/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_clnt.blast.04.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:31:28,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:31:28,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:31:28,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:31:28,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:31:28,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:31:28,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:31:28,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:31:28,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:31:28,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:31:28,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:31:28,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:31:28,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:31:28,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:31:28,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:31:28,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:31:28,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:31:28,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:31:28,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:31:28,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:31:28,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:31:28,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:31:28,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:31:28,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:31:28,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:31:28,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:31:28,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:31:28,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:31:28,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:31:28,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:31:28,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:31:28,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:31:28,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:31:28,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:31:28,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:31:28,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:31:28,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:31:28,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:31:28,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:31:28,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:31:28,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:31:28,397 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 [2020-10-13 15:31:28,421 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:31:28,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:31:28,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:31:28,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:31:28,423 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:31:28,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:31:28,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:31:28,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:31:28,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:31:28,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:31:28,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:31:28,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:31:28,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:31:28,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:31:28,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:31:28,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:31:28,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:31:28,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:31:28,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:31:28,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:31:28,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:31:28,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:31:28,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:31:28,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:31:28,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:31:28,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:31:28,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:31:28,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:31:28,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:31:28,428 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:31:28,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:31:28,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:31:28,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:31:28,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:31:28,768 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:31:28,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_clnt.blast.04.i.cil-1.c [2020-10-13 15:31:28,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b2d39b07/5a9f4d0e5fc74570b0070583ac13039f/FLAG02c45ca3d [2020-10-13 15:31:29,473 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:31:29,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_clnt.blast.04.i.cil-1.c [2020-10-13 15:31:29,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b2d39b07/5a9f4d0e5fc74570b0070583ac13039f/FLAG02c45ca3d [2020-10-13 15:31:29,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b2d39b07/5a9f4d0e5fc74570b0070583ac13039f [2020-10-13 15:31:29,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:31:29,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:31:29,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:31:29,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:31:29,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:31:29,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:31:29" (1/1) ... [2020-10-13 15:31:29,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d1a539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:29, skipping insertion in model container [2020-10-13 15:31:29,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:31:29" (1/1) ... [2020-10-13 15:31:29,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:31:29,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:31:30,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:31:30,492 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:31:30,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:31:30,772 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:31:30,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:30 WrapperNode [2020-10-13 15:31:30,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:31:30,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:31:30,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:31:30,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:31:30,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:30" (1/1) ... [2020-10-13 15:31:30,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:30" (1/1) ... [2020-10-13 15:31:30,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:30" (1/1) ... [2020-10-13 15:31:30,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:30" (1/1) ... [2020-10-13 15:31:30,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:30" (1/1) ... [2020-10-13 15:31:30,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:30" (1/1) ... [2020-10-13 15:31:30,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:30" (1/1) ... [2020-10-13 15:31:30,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:31:30,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:31:30,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:31:30,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:31:30,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:30" (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 [2020-10-13 15:31:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:31:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:31:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2020-10-13 15:31:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2020-10-13 15:31:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:31:31,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-13 15:31:31,065 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:31:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:31:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:31:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:31:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:31:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:31:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:31:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:31:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:31:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:31:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2020-10-13 15:31:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:31:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-13 15:31:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2020-10-13 15:31:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:31:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:31:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:31:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:31:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:31:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:31:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:31:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:31:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:31:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:31:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:31:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:31:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:31:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:31:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:31:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:31:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:31:31,545 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:31:32,225 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-13 15:31:32,226 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-13 15:31:32,249 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:31:32,249 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:31:32,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:31:32 BoogieIcfgContainer [2020-10-13 15:31:32,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:31:32,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:31:32,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:31:32,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:31:32,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:31:29" (1/3) ... [2020-10-13 15:31:32,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6695366c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:31:32, skipping insertion in model container [2020-10-13 15:31:32,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:30" (2/3) ... [2020-10-13 15:31:32,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6695366c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:31:32, skipping insertion in model container [2020-10-13 15:31:32,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:31:32" (3/3) ... [2020-10-13 15:31:32,264 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.04.i.cil-1.c [2020-10-13 15:31:32,275 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:31:32,284 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:31:32,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:31:32,325 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:31:32,325 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:31:32,325 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:31:32,325 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:31:32,326 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:31:32,326 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:31:32,326 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:31:32,326 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:31:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-10-13 15:31:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 15:31:32,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:32,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:32,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:32,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1671955434, now seen corresponding path program 1 times [2020-10-13 15:31:32,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:32,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796666787] [2020-10-13 15:31:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:32,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:32,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:33,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:33,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:33,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 15:31:33,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:33,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-10-13 15:31:33,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:31:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:31:33,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:31:33,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:33,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:33,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:33,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:33,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:33,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:31:33,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:33,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:33,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:33,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:31:33,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796666787] [2020-10-13 15:31:33,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:33,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:33,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696108292] [2020-10-13 15:31:33,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:33,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:33,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:33,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:33,835 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 5 states. [2020-10-13 15:31:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:34,582 INFO L93 Difference]: Finished difference Result 267 states and 442 transitions. [2020-10-13 15:31:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:34,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-13 15:31:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:34,597 INFO L225 Difference]: With dead ends: 267 [2020-10-13 15:31:34,597 INFO L226 Difference]: Without dead ends: 122 [2020-10-13 15:31:34,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:31:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-13 15:31:34,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-13 15:31:34,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 15:31:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 178 transitions. [2020-10-13 15:31:34,654 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 178 transitions. Word has length 30 [2020-10-13 15:31:34,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:34,658 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 178 transitions. [2020-10-13 15:31:34,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:34,659 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 178 transitions. [2020-10-13 15:31:34,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 15:31:34,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:34,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:34,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:31:34,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:34,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:34,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1881881790, now seen corresponding path program 1 times [2020-10-13 15:31:34,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:34,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164841414] [2020-10-13 15:31:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:36,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:37,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:37,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 15:31:37,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:31:37,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3241 [2020-10-13 15:31:37,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 15:31:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:31:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:31:38,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:38,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:38,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:38,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:31:38,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:31:38,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164841414] [2020-10-13 15:31:38,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:38,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:31:38,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182286202] [2020-10-13 15:31:38,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:31:38,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:38,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:31:38,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:31:38,135 INFO L87 Difference]: Start difference. First operand 121 states and 178 transitions. Second operand 6 states. [2020-10-13 15:31:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:39,031 INFO L93 Difference]: Finished difference Result 259 states and 385 transitions. [2020-10-13 15:31:39,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:31:39,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-13 15:31:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:39,034 INFO L225 Difference]: With dead ends: 259 [2020-10-13 15:31:39,035 INFO L226 Difference]: Without dead ends: 154 [2020-10-13 15:31:39,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:31:39,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-13 15:31:39,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 138. [2020-10-13 15:31:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-13 15:31:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 206 transitions. [2020-10-13 15:31:39,063 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 206 transitions. Word has length 44 [2020-10-13 15:31:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:39,063 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 206 transitions. [2020-10-13 15:31:39,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:31:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 206 transitions. [2020-10-13 15:31:39,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 15:31:39,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:39,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-13 15:31:39,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:31:39,068 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:39,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:39,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1265144394, now seen corresponding path program 1 times [2020-10-13 15:31:39,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:39,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108788026] [2020-10-13 15:31:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:39,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:40,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:40,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 15:31:40,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-10-13 15:31:40,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:31:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 15:31:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:31:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:40,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:40,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:40,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:40,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:31:40,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 15:31:40,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108788026] [2020-10-13 15:31:40,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:40,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:40,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235607590] [2020-10-13 15:31:40,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:40,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:40,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:40,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:40,147 INFO L87 Difference]: Start difference. First operand 138 states and 206 transitions. Second operand 5 states. [2020-10-13 15:31:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:40,863 INFO L93 Difference]: Finished difference Result 295 states and 445 transitions. [2020-10-13 15:31:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:40,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-13 15:31:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:40,866 INFO L225 Difference]: With dead ends: 295 [2020-10-13 15:31:40,867 INFO L226 Difference]: Without dead ends: 173 [2020-10-13 15:31:40,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:31:40,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-13 15:31:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 156. [2020-10-13 15:31:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-13 15:31:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 236 transitions. [2020-10-13 15:31:40,892 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 236 transitions. Word has length 59 [2020-10-13 15:31:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:40,893 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 236 transitions. [2020-10-13 15:31:40,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 236 transitions. [2020-10-13 15:31:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 15:31:40,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:40,900 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:40,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:31:40,901 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:40,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:40,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1983289988, now seen corresponding path program 1 times [2020-10-13 15:31:40,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:40,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749217852] [2020-10-13 15:31:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:40,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:41,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:42,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 15:31:42,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:31:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1094 [2020-10-13 15:31:42,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:31:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:31:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:31:42,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:42,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:42,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:42,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:42,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:31:42,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:42,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:42,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:42,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:42,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:31:42,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749217852] [2020-10-13 15:31:42,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:42,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:42,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988697025] [2020-10-13 15:31:42,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:42,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:42,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:42,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:42,196 INFO L87 Difference]: Start difference. First operand 156 states and 236 transitions. Second operand 5 states. [2020-10-13 15:31:43,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:43,077 INFO L93 Difference]: Finished difference Result 390 states and 595 transitions. [2020-10-13 15:31:43,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:43,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-13 15:31:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:43,083 INFO L225 Difference]: With dead ends: 390 [2020-10-13 15:31:43,083 INFO L226 Difference]: Without dead ends: 250 [2020-10-13 15:31:43,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:31:43,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-13 15:31:43,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 181. [2020-10-13 15:31:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 15:31:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 279 transitions. [2020-10-13 15:31:43,108 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 279 transitions. Word has length 77 [2020-10-13 15:31:43,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:43,109 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 279 transitions. [2020-10-13 15:31:43,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 279 transitions. [2020-10-13 15:31:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 15:31:43,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:43,113 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:43,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:31:43,114 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:43,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:43,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1849276482, now seen corresponding path program 1 times [2020-10-13 15:31:43,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:43,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965794330] [2020-10-13 15:31:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:43,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:45,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:45,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 15:31:45,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:45,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1934 [2020-10-13 15:31:45,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:31:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:31:45,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:45,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:45,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:45,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:45,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:45,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:31:45,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:31:45,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965794330] [2020-10-13 15:31:45,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:45,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:45,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711743271] [2020-10-13 15:31:45,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:45,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:45,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:45,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:45,188 INFO L87 Difference]: Start difference. First operand 181 states and 279 transitions. Second operand 5 states. [2020-10-13 15:31:45,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:45,987 INFO L93 Difference]: Finished difference Result 389 states and 604 transitions. [2020-10-13 15:31:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:45,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-13 15:31:45,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:45,990 INFO L225 Difference]: With dead ends: 389 [2020-10-13 15:31:45,990 INFO L226 Difference]: Without dead ends: 224 [2020-10-13 15:31:45,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:31:45,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-13 15:31:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 201. [2020-10-13 15:31:46,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-13 15:31:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 313 transitions. [2020-10-13 15:31:46,009 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 313 transitions. Word has length 77 [2020-10-13 15:31:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:46,010 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 313 transitions. [2020-10-13 15:31:46,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 313 transitions. [2020-10-13 15:31:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:31:46,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:46,012 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:46,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:31:46,012 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:46,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1347761717, now seen corresponding path program 1 times [2020-10-13 15:31:46,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:46,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604046229] [2020-10-13 15:31:46,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:46,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:46,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 15:31:46,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:31:46,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-13 15:31:46,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:46,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:46,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:31:46,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:31:46,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:31:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:46,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:46,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:31:46,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:31:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:31:46,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604046229] [2020-10-13 15:31:46,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:46,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:46,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532463150] [2020-10-13 15:31:46,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:46,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:46,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:46,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:46,973 INFO L87 Difference]: Start difference. First operand 201 states and 313 transitions. Second operand 5 states. [2020-10-13 15:31:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:47,917 INFO L93 Difference]: Finished difference Result 450 states and 700 transitions. [2020-10-13 15:31:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:47,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-13 15:31:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:47,920 INFO L225 Difference]: With dead ends: 450 [2020-10-13 15:31:47,920 INFO L226 Difference]: Without dead ends: 265 [2020-10-13 15:31:47,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:31:47,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-13 15:31:47,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 202. [2020-10-13 15:31:47,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-13 15:31:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 314 transitions. [2020-10-13 15:31:47,929 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 314 transitions. Word has length 78 [2020-10-13 15:31:47,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:47,929 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 314 transitions. [2020-10-13 15:31:47,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:47,929 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 314 transitions. [2020-10-13 15:31:47,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:31:47,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:47,931 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:47,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:31:47,931 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:47,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:47,932 INFO L82 PathProgramCache]: Analyzing trace with hash -789594059, now seen corresponding path program 1 times [2020-10-13 15:31:47,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:47,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794039612] [2020-10-13 15:31:47,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:48,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:49,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:52,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:52,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:31:52,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:31:52,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4038 [2020-10-13 15:31:52,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:52,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:31:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:31:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:52,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:52,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:52,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:52,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:52,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:31:52,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:52,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:31:52,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794039612] [2020-10-13 15:31:52,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:52,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:52,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269022826] [2020-10-13 15:31:52,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:52,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:52,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:52,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:52,093 INFO L87 Difference]: Start difference. First operand 202 states and 314 transitions. Second operand 5 states. [2020-10-13 15:31:52,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:52,872 INFO L93 Difference]: Finished difference Result 451 states and 700 transitions. [2020-10-13 15:31:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:52,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:31:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:52,876 INFO L225 Difference]: With dead ends: 451 [2020-10-13 15:31:52,876 INFO L226 Difference]: Without dead ends: 265 [2020-10-13 15:31:52,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:31:52,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-13 15:31:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 202. [2020-10-13 15:31:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-13 15:31:52,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 313 transitions. [2020-10-13 15:31:52,886 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 313 transitions. Word has length 95 [2020-10-13 15:31:52,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:52,886 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 313 transitions. [2020-10-13 15:31:52,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:52,886 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 313 transitions. [2020-10-13 15:31:52,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:31:52,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:52,888 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:52,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:31:52,888 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:52,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:52,888 INFO L82 PathProgramCache]: Analyzing trace with hash -541447565, now seen corresponding path program 1 times [2020-10-13 15:31:52,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:52,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594097469] [2020-10-13 15:31:52,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:53,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:54,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:31:54,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:54,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-13 15:31:54,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:31:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 15:31:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:31:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:54,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:54,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:54,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:54,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:54,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:54,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:31:54,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594097469] [2020-10-13 15:31:54,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:54,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:54,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631069179] [2020-10-13 15:31:54,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:54,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:54,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:54,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:54,085 INFO L87 Difference]: Start difference. First operand 202 states and 313 transitions. Second operand 5 states. [2020-10-13 15:31:55,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:55,002 INFO L93 Difference]: Finished difference Result 436 states and 680 transitions. [2020-10-13 15:31:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:55,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:31:55,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:55,007 INFO L225 Difference]: With dead ends: 436 [2020-10-13 15:31:55,008 INFO L226 Difference]: Without dead ends: 250 [2020-10-13 15:31:55,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:31:55,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-13 15:31:55,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 224. [2020-10-13 15:31:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-13 15:31:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 351 transitions. [2020-10-13 15:31:55,027 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 351 transitions. Word has length 95 [2020-10-13 15:31:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:55,028 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 351 transitions. [2020-10-13 15:31:55,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 351 transitions. [2020-10-13 15:31:55,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:31:55,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:55,030 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:55,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:31:55,031 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:55,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:55,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1222656569, now seen corresponding path program 1 times [2020-10-13 15:31:55,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:55,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988200376] [2020-10-13 15:31:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:55,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:56,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:56,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:31:56,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:31:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-10-13 15:31:56,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:31:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:31:56,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:56,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:56,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:56,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:56,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:56,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:56,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:31:56,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:31:56,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988200376] [2020-10-13 15:31:56,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:56,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:56,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997235313] [2020-10-13 15:31:56,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:56,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:56,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:56,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:56,413 INFO L87 Difference]: Start difference. First operand 224 states and 351 transitions. Second operand 5 states. [2020-10-13 15:31:57,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:57,264 INFO L93 Difference]: Finished difference Result 495 states and 774 transitions. [2020-10-13 15:31:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:57,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:31:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:57,267 INFO L225 Difference]: With dead ends: 495 [2020-10-13 15:31:57,267 INFO L226 Difference]: Without dead ends: 287 [2020-10-13 15:31:57,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:31:57,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-13 15:31:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 224. [2020-10-13 15:31:57,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-13 15:31:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 350 transitions. [2020-10-13 15:31:57,276 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 350 transitions. Word has length 98 [2020-10-13 15:31:57,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:57,277 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 350 transitions. [2020-10-13 15:31:57,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 350 transitions. [2020-10-13 15:31:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 15:31:57,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:57,278 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:31:57,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:31:57,279 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:57,279 INFO L82 PathProgramCache]: Analyzing trace with hash -372871544, now seen corresponding path program 1 times [2020-10-13 15:31:57,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:57,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115949748] [2020-10-13 15:31:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:58,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:58,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 15:31:58,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:31:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-10-13 15:31:58,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:31:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:31:58,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:58,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:58,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:58,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:58,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:58,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:31:58,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:58,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:58,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:58,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:58,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:31:58,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115949748] [2020-10-13 15:31:58,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:58,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:58,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706934970] [2020-10-13 15:31:58,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:58,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:58,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:58,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:58,421 INFO L87 Difference]: Start difference. First operand 224 states and 350 transitions. Second operand 5 states. [2020-10-13 15:31:59,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:59,200 INFO L93 Difference]: Finished difference Result 492 states and 768 transitions. [2020-10-13 15:31:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:59,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-13 15:31:59,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:59,204 INFO L225 Difference]: With dead ends: 492 [2020-10-13 15:31:59,204 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:31:59,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:31:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:31:59,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 224. [2020-10-13 15:31:59,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-13 15:31:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 349 transitions. [2020-10-13 15:31:59,213 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 349 transitions. Word has length 99 [2020-10-13 15:31:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:59,214 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 349 transitions. [2020-10-13 15:31:59,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 349 transitions. [2020-10-13 15:31:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:31:59,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:59,215 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:31:59,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:31:59,216 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:59,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:59,216 INFO L82 PathProgramCache]: Analyzing trace with hash -731965084, now seen corresponding path program 1 times [2020-10-13 15:31:59,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:59,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569956686] [2020-10-13 15:31:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:59,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:59,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:01,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:01,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:32:01,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:01,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2426 [2020-10-13 15:32:01,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 15:32:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:32:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:01,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:01,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:01,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:01,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:01,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:01,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:32:01,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569956686] [2020-10-13 15:32:01,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:01,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:01,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261629872] [2020-10-13 15:32:01,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:01,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:01,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:01,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:01,764 INFO L87 Difference]: Start difference. First operand 224 states and 349 transitions. Second operand 5 states. [2020-10-13 15:32:02,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:02,684 INFO L93 Difference]: Finished difference Result 526 states and 821 transitions. [2020-10-13 15:32:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:02,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:32:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:02,687 INFO L225 Difference]: With dead ends: 526 [2020-10-13 15:32:02,687 INFO L226 Difference]: Without dead ends: 318 [2020-10-13 15:32:02,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:02,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-13 15:32:02,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 249. [2020-10-13 15:32:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 15:32:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 392 transitions. [2020-10-13 15:32:02,697 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 392 transitions. Word has length 102 [2020-10-13 15:32:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:02,698 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 392 transitions. [2020-10-13 15:32:02,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 392 transitions. [2020-10-13 15:32:02,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:32:02,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:02,700 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:32:02,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:32:02,700 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:02,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:02,700 INFO L82 PathProgramCache]: Analyzing trace with hash -865978590, now seen corresponding path program 1 times [2020-10-13 15:32:02,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:02,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407948871] [2020-10-13 15:32:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:03,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:04,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:04,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:32:04,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1735 [2020-10-13 15:32:04,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:04,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 15:32:04,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:32:04,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:04,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:04,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:04,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:04,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:04,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:32:04,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407948871] [2020-10-13 15:32:04,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:04,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:04,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111922286] [2020-10-13 15:32:04,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:04,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:04,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:04,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:04,550 INFO L87 Difference]: Start difference. First operand 249 states and 392 transitions. Second operand 5 states. [2020-10-13 15:32:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:05,493 INFO L93 Difference]: Finished difference Result 575 states and 906 transitions. [2020-10-13 15:32:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:05,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:32:05,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:05,497 INFO L225 Difference]: With dead ends: 575 [2020-10-13 15:32:05,497 INFO L226 Difference]: Without dead ends: 342 [2020-10-13 15:32:05,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:05,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-13 15:32:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 248. [2020-10-13 15:32:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-13 15:32:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 391 transitions. [2020-10-13 15:32:05,512 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 391 transitions. Word has length 102 [2020-10-13 15:32:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:05,512 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 391 transitions. [2020-10-13 15:32:05,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 391 transitions. [2020-10-13 15:32:05,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:32:05,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:05,514 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:05,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:32:05,514 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:05,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:05,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1220766891, now seen corresponding path program 1 times [2020-10-13 15:32:05,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:05,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872218518] [2020-10-13 15:32:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:05,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:06,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:07,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:07,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:32:07,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-10-13 15:32:07,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 15:32:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:32:07,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:07,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:07,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:07,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:07,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:07,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:07,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:07,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:07,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:07,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:07,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:32:07,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872218518] [2020-10-13 15:32:07,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:07,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:07,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971680534] [2020-10-13 15:32:07,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:07,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:07,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:07,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:07,398 INFO L87 Difference]: Start difference. First operand 248 states and 391 transitions. Second operand 5 states. [2020-10-13 15:32:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:08,342 INFO L93 Difference]: Finished difference Result 569 states and 899 transitions. [2020-10-13 15:32:08,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:08,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:32:08,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:08,347 INFO L225 Difference]: With dead ends: 569 [2020-10-13 15:32:08,347 INFO L226 Difference]: Without dead ends: 337 [2020-10-13 15:32:08,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:08,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-13 15:32:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2020-10-13 15:32:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-13 15:32:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 433 transitions. [2020-10-13 15:32:08,361 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 433 transitions. Word has length 103 [2020-10-13 15:32:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:08,361 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 433 transitions. [2020-10-13 15:32:08,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:08,361 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 433 transitions. [2020-10-13 15:32:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:32:08,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:08,365 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:08,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:32:08,366 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:08,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:08,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1080218281, now seen corresponding path program 1 times [2020-10-13 15:32:08,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:08,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352016803] [2020-10-13 15:32:08,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:32:10,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1714 [2020-10-13 15:32:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 15:32:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:32:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:10,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:10,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:10,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:10,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:32:10,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352016803] [2020-10-13 15:32:10,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:10,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:10,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969523614] [2020-10-13 15:32:10,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:10,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:10,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:10,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:10,188 INFO L87 Difference]: Start difference. First operand 272 states and 433 transitions. Second operand 5 states. [2020-10-13 15:32:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:11,046 INFO L93 Difference]: Finished difference Result 592 states and 940 transitions. [2020-10-13 15:32:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:11,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:32:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:11,050 INFO L225 Difference]: With dead ends: 592 [2020-10-13 15:32:11,050 INFO L226 Difference]: Without dead ends: 336 [2020-10-13 15:32:11,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-13 15:32:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 247. [2020-10-13 15:32:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-13 15:32:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 390 transitions. [2020-10-13 15:32:11,060 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 390 transitions. Word has length 103 [2020-10-13 15:32:11,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:11,060 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 390 transitions. [2020-10-13 15:32:11,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:11,061 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 390 transitions. [2020-10-13 15:32:11,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:32:11,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:11,062 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:32:11,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:32:11,063 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:11,063 INFO L82 PathProgramCache]: Analyzing trace with hash -990176365, now seen corresponding path program 1 times [2020-10-13 15:32:11,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:11,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141419642] [2020-10-13 15:32:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:12,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:12,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:32:12,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1739 [2020-10-13 15:32:12,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 15:32:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:32:12,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:12,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:12,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:12,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:12,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:12,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:12,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:12,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:32:12,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141419642] [2020-10-13 15:32:12,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:12,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:12,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866099760] [2020-10-13 15:32:12,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:12,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:12,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:12,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:12,904 INFO L87 Difference]: Start difference. First operand 247 states and 390 transitions. Second operand 5 states. [2020-10-13 15:32:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:13,793 INFO L93 Difference]: Finished difference Result 572 states and 903 transitions. [2020-10-13 15:32:13,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:13,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:32:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:13,796 INFO L225 Difference]: With dead ends: 572 [2020-10-13 15:32:13,796 INFO L226 Difference]: Without dead ends: 341 [2020-10-13 15:32:13,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:13,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-13 15:32:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 272. [2020-10-13 15:32:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-13 15:32:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 433 transitions. [2020-10-13 15:32:13,806 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 433 transitions. Word has length 108 [2020-10-13 15:32:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:13,807 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 433 transitions. [2020-10-13 15:32:13,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 433 transitions. [2020-10-13 15:32:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:32:13,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:13,808 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:32:13,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:32:13,809 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:13,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1124189871, now seen corresponding path program 1 times [2020-10-13 15:32:13,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:13,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73579635] [2020-10-13 15:32:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:13,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:14,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:15,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:15,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:32:15,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:15,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1872 [2020-10-13 15:32:15,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:15,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:15,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 15:32:15,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:32:15,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:15,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:15,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:15,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:15,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:15,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:15,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:32:15,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:15,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:32:15,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73579635] [2020-10-13 15:32:15,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:15,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:15,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93332277] [2020-10-13 15:32:15,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:15,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:15,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:15,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:15,820 INFO L87 Difference]: Start difference. First operand 272 states and 433 transitions. Second operand 5 states. [2020-10-13 15:32:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:16,759 INFO L93 Difference]: Finished difference Result 622 states and 989 transitions. [2020-10-13 15:32:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:16,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:32:16,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:16,762 INFO L225 Difference]: With dead ends: 622 [2020-10-13 15:32:16,762 INFO L226 Difference]: Without dead ends: 366 [2020-10-13 15:32:16,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:16,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-13 15:32:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 272. [2020-10-13 15:32:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-13 15:32:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 433 transitions. [2020-10-13 15:32:16,772 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 433 transitions. Word has length 108 [2020-10-13 15:32:16,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:16,773 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 433 transitions. [2020-10-13 15:32:16,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 433 transitions. [2020-10-13 15:32:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:32:16,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:16,775 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:16,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:32:16,775 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash -635382010, now seen corresponding path program 1 times [2020-10-13 15:32:16,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:16,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121588301] [2020-10-13 15:32:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:18,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:18,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:32:18,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:18,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1593 [2020-10-13 15:32:18,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 15:32:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:32:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:18,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:18,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:18,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:18,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:18,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:18,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:18,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:18,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:18,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:18,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:18,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:32:18,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121588301] [2020-10-13 15:32:18,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:18,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:18,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243024056] [2020-10-13 15:32:18,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:18,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:18,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:18,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:18,474 INFO L87 Difference]: Start difference. First operand 272 states and 433 transitions. Second operand 5 states. [2020-10-13 15:32:19,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:19,327 INFO L93 Difference]: Finished difference Result 617 states and 983 transitions. [2020-10-13 15:32:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:19,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:32:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:19,335 INFO L225 Difference]: With dead ends: 617 [2020-10-13 15:32:19,335 INFO L226 Difference]: Without dead ends: 361 [2020-10-13 15:32:19,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-13 15:32:19,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 273. [2020-10-13 15:32:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-13 15:32:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 434 transitions. [2020-10-13 15:32:19,346 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 434 transitions. Word has length 109 [2020-10-13 15:32:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:19,346 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 434 transitions. [2020-10-13 15:32:19,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 434 transitions. [2020-10-13 15:32:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:32:19,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:19,348 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:19,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:32:19,348 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:19,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash -494833400, now seen corresponding path program 1 times [2020-10-13 15:32:19,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:19,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007311698] [2020-10-13 15:32:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:21,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:21,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:32:21,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:21,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1632 [2020-10-13 15:32:21,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 15:32:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:32:21,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:21,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:21,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:21,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:21,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:21,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:21,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:32:21,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007311698] [2020-10-13 15:32:21,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:21,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:21,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566809967] [2020-10-13 15:32:21,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:21,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:21,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:21,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:21,112 INFO L87 Difference]: Start difference. First operand 273 states and 434 transitions. Second operand 5 states. [2020-10-13 15:32:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:22,020 INFO L93 Difference]: Finished difference Result 594 states and 942 transitions. [2020-10-13 15:32:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:22,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:32:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:22,028 INFO L225 Difference]: With dead ends: 594 [2020-10-13 15:32:22,028 INFO L226 Difference]: Without dead ends: 337 [2020-10-13 15:32:22,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-13 15:32:22,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 248. [2020-10-13 15:32:22,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-13 15:32:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 391 transitions. [2020-10-13 15:32:22,038 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 391 transitions. Word has length 109 [2020-10-13 15:32:22,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:22,038 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 391 transitions. [2020-10-13 15:32:22,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 391 transitions. [2020-10-13 15:32:22,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:32:22,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:22,040 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:32:22,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:32:22,040 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:22,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:22,041 INFO L82 PathProgramCache]: Analyzing trace with hash 855127362, now seen corresponding path program 1 times [2020-10-13 15:32:22,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:22,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355742871] [2020-10-13 15:32:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:22,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:27,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:27,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:32:27,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:27,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 15:32:27,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:32:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:32:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:27,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:27,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:27,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:27,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:27,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:32:27,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355742871] [2020-10-13 15:32:27,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:27,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:27,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282402674] [2020-10-13 15:32:27,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:27,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:27,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:27,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:27,206 INFO L87 Difference]: Start difference. First operand 248 states and 391 transitions. Second operand 5 states. [2020-10-13 15:32:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:27,952 INFO L93 Difference]: Finished difference Result 542 states and 852 transitions. [2020-10-13 15:32:27,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:27,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:32:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:27,955 INFO L225 Difference]: With dead ends: 542 [2020-10-13 15:32:27,955 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 15:32:27,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:27,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 15:32:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 261. [2020-10-13 15:32:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:32:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 414 transitions. [2020-10-13 15:32:27,964 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 414 transitions. Word has length 113 [2020-10-13 15:32:27,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:27,965 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 414 transitions. [2020-10-13 15:32:27,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 414 transitions. [2020-10-13 15:32:27,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:32:27,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:27,967 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:32:27,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:32:27,967 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:27,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:27,968 INFO L82 PathProgramCache]: Analyzing trace with hash -974780237, now seen corresponding path program 1 times [2020-10-13 15:32:27,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:27,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327237851] [2020-10-13 15:32:27,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:28,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:28,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:33,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:33,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:32:33,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:33,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 15:32:33,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:32:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:32:33,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:33,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:33,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:33,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:33,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:33,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:32:33,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327237851] [2020-10-13 15:32:33,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:33,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:33,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759217511] [2020-10-13 15:32:33,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:33,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:33,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:33,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:33,143 INFO L87 Difference]: Start difference. First operand 261 states and 414 transitions. Second operand 5 states. [2020-10-13 15:32:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:33,890 INFO L93 Difference]: Finished difference Result 553 states and 872 transitions. [2020-10-13 15:32:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:33,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:32:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:33,894 INFO L225 Difference]: With dead ends: 553 [2020-10-13 15:32:33,894 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:32:33,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:33,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:32:33,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 262. [2020-10-13 15:32:33,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-13 15:32:33,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 415 transitions. [2020-10-13 15:32:33,904 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 415 transitions. Word has length 114 [2020-10-13 15:32:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:33,904 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 415 transitions. [2020-10-13 15:32:33,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 415 transitions. [2020-10-13 15:32:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:32:33,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:33,906 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:32:33,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:32:33,906 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:33,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:33,907 INFO L82 PathProgramCache]: Analyzing trace with hash -88332800, now seen corresponding path program 1 times [2020-10-13 15:32:33,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:33,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905518816] [2020-10-13 15:32:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:33,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:34,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:38,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:32:38,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:32:38,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:32:38,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:38,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:38,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:32:38,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:32:38,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:39,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:39,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:39,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:39,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:39,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:32:39,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905518816] [2020-10-13 15:32:39,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:39,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:39,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249650793] [2020-10-13 15:32:39,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:39,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:39,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:39,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:39,029 INFO L87 Difference]: Start difference. First operand 262 states and 415 transitions. Second operand 5 states. [2020-10-13 15:32:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:39,750 INFO L93 Difference]: Finished difference Result 554 states and 872 transitions. [2020-10-13 15:32:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:39,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:32:39,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:39,753 INFO L225 Difference]: With dead ends: 554 [2020-10-13 15:32:39,753 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:32:39,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:32:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 263. [2020-10-13 15:32:39,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:32:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 416 transitions. [2020-10-13 15:32:39,761 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 416 transitions. Word has length 114 [2020-10-13 15:32:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:39,762 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 416 transitions. [2020-10-13 15:32:39,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 416 transitions. [2020-10-13 15:32:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:32:39,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:39,764 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:32:39,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:32:39,764 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:39,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:39,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1741473457, now seen corresponding path program 1 times [2020-10-13 15:32:39,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:39,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177122724] [2020-10-13 15:32:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:44,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:32:44,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 15:32:44,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:32:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:32:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:44,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:44,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:44,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:44,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:44,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:44,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:44,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:44,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:44,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:44,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:32:44,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177122724] [2020-10-13 15:32:44,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:44,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:44,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271730483] [2020-10-13 15:32:44,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:44,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:44,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:44,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:44,931 INFO L87 Difference]: Start difference. First operand 263 states and 416 transitions. Second operand 5 states. [2020-10-13 15:32:45,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:45,682 INFO L93 Difference]: Finished difference Result 553 states and 870 transitions. [2020-10-13 15:32:45,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:45,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:32:45,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:45,687 INFO L225 Difference]: With dead ends: 553 [2020-10-13 15:32:45,688 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:32:45,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:32:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 264. [2020-10-13 15:32:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-13 15:32:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 417 transitions. [2020-10-13 15:32:45,696 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 417 transitions. Word has length 115 [2020-10-13 15:32:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:45,696 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 417 transitions. [2020-10-13 15:32:45,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 417 transitions. [2020-10-13 15:32:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:32:45,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:45,698 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:32:45,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:32:45,698 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:45,699 INFO L82 PathProgramCache]: Analyzing trace with hash 398497765, now seen corresponding path program 1 times [2020-10-13 15:32:45,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:45,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706682534] [2020-10-13 15:32:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:45,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:46,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:47,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:47,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:32:47,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:47,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2175 [2020-10-13 15:32:47,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 15:32:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:32:47,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:47,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:47,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:47,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:47,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:32:47,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:32:47,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706682534] [2020-10-13 15:32:47,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:47,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:47,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789352599] [2020-10-13 15:32:47,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:47,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:47,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:47,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:47,972 INFO L87 Difference]: Start difference. First operand 264 states and 417 transitions. Second operand 5 states. [2020-10-13 15:32:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:48,867 INFO L93 Difference]: Finished difference Result 605 states and 956 transitions. [2020-10-13 15:32:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:48,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:32:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:48,870 INFO L225 Difference]: With dead ends: 605 [2020-10-13 15:32:48,870 INFO L226 Difference]: Without dead ends: 357 [2020-10-13 15:32:48,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-13 15:32:48,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 288. [2020-10-13 15:32:48,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-13 15:32:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 459 transitions. [2020-10-13 15:32:48,880 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 459 transitions. Word has length 116 [2020-10-13 15:32:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:48,881 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 459 transitions. [2020-10-13 15:32:48,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 459 transitions. [2020-10-13 15:32:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:32:48,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:48,883 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 15:32:48,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:32:48,883 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:48,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:48,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1915827259, now seen corresponding path program 1 times [2020-10-13 15:32:48,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:48,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909106878] [2020-10-13 15:32:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:51,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:51,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:32:51,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2169 [2020-10-13 15:32:51,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 15:32:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:32:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:51,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:51,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:51,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:51,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:51,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:51,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:51,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:51,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 15:32:51,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909106878] [2020-10-13 15:32:51,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:51,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:51,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338622559] [2020-10-13 15:32:51,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:51,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:51,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:51,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:51,158 INFO L87 Difference]: Start difference. First operand 288 states and 459 transitions. Second operand 5 states. [2020-10-13 15:32:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:51,875 INFO L93 Difference]: Finished difference Result 597 states and 947 transitions. [2020-10-13 15:32:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:51,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:32:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:51,878 INFO L225 Difference]: With dead ends: 597 [2020-10-13 15:32:51,879 INFO L226 Difference]: Without dead ends: 325 [2020-10-13 15:32:51,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:51,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-13 15:32:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 289. [2020-10-13 15:32:51,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-13 15:32:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 460 transitions. [2020-10-13 15:32:51,887 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 460 transitions. Word has length 116 [2020-10-13 15:32:51,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:51,887 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 460 transitions. [2020-10-13 15:32:51,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:51,887 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 460 transitions. [2020-10-13 15:32:51,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:32:51,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:51,889 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:51,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:32:51,889 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:51,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:51,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1230327210, now seen corresponding path program 1 times [2020-10-13 15:32:51,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:51,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908294876] [2020-10-13 15:32:51,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:52,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:52,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:32:52,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-13 15:32:52,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:32:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 15:32:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 15:32:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:52,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:52,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:52,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:52,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:52,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:52,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-13 15:32:52,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908294876] [2020-10-13 15:32:52,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:52,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:32:52,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632134777] [2020-10-13 15:32:52,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:32:52,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:52,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:32:52,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:32:52,154 INFO L87 Difference]: Start difference. First operand 289 states and 460 transitions. Second operand 4 states. [2020-10-13 15:32:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:52,570 INFO L93 Difference]: Finished difference Result 833 states and 1339 transitions. [2020-10-13 15:32:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:32:52,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-13 15:32:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:52,574 INFO L225 Difference]: With dead ends: 833 [2020-10-13 15:32:52,574 INFO L226 Difference]: Without dead ends: 560 [2020-10-13 15:32:52,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:32:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-10-13 15:32:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2020-10-13 15:32:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-13 15:32:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 896 transitions. [2020-10-13 15:32:52,587 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 896 transitions. Word has length 116 [2020-10-13 15:32:52,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:52,587 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 896 transitions. [2020-10-13 15:32:52,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:32:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 896 transitions. [2020-10-13 15:32:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:32:52,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:52,589 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:52,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:32:52,590 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:52,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1680110311, now seen corresponding path program 1 times [2020-10-13 15:32:52,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:52,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066656092] [2020-10-13 15:32:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 15:32:52,644 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 15:32:52,644 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 15:32:52,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:32:52,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 03:32:52 BoogieIcfgContainer [2020-10-13 15:32:52,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 15:32:52,687 INFO L168 Benchmark]: Toolchain (without parser) took 82969.97 ms. Allocated memory was 145.2 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 99.0 MB in the beginning and 120.9 MB in the end (delta: -22.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-10-13 15:32:52,687 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-13 15:32:52,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1056.75 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 98.7 MB in the beginning and 160.5 MB in the end (delta: -61.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-10-13 15:32:52,688 INFO L168 Benchmark]: Boogie Preprocessor took 204.34 ms. Allocated memory is still 201.9 MB. Free memory was 160.5 MB in the beginning and 153.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. [2020-10-13 15:32:52,689 INFO L168 Benchmark]: RCFGBuilder took 1274.68 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 153.4 MB in the beginning and 176.9 MB in the end (delta: -23.5 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. [2020-10-13 15:32:52,690 INFO L168 Benchmark]: TraceAbstraction took 80428.31 ms. Allocated memory was 233.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 176.9 MB in the beginning and 120.9 MB in the end (delta: 56.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-10-13 15:32:52,692 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1056.75 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 98.7 MB in the beginning and 160.5 MB in the end (delta: -61.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 204.34 ms. Allocated memory is still 201.9 MB. Free memory was 160.5 MB in the beginning and 153.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1274.68 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 153.4 MB in the beginning and 176.9 MB in the end (delta: -23.5 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 80428.31 ms. Allocated memory was 233.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 176.9 MB in the beginning and 120.9 MB in the end (delta: 56.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1641]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1332. Possible FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_client_data ; [L1065] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1069] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1070] s->ctx = malloc(sizeof(SSL_CTX)) [L1071] s->session = malloc(sizeof(SSL_SESSION)) [L1072] s->state = 12292 [L1073] s->version = __VERIFIER_nondet_int() [L1074] CALL ssl3_connect(s) [L1080] BUF_MEM *buf ; [L1081] unsigned long tmp ; [L1082] unsigned long l ; [L1083] long num1 ; [L1084] void (*cb)() ; [L1085] int ret ; [L1086] int new_state ; [L1087] int state ; [L1088] int skip ; [L1089] int tmp___1 = __VERIFIER_nondet_int() ; [L1090] int tmp___2 = __VERIFIER_nondet_int() ; [L1091] int tmp___3 = __VERIFIER_nondet_int() ; [L1092] int tmp___4 = __VERIFIER_nondet_int() ; [L1093] int tmp___5 = __VERIFIER_nondet_int() ; [L1094] int tmp___6 = __VERIFIER_nondet_int() ; [L1095] int tmp___7 = __VERIFIER_nondet_int() ; [L1096] int tmp___8 = __VERIFIER_nondet_int() ; [L1097] long tmp___9 = __VERIFIER_nondet_long() ; [L1098] int blastFlag ; [L1101] blastFlag = 0 [L1102] s->hit=__VERIFIER_nondet_int () [L1103] s->state = 12292 [L1104] tmp = __VERIFIER_nondet_int() [L1105] cb = (void (*)())((void *)0) [L1106] ret = -1 [L1107] skip = 0 [L1108] EXPR s->info_callback [L1108] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1109] EXPR s->info_callback [L1109] cb = s->info_callback [L1117] EXPR s->in_handshake [L1117] s->in_handshake += 1 [L1118] COND FALSE !(tmp___1 & 12288) [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND TRUE s->state == 12292 [L1234] s->new_session = 1 [L1235] s->state = 4096 [L1236] EXPR s->ctx [L1236] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1236] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1241] s->server = 0 [L1242] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) [L1247] EXPR s->version [L1247] COND FALSE !((s->version & 65280) != 768) [L1253] s->type = 4096 [L1254] EXPR s->init_buf [L1254] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1272] COND FALSE !(! tmp___4) [L1278] COND FALSE !(! tmp___5) [L1284] s->state = 4368 [L1285] EXPR s->ctx [L1285] EXPR (s->ctx)->stats.sess_connect [L1285] (s->ctx)->stats.sess_connect += 1 [L1286] s->init_num = 0 [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND TRUE s->state == 4368 [L1290] s->shutdown = 0 [L1291] ret = __VERIFIER_nondet_int() [L1292] COND TRUE blastFlag == 0 [L1293] blastFlag = 1 [L1297] COND FALSE !(ret <= 0) [L1302] s->state = 4384 [L1303] s->init_num = 0 [L1304] EXPR s->bbio [L1304] EXPR s->wbio [L1304] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND TRUE s->state == 4384 [L1312] ret = __VERIFIER_nondet_int() [L1313] COND TRUE blastFlag == 1 [L1314] blastFlag = 2 [L1318] COND FALSE !(ret <= 0) [L1323] s->hit [L1323] COND FALSE !(s->hit) [L1326] s->state = 4400 [L1328] s->init_num = 0 [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND FALSE !(s->state == 4384) [L1155] EXPR s->state [L1155] COND FALSE !(s->state == 4385) [L1158] EXPR s->state [L1158] COND TRUE s->state == 4400 [L1332] EXPR s->s3 [L1332] EXPR (s->s3)->tmp.new_cipher [L1332] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1332] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1335] ret = __VERIFIER_nondet_int() [L1336] COND TRUE blastFlag == 2 [L1337] blastFlag = 3 [L1345] COND FALSE !(ret <= 0) [L1351] s->state = 4416 [L1352] s->init_num = 0 [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND FALSE !(s->state == 4384) [L1155] EXPR s->state [L1155] COND FALSE !(s->state == 4385) [L1158] EXPR s->state [L1158] COND FALSE !(s->state == 4400) [L1161] EXPR s->state [L1161] COND FALSE !(s->state == 4401) [L1164] EXPR s->state [L1164] COND TRUE s->state == 4416 [L1356] ret = __VERIFIER_nondet_int() [L1357] COND TRUE blastFlag == 3 [L1358] blastFlag = 4 [L1362] COND FALSE !(ret <= 0) [L1367] s->state = 4432 [L1368] s->init_num = 0 [L1369] COND FALSE !(! tmp___6) [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND FALSE !(s->state == 4384) [L1155] EXPR s->state [L1155] COND FALSE !(s->state == 4385) [L1158] EXPR s->state [L1158] COND FALSE !(s->state == 4400) [L1161] EXPR s->state [L1161] COND FALSE !(s->state == 4401) [L1164] EXPR s->state [L1164] COND FALSE !(s->state == 4416) [L1167] EXPR s->state [L1167] COND FALSE !(s->state == 4417) [L1170] EXPR s->state [L1170] COND TRUE s->state == 4432 [L1378] ret = __VERIFIER_nondet_int() [L1379] COND TRUE blastFlag == 4 [L1641] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 80.3s, OverallIterations: 26, TraceHistogramMax: 6, AutomataDifference: 20.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5005 SDtfs, 1930 SDslu, 7314 SDs, 0 SdLazy, 11600 SolverSat, 243 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 75 SyntacticMatches, 21 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=560occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 25 MinimizatonAttempts, 1345 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 57.6s InterpolantComputationTime, 2518 NumberOfCodeBlocks, 2518 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2375 ConstructedInterpolants, 0 QuantifiedInterpolants, 1021403 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 1910/1910 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...