10:33:37,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:33:37,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-12 10:33:37,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 10:33:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 10:33:37,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:37,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:37,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:37,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:37,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:37,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:37,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:37,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:37,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:37,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 10:33:37,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151559323] [2020-10-12 10:33:37,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:37,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:37,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129650044] [2020-10-12 10:33:37,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:37,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:37,302 INFO L87 Difference]: Start difference. First operand 670 states and 941 transitions. Second operand 3 states. [2020-10-12 10:33:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:37,529 INFO L93 Difference]: Finished difference Result 1525 states and 2215 transitions. [2020-10-12 10:33:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:37,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-10-12 10:33:37,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:37,534 INFO L225 Difference]: With dead ends: 1525 [2020-10-12 10:33:37,535 INFO L226 Difference]: Without dead ends: 866 [2020-10-12 10:33:37,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-12 10:33:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 834. [2020-10-12 10:33:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-12 10:33:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1141 transitions. [2020-10-12 10:33:37,557 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1141 transitions. Word has length 142 [2020-10-12 10:33:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:37,558 INFO L479 AbstractCegarLoop]: Abstraction has 834 states and 1141 transitions. [2020-10-12 10:33:37,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:37,558 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1141 transitions. [2020-10-12 10:33:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 10:33:37,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:37,561 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 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] [2020-10-12 10:33:37,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:33:37,561 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:37,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1957871164, now seen corresponding path program 1 times [2020-10-12 10:33:37,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:37,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503823913] [2020-10-12 10:33:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:37,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:37,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:37,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:37,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 10:33:37,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:33:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 10:33:37,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 10:33:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:33:37,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:37,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:37,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:37,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-12 10:33:37,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503823913] [2020-10-12 10:33:37,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:37,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:37,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224113460] [2020-10-12 10:33:37,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:37,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:37,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:37,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:37,811 INFO L87 Difference]: Start difference. First operand 834 states and 1141 transitions. Second operand 3 states. [2020-10-12 10:33:38,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:38,013 INFO L93 Difference]: Finished difference Result 1849 states and 2611 transitions. [2020-10-12 10:33:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:38,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-10-12 10:33:38,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:38,019 INFO L225 Difference]: With dead ends: 1849 [2020-10-12 10:33:38,019 INFO L226 Difference]: Without dead ends: 1026 [2020-10-12 10:33:38,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-12 10:33:38,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 986. [2020-10-12 10:33:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-12 10:33:38,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1389 transitions. [2020-10-12 10:33:38,045 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1389 transitions. Word has length 142 [2020-10-12 10:33:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:38,045 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1389 transitions. [2020-10-12 10:33:38,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1389 transitions. [2020-10-12 10:33:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 10:33:38,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:38,050 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 10:33:38,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:33:38,050 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:38,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:38,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1197403588, now seen corresponding path program 2 times [2020-10-12 10:33:38,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:38,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3995866] [2020-10-12 10:33:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:38,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:38,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:38,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 10:33:38,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:33:38,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-12 10:33:38,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 10:33:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 10:33:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:38,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:38,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:38,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:38,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:38,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:38,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-12 10:33:38,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3995866] [2020-10-12 10:33:38,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:38,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:38,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496686391] [2020-10-12 10:33:38,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:38,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:38,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:38,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:38,404 INFO L87 Difference]: Start difference. First operand 986 states and 1389 transitions. Second operand 3 states. [2020-10-12 10:33:38,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:38,550 INFO L93 Difference]: Finished difference Result 2049 states and 2919 transitions. [2020-10-12 10:33:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:38,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-10-12 10:33:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:38,556 INFO L225 Difference]: With dead ends: 2049 [2020-10-12 10:33:38,557 INFO L226 Difference]: Without dead ends: 1078 [2020-10-12 10:33:38,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:38,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2020-10-12 10:33:38,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1062. [2020-10-12 10:33:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-10-12 10:33:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1485 transitions. [2020-10-12 10:33:38,585 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1485 transitions. Word has length 154 [2020-10-12 10:33:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:38,585 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1485 transitions. [2020-10-12 10:33:38,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1485 transitions. [2020-10-12 10:33:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 10:33:38,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:38,590 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 8, 8, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 10:33:38,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:33:38,590 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:38,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1065531154, now seen corresponding path program 1 times [2020-10-12 10:33:38,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:38,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468187570] [2020-10-12 10:33:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:38,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:38,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:39,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:39,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 10:33:39,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:33:39,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-12 10:33:39,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 10:33:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:33:39,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:39,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:39,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:39,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:39,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:39,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:39,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-12 10:33:39,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468187570] [2020-10-12 10:33:39,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:39,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:39,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985988090] [2020-10-12 10:33:39,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:39,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:39,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:39,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:39,100 INFO L87 Difference]: Start difference. First operand 1062 states and 1485 transitions. Second operand 3 states. [2020-10-12 10:33:39,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:39,326 INFO L93 Difference]: Finished difference Result 2479 states and 3573 transitions. [2020-10-12 10:33:39,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:39,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2020-10-12 10:33:39,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:39,334 INFO L225 Difference]: With dead ends: 2479 [2020-10-12 10:33:39,335 INFO L226 Difference]: Without dead ends: 1364 [2020-10-12 10:33:39,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-10-12 10:33:39,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1246. [2020-10-12 10:33:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2020-10-12 10:33:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1753 transitions. [2020-10-12 10:33:39,395 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1753 transitions. Word has length 170 [2020-10-12 10:33:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:39,395 INFO L479 AbstractCegarLoop]: Abstraction has 1246 states and 1753 transitions. [2020-10-12 10:33:39,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1753 transitions. [2020-10-12 10:33:39,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-12 10:33:39,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:39,400 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 10:33:39,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:33:39,401 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:39,401 INFO L82 PathProgramCache]: Analyzing trace with hash -474413893, now seen corresponding path program 1 times [2020-10-12 10:33:39,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:39,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927699344] [2020-10-12 10:33:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:39,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:39,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:39,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:39,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 10:33:39,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:33:39,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-12 10:33:39,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 10:33:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 10:33:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:39,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:39,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:39,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:39,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:39,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:39,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:39,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:39,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-12 10:33:39,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927699344] [2020-10-12 10:33:39,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:39,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:39,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134962159] [2020-10-12 10:33:39,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:39,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:39,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:39,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:39,877 INFO L87 Difference]: Start difference. First operand 1246 states and 1753 transitions. Second operand 3 states. [2020-10-12 10:33:39,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:39,932 INFO L93 Difference]: Finished difference Result 2798 states and 3936 transitions. [2020-10-12 10:33:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:39,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2020-10-12 10:33:39,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:39,941 INFO L225 Difference]: With dead ends: 2798 [2020-10-12 10:33:39,941 INFO L226 Difference]: Without dead ends: 1567 [2020-10-12 10:33:39,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:39,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2020-10-12 10:33:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1567. [2020-10-12 10:33:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-10-12 10:33:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2198 transitions. [2020-10-12 10:33:40,004 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2198 transitions. Word has length 179 [2020-10-12 10:33:40,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:40,005 INFO L479 AbstractCegarLoop]: Abstraction has 1567 states and 2198 transitions. [2020-10-12 10:33:40,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2198 transitions. [2020-10-12 10:33:40,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-12 10:33:40,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:40,010 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 10:33:40,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:33:40,010 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:40,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:40,011 INFO L82 PathProgramCache]: Analyzing trace with hash 570978915, now seen corresponding path program 1 times [2020-10-12 10:33:40,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:40,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396008461] [2020-10-12 10:33:40,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:40,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:40,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-12 10:33:40,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:33:40,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-12 10:33:40,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-12 10:33:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 10:33:40,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:40,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:40,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:40,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:40,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:40,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2020-10-12 10:33:40,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396008461] [2020-10-12 10:33:40,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:40,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:40,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670794353] [2020-10-12 10:33:40,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:40,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:40,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:40,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:40,389 INFO L87 Difference]: Start difference. First operand 1567 states and 2198 transitions. Second operand 3 states. [2020-10-12 10:33:40,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:40,602 INFO L93 Difference]: Finished difference Result 3179 states and 4450 transitions. [2020-10-12 10:33:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:40,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-10-12 10:33:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:40,610 INFO L225 Difference]: With dead ends: 3179 [2020-10-12 10:33:40,611 INFO L226 Difference]: Without dead ends: 1627 [2020-10-12 10:33:40,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-10-12 10:33:40,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1557. [2020-10-12 10:33:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1557 states. [2020-10-12 10:33:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2178 transitions. [2020-10-12 10:33:40,659 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2178 transitions. Word has length 181 [2020-10-12 10:33:40,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:40,660 INFO L479 AbstractCegarLoop]: Abstraction has 1557 states and 2178 transitions. [2020-10-12 10:33:40,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2178 transitions. [2020-10-12 10:33:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-12 10:33:40,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:40,665 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 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] [2020-10-12 10:33:40,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:33:40,666 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:40,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:40,666 INFO L82 PathProgramCache]: Analyzing trace with hash 197444109, now seen corresponding path program 1 times [2020-10-12 10:33:40,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:40,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466612258] [2020-10-12 10:33:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:40,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:40,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:40,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:40,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:40,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-12 10:33:40,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:33:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-12 10:33:40,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 10:33:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 10:33:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:40,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:40,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:40,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:40,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:40,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:40,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:40,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-12 10:33:41,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466612258] [2020-10-12 10:33:41,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:41,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:33:41,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555195870] [2020-10-12 10:33:41,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:33:41,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:41,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:33:41,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:41,021 INFO L87 Difference]: Start difference. First operand 1557 states and 2178 transitions. Second operand 3 states. [2020-10-12 10:33:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:41,091 INFO L93 Difference]: Finished difference Result 4331 states and 6116 transitions. [2020-10-12 10:33:41,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:33:41,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-10-12 10:33:41,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:41,105 INFO L225 Difference]: With dead ends: 4331 [2020-10-12 10:33:41,106 INFO L226 Difference]: Without dead ends: 2789 [2020-10-12 10:33:41,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:33:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2020-10-12 10:33:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2787. [2020-10-12 10:33:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2787 states. [2020-10-12 10:33:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3941 transitions. [2020-10-12 10:33:41,199 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3941 transitions. Word has length 201 [2020-10-12 10:33:41,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:41,200 INFO L479 AbstractCegarLoop]: Abstraction has 2787 states and 3941 transitions. [2020-10-12 10:33:41,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:33:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3941 transitions. [2020-10-12 10:33:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-12 10:33:41,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:41,210 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 10:33:41,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:33:41,210 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:41,211 INFO L82 PathProgramCache]: Analyzing trace with hash -349816743, now seen corresponding path program 1 times [2020-10-12 10:33:41,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:41,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018956955] [2020-10-12 10:33:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 10:33:41,285 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 10:33:41,285 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:33:41,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:33:41,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:33:41 BoogieIcfgContainer [2020-10-12 10:33:41,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:33:41,328 INFO L168 Benchmark]: Toolchain (without parser) took 9960.89 ms. Allocated memory was 140.0 MB in the beginning and 432.0 MB in the end (delta: 292.0 MB). Free memory was 103.1 MB in the beginning and 383.6 MB in the end (delta: -280.5 MB). Peak memory consumption was 309.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:33:41,329 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 10:33:41,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.82 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 179.7 MB in the end (delta: -76.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:33:41,330 INFO L168 Benchmark]: Boogie Preprocessor took 62.36 ms. Allocated memory is still 203.9 MB. Free memory was 179.7 MB in the beginning and 176.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:33:41,331 INFO L168 Benchmark]: RCFGBuilder took 904.96 ms. Allocated memory is still 203.9 MB. Free memory was 176.2 MB in the beginning and 131.3 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-10-12 10:33:41,332 INFO L168 Benchmark]: TraceAbstraction took 8414.66 ms. Allocated memory was 203.9 MB in the beginning and 432.0 MB in the end (delta: 228.1 MB). Free memory was 130.7 MB in the beginning and 383.6 MB in the end (delta: -252.9 MB). Peak memory consumption was 273.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:33:41,335 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 571.82 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 179.7 MB in the end (delta: -76.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.36 ms. Allocated memory is still 203.9 MB. Free memory was 179.7 MB in the beginning and 176.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 904.96 ms. Allocated memory is still 203.9 MB. Free memory was 176.2 MB in the beginning and 131.3 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8414.66 ms. Allocated memory was 203.9 MB in the beginning and 432.0 MB in the end (delta: 228.1 MB). Free memory was 130.7 MB in the beginning and 383.6 MB in the end (delta: -252.9 MB). Peak memory consumption was 273.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 607]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 355. Possible FailurePath: [L616] int __retres1 ; [L620] CALL ssl3_connect() [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y = __VERIFIER_nondet_int(); [L63] int __retres59 ; [L66] s__state = 12292 [L67] blastFlag = 0 [L68] tmp = __VERIFIER_nondet_int() [L69] cb = 0 [L70] ret = -1 [L71] skip = 0 [L72] tmp___0 = 0 [L73] COND TRUE s__info_callback != 0 [L74] cb = s__info_callback [L82] s__in_handshake = s__in_handshake + 1 [L83] COND FALSE !(tmp___1 - 12288) [L93] COND TRUE 1 [L95] state = s__state [L96] COND TRUE s__state == 12292 [L199] s__new_session = 1 [L200] s__state = 4096 [L201] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L206] s__server = 0 [L207] COND TRUE cb != 0 [L212] COND FALSE !(s__version - 65280 != 768) [L218] s__type = 4096 [L219] COND FALSE !(s__init_buf___0 == 0) [L237] COND FALSE !(! tmp___4) [L243] COND FALSE !(! tmp___5) [L249] s__state = 4368 [L250] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L251] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND TRUE s__state == 4368 [L255] s__shutdown = 0 [L256] ret = __VERIFIER_nondet_int() [L257] COND TRUE blastFlag == 0 [L258] blastFlag = 1 [L266] COND FALSE !(ret <= 0) [L271] s__state = 4384 [L272] s__init_num = 0 [L273] COND TRUE s__bbio != s__wbio [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND TRUE s__state == 4384 [L281] ret = __VERIFIER_nondet_int() [L282] COND TRUE blastFlag == 1 [L283] blastFlag = 2 [L287] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 4400 [L297] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND TRUE s__state == 4400 [L301] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L304] ret = __VERIFIER_nondet_int() [L305] COND TRUE blastFlag == 2 [L306] blastFlag = 3 [L310] COND FALSE !(ret <= 0) [L316] s__state = 4416 [L317] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND TRUE s__state == 4416 [L321] ret = __VERIFIER_nondet_int() [L322] COND TRUE blastFlag == 3 [L323] blastFlag = 4 [L327] COND FALSE !(ret <= 0) [L332] s__state = 4432 [L333] ag_X = (unsigned short)65535 [L334] s__init_num = 0 [L335] COND FALSE !(! tmp___6) [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND FALSE !(s__state == 4416) [L132] COND FALSE !(s__state == 4417) [L135] COND TRUE s__state == 4432 [L344] ret = __VERIFIER_nondet_int() [L345] COND FALSE !(blastFlag == 5) [L350] COND FALSE !(ret <= 0) [L355] s__state = ag_X ^ ag_Y [L356] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND TRUE s__state == 4368 [L255] s__shutdown = 0 [L256] ret = __VERIFIER_nondet_int() [L257] COND FALSE !(blastFlag == 0) [L260] COND TRUE blastFlag == 4 [L261] blastFlag = 5 [L266] COND FALSE !(ret <= 0) [L271] s__state = 4384 [L272] s__init_num = 0 [L273] COND TRUE s__bbio != s__wbio [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND TRUE s__state == 4384 [L281] ret = __VERIFIER_nondet_int() [L282] COND FALSE !(blastFlag == 1) [L287] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 4400 [L297] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND TRUE s__state == 4400 [L301] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L304] ret = __VERIFIER_nondet_int() [L305] COND FALSE !(blastFlag == 2) [L310] COND FALSE !(ret <= 0) [L316] s__state = 4416 [L317] s__init_num = 0 [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND TRUE s__state == 4416 [L321] ret = __VERIFIER_nondet_int() [L322] COND FALSE !(blastFlag == 3) [L327] COND FALSE !(ret <= 0) [L332] s__state = 4432 [L333] ag_X = (unsigned short)65535 [L334] s__init_num = 0 [L335] COND FALSE !(! tmp___6) [L565] COND FALSE !(! s__s3__tmp__reuse_message) [L594] skip = 0 [L93] COND TRUE 1 [L95] state = s__state [L96] COND FALSE !(s__state == 12292) [L99] COND FALSE !(s__state == 16384) [L102] COND FALSE !(s__state == 4096) [L105] COND FALSE !(s__state == 20480) [L108] COND FALSE !(s__state == 4099) [L111] COND FALSE !(s__state == 4368) [L114] COND FALSE !(s__state == 4369) [L117] COND FALSE !(s__state == 4384) [L120] COND FALSE !(s__state == 4385) [L123] COND FALSE !(s__state == 4400) [L126] COND FALSE !(s__state == 4401) [L129] COND FALSE !(s__state == 4416) [L132] COND FALSE !(s__state == 4417) [L135] COND TRUE s__state == 4432 [L344] ret = __VERIFIER_nondet_int() [L345] COND TRUE blastFlag == 5 [L607] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.2s, OverallIterations: 15, TraceHistogramMax: 11, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2649 SDtfs, 1017 SDslu, 1536 SDs, 0 SdLazy, 938 SolverSat, 215 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2787occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 295 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1839 NumberOfCodeBlocks, 1839 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1624 ConstructedInterpolants, 0 QuantifiedInterpolants, 467240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2994/2994 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...