/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.01.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:30:24,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:30:24,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:30:24,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:30:24,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:30:24,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:30:24,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:30:24,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:30:24,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:30:24,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:30:24,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:30:24,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:30:24,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:30:24,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:30:24,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:30:24,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:30:24,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:30:24,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:30:24,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:30:24,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:30:24,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:30:24,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:30:24,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:30:24,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:30:24,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:30:24,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:30:24,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:30:24,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:30:24,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:30:24,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:30:24,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:30:24,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:30:24,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:30:24,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:30:24,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:30:24,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:30:24,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:30:24,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:30:24,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:30:24,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:30:24,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:30:24,297 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 15:30:24,319 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:30:24,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:30:24,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:30:24,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:30:24,323 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:30:24,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:30:24,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:30:24,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:30:24,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:30:24,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:30:24,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:30:24,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:30:24,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:30:24,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:30:24,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:30:24,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:30:24,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:30:24,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:30:24,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:30:24,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:30:24,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:30:24,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:30:24,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:30:24,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:30:24,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:30:24,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:30:24,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:30:24,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:30:24,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:30:24,333 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 15:30:24,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:30:24,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:30:24,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:30:24,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:30:24,706 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:30:24,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_clnt.blast.01.i.cil-1.c [2020-10-13 15:30:24,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7f06313/c66fe02577b04a9f98e9b06eef5ce725/FLAG3dac2e14a [2020-10-13 15:30:25,395 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:30:25,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_clnt.blast.01.i.cil-1.c [2020-10-13 15:30:25,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7f06313/c66fe02577b04a9f98e9b06eef5ce725/FLAG3dac2e14a [2020-10-13 15:30:25,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7f06313/c66fe02577b04a9f98e9b06eef5ce725 [2020-10-13 15:30:25,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:30:25,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:30:25,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:30:25,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:30:25,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:30:25,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:30:25" (1/1) ... [2020-10-13 15:30:25,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a5db49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:25, skipping insertion in model container [2020-10-13 15:30:25,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:30:25" (1/1) ... [2020-10-13 15:30:25,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:30:25,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:30:26,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:30:26,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:30:26,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:30:26,476 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:30:26,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:26 WrapperNode [2020-10-13 15:30:26,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:30:26,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:30:26,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:30:26,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:30:26,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:26" (1/1) ... [2020-10-13 15:30:26,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:26" (1/1) ... [2020-10-13 15:30:26,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:26" (1/1) ... [2020-10-13 15:30:26,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:26" (1/1) ... [2020-10-13 15:30:26,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:26" (1/1) ... [2020-10-13 15:30:26,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:26" (1/1) ... [2020-10-13 15:30:26,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:26" (1/1) ... [2020-10-13 15:30:26,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:30:26,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:30:26,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:30:26,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:30:26,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:26" (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 15:30:26,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:30:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:30:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2020-10-13 15:30:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2020-10-13 15:30:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:30:26,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-13 15:30:26,697 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:30:26,697 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:30:26,697 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:30:26,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:30:26,697 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:30:26,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:30:26,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:30:26,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:30:26,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:30:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:30:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2020-10-13 15:30:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:30:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-13 15:30:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2020-10-13 15:30:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:30:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:30:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:30:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:30:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:30:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:30:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:30:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:30:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:30:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:30:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:30:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:30:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:30:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:30:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:30:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:30:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:30:27,560 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:30:28,111 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-13 15:30:28,111 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-13 15:30:28,134 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:30:28,135 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:30:28,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:30:28 BoogieIcfgContainer [2020-10-13 15:30:28,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:30:28,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:30:28,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:30:28,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:30:28,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:30:25" (1/3) ... [2020-10-13 15:30:28,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c793d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:30:28, skipping insertion in model container [2020-10-13 15:30:28,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:30:26" (2/3) ... [2020-10-13 15:30:28,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c793d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:30:28, skipping insertion in model container [2020-10-13 15:30:28,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:30:28" (3/3) ... [2020-10-13 15:30:28,148 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.01.i.cil-1.c [2020-10-13 15:30:28,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:30:28,166 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:30:28,179 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:30:28,201 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:30:28,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:30:28,201 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:30:28,201 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:30:28,202 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:30:28,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:30:28,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:30:28,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:30:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states. [2020-10-13 15:30:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 15:30:28,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:28,233 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 15:30:28,234 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:28,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:28,240 INFO L82 PathProgramCache]: Analyzing trace with hash 735003307, now seen corresponding path program 1 times [2020-10-13 15:30:28,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:28,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648847379] [2020-10-13 15:30:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:28,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:28,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:29,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:29,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:29,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 15:30:29,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:30:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-10-13 15:30:29,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:30:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:30:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:30:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:30:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:29,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:29,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:30:29,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:29,651 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 15:30:29,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648847379] [2020-10-13 15:30:29,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:29,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:29,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956227040] [2020-10-13 15:30:29,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:29,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:29,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:29,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:29,678 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 5 states. [2020-10-13 15:30:30,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:30,488 INFO L93 Difference]: Finished difference Result 271 states and 444 transitions. [2020-10-13 15:30:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:30:30,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-13 15:30:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:30,504 INFO L225 Difference]: With dead ends: 271 [2020-10-13 15:30:30,504 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 15:30:30,508 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 15:30:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 15:30:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-13 15:30:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-13 15:30:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 180 transitions. [2020-10-13 15:30:30,563 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 180 transitions. Word has length 30 [2020-10-13 15:30:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:30,563 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 180 transitions. [2020-10-13 15:30:30,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:30:30,564 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 180 transitions. [2020-10-13 15:30:30,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 15:30:30,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:30,566 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, 1] [2020-10-13 15:30:30,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:30:30,566 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:30,567 INFO L82 PathProgramCache]: Analyzing trace with hash 110518561, now seen corresponding path program 1 times [2020-10-13 15:30:30,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:30,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028910831] [2020-10-13 15:30:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:30,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:31,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:33,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:33,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 15:30:33,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:30:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3094 [2020-10-13 15:30:33,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:30:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 15:30:33,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:30:33,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:30:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:33,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:33,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:33,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:33,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:30:33,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:33,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:33,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:33,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:33,860 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 15:30:33,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028910831] [2020-10-13 15:30:33,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:33,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:30:33,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207957864] [2020-10-13 15:30:33,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:30:33,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:33,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:30:33,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:30:33,868 INFO L87 Difference]: Start difference. First operand 123 states and 180 transitions. Second operand 6 states. [2020-10-13 15:30:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:34,769 INFO L93 Difference]: Finished difference Result 263 states and 389 transitions. [2020-10-13 15:30:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:30:34,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-13 15:30:34,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:34,772 INFO L225 Difference]: With dead ends: 263 [2020-10-13 15:30:34,772 INFO L226 Difference]: Without dead ends: 156 [2020-10-13 15:30:34,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:30:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-13 15:30:34,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 140. [2020-10-13 15:30:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 15:30:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 208 transitions. [2020-10-13 15:30:34,788 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 208 transitions. Word has length 45 [2020-10-13 15:30:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:34,789 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 208 transitions. [2020-10-13 15:30:34,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:30:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 208 transitions. [2020-10-13 15:30:34,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 15:30:34,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:34,792 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, 1] [2020-10-13 15:30:34,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:30:34,792 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:34,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1117876010, now seen corresponding path program 1 times [2020-10-13 15:30:34,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:34,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767248143] [2020-10-13 15:30:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:34,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:35,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:35,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:35,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:35,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 15:30:35,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:30:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-13 15:30:35,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:30:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 15:30:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:30:35,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:35,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:35,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:35,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:35,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:30:35,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:35,865 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 15:30:35,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767248143] [2020-10-13 15:30:35,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:35,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:35,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223573048] [2020-10-13 15:30:35,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:35,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:35,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:35,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:35,868 INFO L87 Difference]: Start difference. First operand 140 states and 208 transitions. Second operand 5 states. [2020-10-13 15:30:36,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:36,501 INFO L93 Difference]: Finished difference Result 299 states and 449 transitions. [2020-10-13 15:30:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:30:36,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-13 15:30:36,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:36,504 INFO L225 Difference]: With dead ends: 299 [2020-10-13 15:30:36,504 INFO L226 Difference]: Without dead ends: 175 [2020-10-13 15:30:36,506 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 15:30:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-13 15:30:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2020-10-13 15:30:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 15:30:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 238 transitions. [2020-10-13 15:30:36,517 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 238 transitions. Word has length 60 [2020-10-13 15:30:36,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:36,518 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 238 transitions. [2020-10-13 15:30:36,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:30:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 238 transitions. [2020-10-13 15:30:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:30:36,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:36,521 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 15:30:36,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:30:36,521 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1128890017, now seen corresponding path program 1 times [2020-10-13 15:30:36,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:36,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166374931] [2020-10-13 15:30:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:36,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:37,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:37,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 15:30:37,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:30:37,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-10-13 15:30:37,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:37,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:30:37,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:30:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:30:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:37,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:37,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:37,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:37,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:37,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:37,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:30:37,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:37,501 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 15:30:37,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166374931] [2020-10-13 15:30:37,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:37,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:37,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363017962] [2020-10-13 15:30:37,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:37,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:37,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:37,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:37,503 INFO L87 Difference]: Start difference. First operand 158 states and 238 transitions. Second operand 5 states. [2020-10-13 15:30:38,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:38,357 INFO L93 Difference]: Finished difference Result 395 states and 600 transitions. [2020-10-13 15:30:38,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:30:38,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-13 15:30:38,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:38,360 INFO L225 Difference]: With dead ends: 395 [2020-10-13 15:30:38,360 INFO L226 Difference]: Without dead ends: 253 [2020-10-13 15:30:38,361 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 15:30:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-13 15:30:38,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 183. [2020-10-13 15:30:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-13 15:30:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 281 transitions. [2020-10-13 15:30:38,374 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 281 transitions. Word has length 78 [2020-10-13 15:30:38,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:38,375 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 281 transitions. [2020-10-13 15:30:38,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:30:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 281 transitions. [2020-10-13 15:30:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:30:38,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:38,377 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 15:30:38,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:30:38,377 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:38,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:38,378 INFO L82 PathProgramCache]: Analyzing trace with hash 994876511, now seen corresponding path program 1 times [2020-10-13 15:30:38,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:38,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099322368] [2020-10-13 15:30:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:38,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:38,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:40,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:40,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 15:30:40,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:30:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1631 [2020-10-13 15:30:40,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:30:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:30:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:30:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:40,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:40,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:40,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:40,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:40,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:40,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:30:40,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:40,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:40,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:40,137 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 15:30:40,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099322368] [2020-10-13 15:30:40,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:40,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:40,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117610934] [2020-10-13 15:30:40,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:40,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:40,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:40,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:40,140 INFO L87 Difference]: Start difference. First operand 183 states and 281 transitions. Second operand 5 states. [2020-10-13 15:30:40,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:40,867 INFO L93 Difference]: Finished difference Result 392 states and 606 transitions. [2020-10-13 15:30:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:30:40,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-13 15:30:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:40,871 INFO L225 Difference]: With dead ends: 392 [2020-10-13 15:30:40,871 INFO L226 Difference]: Without dead ends: 225 [2020-10-13 15:30:40,873 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 15:30:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-13 15:30:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 203. [2020-10-13 15:30:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-13 15:30:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 315 transitions. [2020-10-13 15:30:40,895 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 315 transitions. Word has length 78 [2020-10-13 15:30:40,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:40,896 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 315 transitions. [2020-10-13 15:30:40,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:30:40,896 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 315 transitions. [2020-10-13 15:30:40,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 15:30:40,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:40,902 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, 1] [2020-10-13 15:30:40,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:30:40,903 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:40,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:40,903 INFO L82 PathProgramCache]: Analyzing trace with hash 631434262, now seen corresponding path program 1 times [2020-10-13 15:30:40,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:40,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968364152] [2020-10-13 15:30:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:41,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:41,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:41,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 15:30:41,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:30:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-10-13 15:30:41,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:30:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:30:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:30:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:41,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:41,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:41,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:41,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:41,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:30:41,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:41,849 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 15:30:41,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968364152] [2020-10-13 15:30:41,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:41,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:41,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208398028] [2020-10-13 15:30:41,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:41,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:41,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:41,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:41,853 INFO L87 Difference]: Start difference. First operand 203 states and 315 transitions. Second operand 5 states. [2020-10-13 15:30:42,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:42,734 INFO L93 Difference]: Finished difference Result 455 states and 705 transitions. [2020-10-13 15:30:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:30:42,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-13 15:30:42,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:42,740 INFO L225 Difference]: With dead ends: 455 [2020-10-13 15:30:42,741 INFO L226 Difference]: Without dead ends: 268 [2020-10-13 15:30:42,743 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 15:30:42,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-13 15:30:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 204. [2020-10-13 15:30:42,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-13 15:30:42,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 316 transitions. [2020-10-13 15:30:42,755 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 316 transitions. Word has length 79 [2020-10-13 15:30:42,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:42,755 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 316 transitions. [2020-10-13 15:30:42,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:30:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 316 transitions. [2020-10-13 15:30:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:30:42,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:42,759 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, 1] [2020-10-13 15:30:42,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:30:42,760 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:42,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1789671542, now seen corresponding path program 1 times [2020-10-13 15:30:42,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:42,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803229794] [2020-10-13 15:30:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:42,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:43,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:46,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:46,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:30:46,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:30:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3510 [2020-10-13 15:30:46,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:30:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:30:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:30:46,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:46,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:46,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:46,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:46,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:46,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:30:46,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:46,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:46,393 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 15:30:46,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803229794] [2020-10-13 15:30:46,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:46,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:46,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872885900] [2020-10-13 15:30:46,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:46,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:46,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:46,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:46,397 INFO L87 Difference]: Start difference. First operand 204 states and 316 transitions. Second operand 5 states. [2020-10-13 15:30:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:47,241 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2020-10-13 15:30:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:30:47,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:30:47,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:47,244 INFO L225 Difference]: With dead ends: 456 [2020-10-13 15:30:47,244 INFO L226 Difference]: Without dead ends: 268 [2020-10-13 15:30:47,245 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 15:30:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-13 15:30:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 204. [2020-10-13 15:30:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-13 15:30:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 315 transitions. [2020-10-13 15:30:47,258 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 315 transitions. Word has length 96 [2020-10-13 15:30:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:47,259 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 315 transitions. [2020-10-13 15:30:47,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:30:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 315 transitions. [2020-10-13 15:30:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:30:47,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:47,261 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, 1] [2020-10-13 15:30:47,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:30:47,262 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:47,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:47,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1541525048, now seen corresponding path program 1 times [2020-10-13 15:30:47,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:47,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445719053] [2020-10-13 15:30:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:47,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:47,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:48,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:48,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:30:48,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:30:48,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1444 [2020-10-13 15:30:48,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:30:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 15:30:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:30:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:48,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:48,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:48,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:48,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:48,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:30:48,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:48,840 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 15:30:48,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445719053] [2020-10-13 15:30:48,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:48,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:48,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934919052] [2020-10-13 15:30:48,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:48,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:48,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:48,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:48,842 INFO L87 Difference]: Start difference. First operand 204 states and 315 transitions. Second operand 5 states. [2020-10-13 15:30:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:49,597 INFO L93 Difference]: Finished difference Result 439 states and 682 transitions. [2020-10-13 15:30:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:30:49,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:30:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:49,600 INFO L225 Difference]: With dead ends: 439 [2020-10-13 15:30:49,600 INFO L226 Difference]: Without dead ends: 251 [2020-10-13 15:30:49,601 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 15:30:49,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-13 15:30:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 226. [2020-10-13 15:30:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-13 15:30:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 353 transitions. [2020-10-13 15:30:49,611 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 353 transitions. Word has length 96 [2020-10-13 15:30:49,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:49,612 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 353 transitions. [2020-10-13 15:30:49,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:30:49,612 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 353 transitions. [2020-10-13 15:30:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 15:30:49,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:49,614 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, 1] [2020-10-13 15:30:49,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:30:49,614 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:49,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:49,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1742238299, now seen corresponding path program 1 times [2020-10-13 15:30:49,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:49,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648434450] [2020-10-13 15:30:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:49,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:50,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:50,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 15:30:50,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:30:50,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-10-13 15:30:50,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:30:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:30:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:30:50,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:50,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:50,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:50,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:50,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:50,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:50,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:30:50,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:50,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:50,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:50,904 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 15:30:50,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648434450] [2020-10-13 15:30:50,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:50,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:50,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875568909] [2020-10-13 15:30:50,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:50,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:50,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:50,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:50,907 INFO L87 Difference]: Start difference. First operand 226 states and 353 transitions. Second operand 5 states. [2020-10-13 15:30:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:51,776 INFO L93 Difference]: Finished difference Result 500 states and 779 transitions. [2020-10-13 15:30:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:30:51,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-13 15:30:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:51,779 INFO L225 Difference]: With dead ends: 500 [2020-10-13 15:30:51,779 INFO L226 Difference]: Without dead ends: 290 [2020-10-13 15:30:51,780 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 15:30:51,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-13 15:30:51,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 226. [2020-10-13 15:30:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-13 15:30:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 352 transitions. [2020-10-13 15:30:51,790 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 352 transitions. Word has length 99 [2020-10-13 15:30:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:51,791 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 352 transitions. [2020-10-13 15:30:51,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:30:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 352 transitions. [2020-10-13 15:30:51,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 15:30:51,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:51,792 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, 1] [2020-10-13 15:30:51,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:30:51,793 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:51,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:51,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1954762598, now seen corresponding path program 1 times [2020-10-13 15:30:51,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:51,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926097021] [2020-10-13 15:30:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:52,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:52,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:30:52,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:30:52,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-10-13 15:30:52,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:30:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:30:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:30:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:52,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:52,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:52,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:30:52,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:52,993 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 15:30:52,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926097021] [2020-10-13 15:30:52,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:52,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:52,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256199559] [2020-10-13 15:30:52,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:52,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:52,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:52,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:52,995 INFO L87 Difference]: Start difference. First operand 226 states and 352 transitions. Second operand 5 states. [2020-10-13 15:30:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:53,874 INFO L93 Difference]: Finished difference Result 497 states and 773 transitions. [2020-10-13 15:30:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:30:53,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 15:30:53,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:53,877 INFO L225 Difference]: With dead ends: 497 [2020-10-13 15:30:53,877 INFO L226 Difference]: Without dead ends: 287 [2020-10-13 15:30:53,878 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 15:30:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-13 15:30:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 226. [2020-10-13 15:30:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-13 15:30:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 351 transitions. [2020-10-13 15:30:53,886 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 351 transitions. Word has length 100 [2020-10-13 15:30:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:53,887 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 351 transitions. [2020-10-13 15:30:53,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:30:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 351 transitions. [2020-10-13 15:30:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:30:53,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:53,888 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] [2020-10-13 15:30:53,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:30:53,889 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:53,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:53,889 INFO L82 PathProgramCache]: Analyzing trace with hash 575619207, now seen corresponding path program 1 times [2020-10-13 15:30:53,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:53,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844480704] [2020-10-13 15:30:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:55,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:55,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:30:55,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:30:55,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-13 15:30:55,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:55,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:30:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:30:55,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:30:55,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:30:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:56,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:56,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:56,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:56,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:30:56,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:30:56,095 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 15:30:56,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844480704] [2020-10-13 15:30:56,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:56,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:56,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222433715] [2020-10-13 15:30:56,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:56,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:56,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:56,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:56,103 INFO L87 Difference]: Start difference. First operand 226 states and 351 transitions. Second operand 5 states. [2020-10-13 15:30:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:30:57,218 INFO L93 Difference]: Finished difference Result 531 states and 826 transitions. [2020-10-13 15:30:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:30:57,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:30:57,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:30:57,223 INFO L225 Difference]: With dead ends: 531 [2020-10-13 15:30:57,223 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:30:57,224 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 15:30:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:30:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 251. [2020-10-13 15:30:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-13 15:30:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 394 transitions. [2020-10-13 15:30:57,233 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 394 transitions. Word has length 103 [2020-10-13 15:30:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:30:57,234 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 394 transitions. [2020-10-13 15:30:57,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:30:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 394 transitions. [2020-10-13 15:30:57,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:30:57,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:30:57,236 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] [2020-10-13 15:30:57,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:30:57,237 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:30:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:30:57,237 INFO L82 PathProgramCache]: Analyzing trace with hash -342396728, now seen corresponding path program 1 times [2020-10-13 15:30:57,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:30:57,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466523095] [2020-10-13 15:30:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:30:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:57,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:59,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:30:59,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:30:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2390 [2020-10-13 15:30:59,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:30:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:30:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:30:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:59,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:30:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:30:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:30:59,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:30:59,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:30:59,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:30:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:30:59,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:30:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:30:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:30:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:30:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:30:59,740 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 15:30:59,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466523095] [2020-10-13 15:30:59,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:30:59,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:30:59,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844703089] [2020-10-13 15:30:59,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:30:59,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:30:59,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:30:59,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:30:59,742 INFO L87 Difference]: Start difference. First operand 251 states and 394 transitions. Second operand 5 states. [2020-10-13 15:31:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:00,722 INFO L93 Difference]: Finished difference Result 580 states and 911 transitions. [2020-10-13 15:31:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:00,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:31:00,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:00,726 INFO L225 Difference]: With dead ends: 580 [2020-10-13 15:31:00,726 INFO L226 Difference]: Without dead ends: 345 [2020-10-13 15:31:00,728 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 15:31:00,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-13 15:31:00,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 250. [2020-10-13 15:31:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 15:31:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 393 transitions. [2020-10-13 15:31:00,738 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 393 transitions. Word has length 104 [2020-10-13 15:31:00,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:00,738 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 393 transitions. [2020-10-13 15:31:00,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 393 transitions. [2020-10-13 15:31:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:31:00,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:00,741 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] [2020-10-13 15:31:00,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:31:00,741 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:00,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:00,742 INFO L82 PathProgramCache]: Analyzing trace with hash 659908336, now seen corresponding path program 1 times [2020-10-13 15:31:00,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:00,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862855051] [2020-10-13 15:31:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:00,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:02,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:02,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:31:02,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1778 [2020-10-13 15:31:02,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:02,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:31:02,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:31:02,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:31:02,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:02,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:02,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:02,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:02,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:02,622 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 15:31:02,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862855051] [2020-10-13 15:31:02,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:02,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:02,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353206649] [2020-10-13 15:31:02,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:02,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:02,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:02,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:02,625 INFO L87 Difference]: Start difference. First operand 250 states and 393 transitions. Second operand 5 states. [2020-10-13 15:31:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:03,511 INFO L93 Difference]: Finished difference Result 574 states and 904 transitions. [2020-10-13 15:31:03,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:03,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:31:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:03,514 INFO L225 Difference]: With dead ends: 574 [2020-10-13 15:31:03,514 INFO L226 Difference]: Without dead ends: 340 [2020-10-13 15:31:03,515 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 15:31:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-13 15:31:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 274. [2020-10-13 15:31:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-13 15:31:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 435 transitions. [2020-10-13 15:31:03,524 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 435 transitions. Word has length 104 [2020-10-13 15:31:03,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:03,525 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 435 transitions. [2020-10-13 15:31:03,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:03,525 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 435 transitions. [2020-10-13 15:31:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:31:03,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:03,527 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] [2020-10-13 15:31:03,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:31:03,527 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:03,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:03,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2028781873, now seen corresponding path program 1 times [2020-10-13 15:31:03,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:03,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995170073] [2020-10-13 15:31:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:04,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:05,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:05,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:31:05,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:05,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1757 [2020-10-13 15:31:05,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:31:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:31:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:05,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:05,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:05,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:05,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:05,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:05,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:05,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:05,417 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 15:31:05,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995170073] [2020-10-13 15:31:05,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:05,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:05,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327360955] [2020-10-13 15:31:05,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:05,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:05,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:05,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:05,421 INFO L87 Difference]: Start difference. First operand 274 states and 435 transitions. Second operand 5 states. [2020-10-13 15:31:06,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:06,405 INFO L93 Difference]: Finished difference Result 597 states and 945 transitions. [2020-10-13 15:31:06,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:06,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:31:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:06,409 INFO L225 Difference]: With dead ends: 597 [2020-10-13 15:31:06,409 INFO L226 Difference]: Without dead ends: 339 [2020-10-13 15:31:06,410 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 15:31:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-13 15:31:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 249. [2020-10-13 15:31:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 15:31:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 392 transitions. [2020-10-13 15:31:06,418 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 392 transitions. Word has length 105 [2020-10-13 15:31:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:06,418 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 392 transitions. [2020-10-13 15:31:06,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:06,419 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 392 transitions. [2020-10-13 15:31:06,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:31:06,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:06,420 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] [2020-10-13 15:31:06,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:31:06,421 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:06,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1869795443, now seen corresponding path program 1 times [2020-10-13 15:31:06,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:06,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460643163] [2020-10-13 15:31:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:06,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:08,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:08,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:31:08,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:08,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2045 [2020-10-13 15:31:08,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 15:31:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:31:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:31:08,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:08,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:08,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:08,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:08,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:31:08,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:08,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:31:08,640 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 15:31:08,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460643163] [2020-10-13 15:31:08,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:08,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:08,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674762174] [2020-10-13 15:31:08,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:08,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:08,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:08,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:08,642 INFO L87 Difference]: Start difference. First operand 249 states and 392 transitions. Second operand 5 states. [2020-10-13 15:31:09,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:09,609 INFO L93 Difference]: Finished difference Result 578 states and 909 transitions. [2020-10-13 15:31:09,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:09,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:31:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:09,612 INFO L225 Difference]: With dead ends: 578 [2020-10-13 15:31:09,612 INFO L226 Difference]: Without dead ends: 345 [2020-10-13 15:31:09,613 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 15:31:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-13 15:31:09,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 275. [2020-10-13 15:31:09,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-13 15:31:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 436 transitions. [2020-10-13 15:31:09,621 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 436 transitions. Word has length 109 [2020-10-13 15:31:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:09,621 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 436 transitions. [2020-10-13 15:31:09,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 436 transitions. [2020-10-13 15:31:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:31:09,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:09,623 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] [2020-10-13 15:31:09,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:31:09,624 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:09,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2003808949, now seen corresponding path program 1 times [2020-10-13 15:31:09,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:09,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945091000] [2020-10-13 15:31:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:09,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:11,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:11,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:31:11,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:11,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1692 [2020-10-13 15:31:11,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 15:31:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:31:11,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:11,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:11,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:11,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:11,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:11,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:31:11,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:11,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:11,426 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 15:31:11,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945091000] [2020-10-13 15:31:11,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:11,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:11,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316801703] [2020-10-13 15:31:11,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:11,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:11,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:11,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:11,428 INFO L87 Difference]: Start difference. First operand 275 states and 436 transitions. Second operand 5 states. [2020-10-13 15:31:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:12,364 INFO L93 Difference]: Finished difference Result 628 states and 995 transitions. [2020-10-13 15:31:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:12,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:31:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:12,367 INFO L225 Difference]: With dead ends: 628 [2020-10-13 15:31:12,368 INFO L226 Difference]: Without dead ends: 369 [2020-10-13 15:31:12,369 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 15:31:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-13 15:31:12,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 274. [2020-10-13 15:31:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-13 15:31:12,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 435 transitions. [2020-10-13 15:31:12,378 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 435 transitions. Word has length 109 [2020-10-13 15:31:12,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:12,378 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 435 transitions. [2020-10-13 15:31:12,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:12,378 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 435 transitions. [2020-10-13 15:31:12,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 15:31:12,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:12,380 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, 1] [2020-10-13 15:31:12,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:31:12,380 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:12,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:12,381 INFO L82 PathProgramCache]: Analyzing trace with hash 2124665988, now seen corresponding path program 1 times [2020-10-13 15:31:12,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:12,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419139134] [2020-10-13 15:31:12,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:12,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:12,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:13,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:15,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:15,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 15:31:15,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:15,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2875 [2020-10-13 15:31:15,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:15,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:15,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 15:31:15,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:31:15,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:15,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:15,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:15,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:15,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:15,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:15,408 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 15:31:15,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419139134] [2020-10-13 15:31:15,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:15,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:15,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716698566] [2020-10-13 15:31:15,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:15,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:15,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:15,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:15,410 INFO L87 Difference]: Start difference. First operand 274 states and 435 transitions. Second operand 5 states. [2020-10-13 15:31:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:16,262 INFO L93 Difference]: Finished difference Result 622 states and 988 transitions. [2020-10-13 15:31:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:16,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 15:31:16,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:16,266 INFO L225 Difference]: With dead ends: 622 [2020-10-13 15:31:16,266 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 15:31:16,267 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 15:31:16,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 15:31:16,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 275. [2020-10-13 15:31:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-13 15:31:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 436 transitions. [2020-10-13 15:31:16,291 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 436 transitions. Word has length 110 [2020-10-13 15:31:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:16,291 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 436 transitions. [2020-10-13 15:31:16,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:16,292 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 436 transitions. [2020-10-13 15:31:16,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 15:31:16,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:16,293 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, 1] [2020-10-13 15:31:16,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:31:16,294 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:16,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:16,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1984117378, now seen corresponding path program 1 times [2020-10-13 15:31:16,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:16,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614382678] [2020-10-13 15:31:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:16,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:17,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:17,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 15:31:17,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-13 15:31:17,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 15:31:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:31:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:17,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:17,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:17,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:17,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:17,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:17,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:17,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:17,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:17,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:17,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:17,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:17,925 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 15:31:17,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614382678] [2020-10-13 15:31:17,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:17,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:17,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067372617] [2020-10-13 15:31:17,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:17,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:17,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:17,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:17,927 INFO L87 Difference]: Start difference. First operand 275 states and 436 transitions. Second operand 5 states. [2020-10-13 15:31:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:18,843 INFO L93 Difference]: Finished difference Result 599 states and 947 transitions. [2020-10-13 15:31:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:18,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 15:31:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:18,849 INFO L225 Difference]: With dead ends: 599 [2020-10-13 15:31:18,849 INFO L226 Difference]: Without dead ends: 340 [2020-10-13 15:31:18,850 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 15:31:18,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-13 15:31:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 250. [2020-10-13 15:31:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 15:31:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 393 transitions. [2020-10-13 15:31:18,858 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 393 transitions. Word has length 110 [2020-10-13 15:31:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:18,859 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 393 transitions. [2020-10-13 15:31:18,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 393 transitions. [2020-10-13 15:31:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:31:18,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:18,860 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 15:31:18,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:31:18,861 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:18,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:18,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1624891460, now seen corresponding path program 1 times [2020-10-13 15:31:18,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:18,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647442321] [2020-10-13 15:31:18,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:18,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:19,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:23,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:23,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:31:23,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 15:31:23,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:31:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:31:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:23,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:23,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:23,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:23,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:23,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:31:23,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:23,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:24,004 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 15:31:24,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647442321] [2020-10-13 15:31:24,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:24,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:24,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943532143] [2020-10-13 15:31:24,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:24,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:24,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:24,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:24,006 INFO L87 Difference]: Start difference. First operand 250 states and 393 transitions. Second operand 5 states. [2020-10-13 15:31:24,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:24,799 INFO L93 Difference]: Finished difference Result 547 states and 857 transitions. [2020-10-13 15:31:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:24,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:31:24,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:24,804 INFO L225 Difference]: With dead ends: 547 [2020-10-13 15:31:24,804 INFO L226 Difference]: Without dead ends: 313 [2020-10-13 15:31:24,805 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 15:31:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-13 15:31:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 263. [2020-10-13 15:31:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 15:31:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 416 transitions. [2020-10-13 15:31:24,815 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 416 transitions. Word has length 115 [2020-10-13 15:31:24,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:24,816 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 416 transitions. [2020-10-13 15:31:24,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 416 transitions. [2020-10-13 15:31:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:31:24,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:24,818 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 15:31:24,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:31:24,818 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:24,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:24,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1509034978, now seen corresponding path program 1 times [2020-10-13 15:31:24,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:24,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010619462] [2020-10-13 15:31:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:29,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:29,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:29,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:31:29,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:31:29,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:31:29,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:31:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:31:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:29,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:29,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:29,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:29,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:29,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:29,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:29,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:29,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:29,929 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 15:31:29,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010619462] [2020-10-13 15:31:29,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:29,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:29,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091627878] [2020-10-13 15:31:29,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:29,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:29,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:29,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:29,931 INFO L87 Difference]: Start difference. First operand 263 states and 416 transitions. Second operand 5 states. [2020-10-13 15:31:30,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:30,697 INFO L93 Difference]: Finished difference Result 560 states and 879 transitions. [2020-10-13 15:31:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:30,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:31:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:30,700 INFO L225 Difference]: With dead ends: 560 [2020-10-13 15:31:30,700 INFO L226 Difference]: Without dead ends: 313 [2020-10-13 15:31:30,701 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 15:31:30,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-13 15:31:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 265. [2020-10-13 15:31:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:31:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 419 transitions. [2020-10-13 15:31:30,710 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 419 transitions. Word has length 115 [2020-10-13 15:31:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:30,710 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 419 transitions. [2020-10-13 15:31:30,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 419 transitions. [2020-10-13 15:31:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:31:30,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:30,712 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 15:31:30,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:31:30,713 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1798687825, now seen corresponding path program 1 times [2020-10-13 15:31:30,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:30,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235759855] [2020-10-13 15:31:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:30,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:31,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:35,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:35,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:31:35,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:31:35,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:31:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:31:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:35,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:35,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:35,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:35,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:35,827 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 15:31:35,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235759855] [2020-10-13 15:31:35,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:35,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:35,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932829212] [2020-10-13 15:31:35,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:35,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:35,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:35,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:35,837 INFO L87 Difference]: Start difference. First operand 265 states and 419 transitions. Second operand 5 states. [2020-10-13 15:31:36,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:36,622 INFO L93 Difference]: Finished difference Result 560 states and 879 transitions. [2020-10-13 15:31:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:36,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:31:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:36,624 INFO L225 Difference]: With dead ends: 560 [2020-10-13 15:31:36,625 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:31:36,626 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 15:31:36,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:31:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 265. [2020-10-13 15:31:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 15:31:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 418 transitions. [2020-10-13 15:31:36,634 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 418 transitions. Word has length 116 [2020-10-13 15:31:36,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:36,634 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 418 transitions. [2020-10-13 15:31:36,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 418 transitions. [2020-10-13 15:31:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:31:36,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:36,636 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 15:31:36,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:31:36,637 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:36,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:36,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1619843053, now seen corresponding path program 1 times [2020-10-13 15:31:36,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:36,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278890107] [2020-10-13 15:31:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:36,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:36,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:41,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:41,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:41,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:31:41,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:31:41,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:31:41,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:31:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:31:41,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:41,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:41,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:41,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:41,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:41,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:41,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:41,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:41,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:41,759 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 15:31:41,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278890107] [2020-10-13 15:31:41,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:41,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:41,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762025723] [2020-10-13 15:31:41,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:41,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:41,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:41,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:41,761 INFO L87 Difference]: Start difference. First operand 265 states and 418 transitions. Second operand 5 states. [2020-10-13 15:31:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:42,506 INFO L93 Difference]: Finished difference Result 558 states and 875 transitions. [2020-10-13 15:31:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:42,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:31:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:42,512 INFO L225 Difference]: With dead ends: 558 [2020-10-13 15:31:42,512 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:31:42,513 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 15:31:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:31:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 266. [2020-10-13 15:31:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-13 15:31:42,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 419 transitions. [2020-10-13 15:31:42,521 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 419 transitions. Word has length 116 [2020-10-13 15:31:42,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:42,521 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 419 transitions. [2020-10-13 15:31:42,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:42,521 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 419 transitions. [2020-10-13 15:31:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:31:42,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:42,523 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, 1] [2020-10-13 15:31:42,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:31:42,523 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:42,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:42,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1687317177, now seen corresponding path program 1 times [2020-10-13 15:31:42,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:42,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042193870] [2020-10-13 15:31:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:44,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:44,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:31:44,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1843 [2020-10-13 15:31:44,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:44,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:44,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 15:31:44,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:31:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:44,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:44,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:44,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:31:44,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:44,468 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 15:31:44,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042193870] [2020-10-13 15:31:44,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:44,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:44,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743348868] [2020-10-13 15:31:44,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:44,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:44,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:44,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:44,470 INFO L87 Difference]: Start difference. First operand 266 states and 419 transitions. Second operand 5 states. [2020-10-13 15:31:45,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:45,359 INFO L93 Difference]: Finished difference Result 610 states and 961 transitions. [2020-10-13 15:31:45,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:45,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:31:45,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:45,365 INFO L225 Difference]: With dead ends: 610 [2020-10-13 15:31:45,365 INFO L226 Difference]: Without dead ends: 360 [2020-10-13 15:31:45,368 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 15:31:45,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-13 15:31:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 290. [2020-10-13 15:31:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:31:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 461 transitions. [2020-10-13 15:31:45,381 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 461 transitions. Word has length 117 [2020-10-13 15:31:45,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:45,381 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 461 transitions. [2020-10-13 15:31:45,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 461 transitions. [2020-10-13 15:31:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:31:45,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:45,383 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] [2020-10-13 15:31:45,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:31:45,383 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:45,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:45,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1822356076, now seen corresponding path program 1 times [2020-10-13 15:31:45,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:45,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649906292] [2020-10-13 15:31:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:45,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:45,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:31:45,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:31:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-13 15:31:45,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:31:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 15:31:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:31:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:45,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:45,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:45,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:45,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:45,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 15:31:45,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649906292] [2020-10-13 15:31:45,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:45,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:31:45,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584897055] [2020-10-13 15:31:45,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:31:45,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:45,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:31:45,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:31:45,750 INFO L87 Difference]: Start difference. First operand 290 states and 461 transitions. Second operand 4 states. [2020-10-13 15:31:46,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:46,198 INFO L93 Difference]: Finished difference Result 564 states and 902 transitions. [2020-10-13 15:31:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:31:46,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-13 15:31:46,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:46,203 INFO L225 Difference]: With dead ends: 564 [2020-10-13 15:31:46,203 INFO L226 Difference]: Without dead ends: 562 [2020-10-13 15:31:46,204 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 15:31:46,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-13 15:31:46,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-10-13 15:31:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-13 15:31:46,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 900 transitions. [2020-10-13 15:31:46,217 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 900 transitions. Word has length 117 [2020-10-13 15:31:46,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:46,218 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 900 transitions. [2020-10-13 15:31:46,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:31:46,218 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 900 transitions. [2020-10-13 15:31:46,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:31:46,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:46,220 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:46,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:31:46,220 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:46,220 INFO L82 PathProgramCache]: Analyzing trace with hash -404653036, now seen corresponding path program 1 times [2020-10-13 15:31:46,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:46,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387422932] [2020-10-13 15:31:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:46,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:49,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:49,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:31:49,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2871 [2020-10-13 15:31:49,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:31:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:31:49,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:49,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:49,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:49,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:49,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:49,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:49,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:49,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:49,194 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:31:49,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387422932] [2020-10-13 15:31:49,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:49,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:49,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033693427] [2020-10-13 15:31:49,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:49,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:49,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:49,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:49,196 INFO L87 Difference]: Start difference. First operand 562 states and 900 transitions. Second operand 5 states. [2020-10-13 15:31:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:50,130 INFO L93 Difference]: Finished difference Result 1288 states and 2054 transitions. [2020-10-13 15:31:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:50,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:31:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:50,134 INFO L225 Difference]: With dead ends: 1288 [2020-10-13 15:31:50,135 INFO L226 Difference]: Without dead ends: 742 [2020-10-13 15:31:50,136 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 15:31:50,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-13 15:31:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 608. [2020-10-13 15:31:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-13 15:31:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 978 transitions. [2020-10-13 15:31:50,152 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 978 transitions. Word has length 125 [2020-10-13 15:31:50,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:50,152 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 978 transitions. [2020-10-13 15:31:50,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:50,153 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 978 transitions. [2020-10-13 15:31:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:31:50,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:50,155 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:50,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:31:50,155 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:50,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:50,156 INFO L82 PathProgramCache]: Analyzing trace with hash 488833302, now seen corresponding path program 1 times [2020-10-13 15:31:50,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:50,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213318453] [2020-10-13 15:31:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:50,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:50,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:53,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:53,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:31:53,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2898 [2020-10-13 15:31:53,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:31:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:31:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:53,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:53,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:53,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:53,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:53,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:31:53,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:31:53,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213318453] [2020-10-13 15:31:53,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:53,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:53,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327059334] [2020-10-13 15:31:53,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:53,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:53,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:53,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:53,159 INFO L87 Difference]: Start difference. First operand 608 states and 978 transitions. Second operand 5 states. [2020-10-13 15:31:54,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:54,052 INFO L93 Difference]: Finished difference Result 1378 states and 2208 transitions. [2020-10-13 15:31:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:54,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:31:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:54,056 INFO L225 Difference]: With dead ends: 1378 [2020-10-13 15:31:54,056 INFO L226 Difference]: Without dead ends: 786 [2020-10-13 15:31:54,057 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 15:31:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-10-13 15:31:54,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 606. [2020-10-13 15:31:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-10-13 15:31:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 976 transitions. [2020-10-13 15:31:54,073 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 976 transitions. Word has length 125 [2020-10-13 15:31:54,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:54,073 INFO L479 AbstractCegarLoop]: Abstraction has 606 states and 976 transitions. [2020-10-13 15:31:54,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 976 transitions. [2020-10-13 15:31:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:31:54,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:54,076 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 15:31:54,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:31:54,076 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:54,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:54,077 INFO L82 PathProgramCache]: Analyzing trace with hash -95850351, now seen corresponding path program 1 times [2020-10-13 15:31:54,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:54,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478002883] [2020-10-13 15:31:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:56,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:56,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:31:56,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:56,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2756 [2020-10-13 15:31:56,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:56,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:31:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:31:56,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:56,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:56,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:56,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:56,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:31:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:31:56,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478002883] [2020-10-13 15:31:56,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:56,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:56,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247390745] [2020-10-13 15:31:56,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:56,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:56,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:56,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:56,956 INFO L87 Difference]: Start difference. First operand 606 states and 976 transitions. Second operand 5 states. [2020-10-13 15:31:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:57,847 INFO L93 Difference]: Finished difference Result 1370 states and 2196 transitions. [2020-10-13 15:31:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:57,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:31:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:57,851 INFO L225 Difference]: With dead ends: 1370 [2020-10-13 15:31:57,851 INFO L226 Difference]: Without dead ends: 780 [2020-10-13 15:31:57,853 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 15:31:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-10-13 15:31:57,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 654. [2020-10-13 15:31:57,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-10-13 15:31:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1056 transitions. [2020-10-13 15:31:57,871 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1056 transitions. Word has length 126 [2020-10-13 15:31:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:57,871 INFO L479 AbstractCegarLoop]: Abstraction has 654 states and 1056 transitions. [2020-10-13 15:31:57,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1056 transitions. [2020-10-13 15:31:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:31:57,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:57,874 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 15:31:57,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:31:57,874 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:57,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1832422351, now seen corresponding path program 1 times [2020-10-13 15:31:57,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:57,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149664405] [2020-10-13 15:31:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:00,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:00,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:32:00,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:00,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2809 [2020-10-13 15:32:00,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:00,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:00,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:32:00,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:32:00,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:00,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:00,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:00,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:00,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:00,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 15:32:00,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149664405] [2020-10-13 15:32:00,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:00,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:00,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821356740] [2020-10-13 15:32:00,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:00,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:00,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:00,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:00,791 INFO L87 Difference]: Start difference. First operand 654 states and 1056 transitions. Second operand 5 states. [2020-10-13 15:32:01,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:01,666 INFO L93 Difference]: Finished difference Result 1420 states and 2278 transitions. [2020-10-13 15:32:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:01,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:32:01,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:01,671 INFO L225 Difference]: With dead ends: 1420 [2020-10-13 15:32:01,671 INFO L226 Difference]: Without dead ends: 782 [2020-10-13 15:32:01,673 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 15:32:01,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2020-10-13 15:32:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 608. [2020-10-13 15:32:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-13 15:32:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 978 transitions. [2020-10-13 15:32:01,688 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 978 transitions. Word has length 126 [2020-10-13 15:32:01,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:01,689 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 978 transitions. [2020-10-13 15:32:01,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:01,689 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 978 transitions. [2020-10-13 15:32:01,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 15:32:01,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:01,691 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:01,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:32:01,691 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash -651034117, now seen corresponding path program 1 times [2020-10-13 15:32:01,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:01,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78935069] [2020-10-13 15:32:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:01,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:01,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:01,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:06,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:06,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:06,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 15:32:06,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:32:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-13 15:32:06,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:32:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:32:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:06,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 15:32:06,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78935069] [2020-10-13 15:32:06,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:06,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:06,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083199565] [2020-10-13 15:32:06,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:06,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:06,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:06,915 INFO L87 Difference]: Start difference. First operand 608 states and 978 transitions. Second operand 5 states. [2020-10-13 15:32:07,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:07,768 INFO L93 Difference]: Finished difference Result 1286 states and 2050 transitions. [2020-10-13 15:32:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:07,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-13 15:32:07,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:07,772 INFO L225 Difference]: With dead ends: 1286 [2020-10-13 15:32:07,772 INFO L226 Difference]: Without dead ends: 694 [2020-10-13 15:32:07,773 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 15:32:07,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-10-13 15:32:07,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 608. [2020-10-13 15:32:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-13 15:32:07,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 976 transitions. [2020-10-13 15:32:07,791 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 976 transitions. Word has length 141 [2020-10-13 15:32:07,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:07,792 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 976 transitions. [2020-10-13 15:32:07,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:07,792 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 976 transitions. [2020-10-13 15:32:07,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 15:32:07,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:07,794 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:07,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:32:07,794 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:07,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:07,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1201620346, now seen corresponding path program 1 times [2020-10-13 15:32:07,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:07,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454972795] [2020-10-13 15:32:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:07,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:07,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:08,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:12,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:12,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 15:32:12,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:32:12,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-13 15:32:12,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 15:32:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:32:12,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:12,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:12,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:12,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:12,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:12,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 15:32:12,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454972795] [2020-10-13 15:32:12,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:12,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:12,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707027356] [2020-10-13 15:32:12,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:12,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:12,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:12,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:12,949 INFO L87 Difference]: Start difference. First operand 608 states and 976 transitions. Second operand 5 states. [2020-10-13 15:32:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:13,728 INFO L93 Difference]: Finished difference Result 1278 states and 2034 transitions. [2020-10-13 15:32:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:13,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 15:32:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:13,732 INFO L225 Difference]: With dead ends: 1278 [2020-10-13 15:32:13,733 INFO L226 Difference]: Without dead ends: 686 [2020-10-13 15:32:13,734 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 15:32:13,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-10-13 15:32:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 608. [2020-10-13 15:32:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-13 15:32:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 974 transitions. [2020-10-13 15:32:13,749 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 974 transitions. Word has length 142 [2020-10-13 15:32:13,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:13,749 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 974 transitions. [2020-10-13 15:32:13,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:13,749 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 974 transitions. [2020-10-13 15:32:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 15:32:13,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:13,751 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:13,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:32:13,752 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:13,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:13,752 INFO L82 PathProgramCache]: Analyzing trace with hash -593388715, now seen corresponding path program 1 times [2020-10-13 15:32:13,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:13,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399741450] [2020-10-13 15:32:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:18,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:18,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 15:32:18,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:32:18,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 15:32:18,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:32:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:32:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:18,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:18,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:18,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:18,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:32:18,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 15:32:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 15:32:18,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399741450] [2020-10-13 15:32:18,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:18,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:18,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367574952] [2020-10-13 15:32:18,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:18,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:18,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:18,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:18,993 INFO L87 Difference]: Start difference. First operand 608 states and 974 transitions. Second operand 5 states. [2020-10-13 15:32:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:19,867 INFO L93 Difference]: Finished difference Result 1374 states and 2190 transitions. [2020-10-13 15:32:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:19,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-13 15:32:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:19,872 INFO L225 Difference]: With dead ends: 1374 [2020-10-13 15:32:19,872 INFO L226 Difference]: Without dead ends: 782 [2020-10-13 15:32:19,873 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 15:32:19,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2020-10-13 15:32:19,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 662. [2020-10-13 15:32:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-13 15:32:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1060 transitions. [2020-10-13 15:32:19,890 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1060 transitions. Word has length 166 [2020-10-13 15:32:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:19,891 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 1060 transitions. [2020-10-13 15:32:19,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1060 transitions. [2020-10-13 15:32:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 15:32:19,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:19,893 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:19,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:32:19,894 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:19,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:19,894 INFO L82 PathProgramCache]: Analyzing trace with hash 585387116, now seen corresponding path program 1 times [2020-10-13 15:32:19,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:19,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437609483] [2020-10-13 15:32:19,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:19,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:24,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:24,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 15:32:24,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:32:24,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 15:32:24,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:24,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:24,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:32:24,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:32:24,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:25,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:25,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:25,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:25,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:25,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:25,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:25,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:25,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:25,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:25,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 15:32:25,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437609483] [2020-10-13 15:32:25,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:25,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:25,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529543515] [2020-10-13 15:32:25,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:25,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:25,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:25,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:25,032 INFO L87 Difference]: Start difference. First operand 662 states and 1060 transitions. Second operand 5 states. [2020-10-13 15:32:25,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:25,814 INFO L93 Difference]: Finished difference Result 1420 states and 2262 transitions. [2020-10-13 15:32:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:25,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-13 15:32:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:25,818 INFO L225 Difference]: With dead ends: 1420 [2020-10-13 15:32:25,818 INFO L226 Difference]: Without dead ends: 774 [2020-10-13 15:32:25,822 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 15:32:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-10-13 15:32:25,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 664. [2020-10-13 15:32:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-10-13 15:32:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1062 transitions. [2020-10-13 15:32:25,849 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1062 transitions. Word has length 167 [2020-10-13 15:32:25,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:25,850 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 1062 transitions. [2020-10-13 15:32:25,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1062 transitions. [2020-10-13 15:32:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 15:32:25,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:25,852 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1] [2020-10-13 15:32:25,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:32:25,853 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:25,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:25,853 INFO L82 PathProgramCache]: Analyzing trace with hash 699907561, now seen corresponding path program 1 times [2020-10-13 15:32:25,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:25,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114214939] [2020-10-13 15:32:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:25,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:26,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:30,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:30,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 15:32:30,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:32:30,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:32:30,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 15:32:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:32:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:31,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:31,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:31,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:31,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 15:32:31,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114214939] [2020-10-13 15:32:31,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:31,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:31,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543499779] [2020-10-13 15:32:31,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:31,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:31,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:31,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:31,036 INFO L87 Difference]: Start difference. First operand 664 states and 1062 transitions. Second operand 5 states. [2020-10-13 15:32:32,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:32,058 INFO L93 Difference]: Finished difference Result 1492 states and 2378 transitions. [2020-10-13 15:32:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:32,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 15:32:32,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:32,063 INFO L225 Difference]: With dead ends: 1492 [2020-10-13 15:32:32,063 INFO L226 Difference]: Without dead ends: 844 [2020-10-13 15:32:32,069 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 15:32:32,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-13 15:32:32,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 718. [2020-10-13 15:32:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2020-10-13 15:32:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1152 transitions. [2020-10-13 15:32:32,087 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1152 transitions. Word has length 172 [2020-10-13 15:32:32,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:32,088 INFO L479 AbstractCegarLoop]: Abstraction has 718 states and 1152 transitions. [2020-10-13 15:32:32,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1152 transitions. [2020-10-13 15:32:32,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 15:32:32,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:32,090 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1] [2020-10-13 15:32:32,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:32:32,092 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:32,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:32,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1286183783, now seen corresponding path program 1 times [2020-10-13 15:32:32,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:32,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128596309] [2020-10-13 15:32:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:32,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:37,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:37,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 15:32:37,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:32:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 15:32:37,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 15:32:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:32:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:37,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:37,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:37,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:37,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:37,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:37,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 15:32:37,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128596309] [2020-10-13 15:32:37,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:37,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:37,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306879608] [2020-10-13 15:32:37,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:37,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:37,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:37,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:37,241 INFO L87 Difference]: Start difference. First operand 718 states and 1152 transitions. Second operand 5 states. [2020-10-13 15:32:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:38,152 INFO L93 Difference]: Finished difference Result 1552 states and 2474 transitions. [2020-10-13 15:32:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:38,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 15:32:38,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:38,157 INFO L225 Difference]: With dead ends: 1552 [2020-10-13 15:32:38,157 INFO L226 Difference]: Without dead ends: 850 [2020-10-13 15:32:38,159 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 15:32:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-13 15:32:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 670. [2020-10-13 15:32:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2020-10-13 15:32:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1068 transitions. [2020-10-13 15:32:38,174 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1068 transitions. Word has length 172 [2020-10-13 15:32:38,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:38,174 INFO L479 AbstractCegarLoop]: Abstraction has 670 states and 1068 transitions. [2020-10-13 15:32:38,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1068 transitions. [2020-10-13 15:32:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 15:32:38,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:38,177 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:38,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:32:38,177 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:38,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:38,178 INFO L82 PathProgramCache]: Analyzing trace with hash 2022866008, now seen corresponding path program 1 times [2020-10-13 15:32:38,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:38,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650185739] [2020-10-13 15:32:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:43,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:43,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 15:32:43,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:32:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 15:32:43,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 15:32:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:32:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:43,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:43,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:43,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:43,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:43,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:43,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 15:32:43,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650185739] [2020-10-13 15:32:43,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:43,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:43,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429981058] [2020-10-13 15:32:43,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:43,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:43,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:43,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:43,356 INFO L87 Difference]: Start difference. First operand 670 states and 1068 transitions. Second operand 5 states. [2020-10-13 15:32:44,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:44,335 INFO L93 Difference]: Finished difference Result 1496 states and 2376 transitions. [2020-10-13 15:32:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:44,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-13 15:32:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:44,340 INFO L225 Difference]: With dead ends: 1496 [2020-10-13 15:32:44,340 INFO L226 Difference]: Without dead ends: 842 [2020-10-13 15:32:44,341 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 15:32:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-10-13 15:32:44,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 718. [2020-10-13 15:32:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2020-10-13 15:32:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1152 transitions. [2020-10-13 15:32:44,356 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1152 transitions. Word has length 173 [2020-10-13 15:32:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:44,357 INFO L479 AbstractCegarLoop]: Abstraction has 718 states and 1152 transitions. [2020-10-13 15:32:44,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1152 transitions. [2020-10-13 15:32:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 15:32:44,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:44,359 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:44,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:32:44,359 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:44,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1277407590, now seen corresponding path program 1 times [2020-10-13 15:32:44,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:44,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334053107] [2020-10-13 15:32:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:44,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:47,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:49,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:49,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 15:32:49,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:32:49,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:32:49,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:49,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:49,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 15:32:49,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:32:49,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:49,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:49,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:49,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:49,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:49,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:49,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:49,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:49,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 15:32:49,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334053107] [2020-10-13 15:32:49,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:49,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:49,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312347326] [2020-10-13 15:32:49,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:49,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:49,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:49,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:49,482 INFO L87 Difference]: Start difference. First operand 718 states and 1152 transitions. Second operand 5 states. [2020-10-13 15:32:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:50,338 INFO L93 Difference]: Finished difference Result 1538 states and 2454 transitions. [2020-10-13 15:32:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:50,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-13 15:32:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:50,344 INFO L225 Difference]: With dead ends: 1538 [2020-10-13 15:32:50,345 INFO L226 Difference]: Without dead ends: 836 [2020-10-13 15:32:50,346 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 15:32:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-13 15:32:50,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 664. [2020-10-13 15:32:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-10-13 15:32:50,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1062 transitions. [2020-10-13 15:32:50,361 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1062 transitions. Word has length 173 [2020-10-13 15:32:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:50,361 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 1062 transitions. [2020-10-13 15:32:50,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1062 transitions. [2020-10-13 15:32:50,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 15:32:50,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:50,364 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:50,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:32:50,364 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:50,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1439411861, now seen corresponding path program 1 times [2020-10-13 15:32:50,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:50,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258725534] [2020-10-13 15:32:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:55,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:55,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 15:32:55,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:32:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 15:32:55,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 15:32:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:32:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:55,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:55,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:55,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:55,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:55,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:55,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:55,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:55,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 15:32:55,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258725534] [2020-10-13 15:32:55,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:55,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:55,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522336660] [2020-10-13 15:32:55,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:55,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:55,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:55,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:55,524 INFO L87 Difference]: Start difference. First operand 664 states and 1062 transitions. Second operand 5 states. [2020-10-13 15:32:56,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:56,454 INFO L93 Difference]: Finished difference Result 1450 states and 2302 transitions. [2020-10-13 15:32:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:56,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-13 15:32:56,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:56,459 INFO L225 Difference]: With dead ends: 1450 [2020-10-13 15:32:56,459 INFO L226 Difference]: Without dead ends: 802 [2020-10-13 15:32:56,462 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 15:32:56,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-10-13 15:32:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 668. [2020-10-13 15:32:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2020-10-13 15:32:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1068 transitions. [2020-10-13 15:32:56,480 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1068 transitions. Word has length 180 [2020-10-13 15:32:56,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:56,480 INFO L479 AbstractCegarLoop]: Abstraction has 668 states and 1068 transitions. [2020-10-13 15:32:56,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1068 transitions. [2020-10-13 15:32:56,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 15:32:56,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:56,483 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:56,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:32:56,483 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:56,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1468571480, now seen corresponding path program 1 times [2020-10-13 15:32:56,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:56,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282095405] [2020-10-13 15:32:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:56,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:56,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:57,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:01,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:01,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 15:33:01,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:33:01,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:33:01,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:01,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:01,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 15:33:01,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:33:01,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:01,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:01,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:01,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:01,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:01,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:01,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 15:33:01,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282095405] [2020-10-13 15:33:01,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:01,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:01,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715682458] [2020-10-13 15:33:01,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:01,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:01,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:01,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:01,628 INFO L87 Difference]: Start difference. First operand 668 states and 1068 transitions. Second operand 5 states. [2020-10-13 15:33:02,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:02,351 INFO L93 Difference]: Finished difference Result 1426 states and 2276 transitions. [2020-10-13 15:33:02,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:02,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-13 15:33:02,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:02,357 INFO L225 Difference]: With dead ends: 1426 [2020-10-13 15:33:02,357 INFO L226 Difference]: Without dead ends: 774 [2020-10-13 15:33:02,359 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 15:33:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-10-13 15:33:02,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 716. [2020-10-13 15:33:02,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-10-13 15:33:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1152 transitions. [2020-10-13 15:33:02,373 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1152 transitions. Word has length 180 [2020-10-13 15:33:02,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:02,374 INFO L479 AbstractCegarLoop]: Abstraction has 716 states and 1152 transitions. [2020-10-13 15:33:02,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:02,374 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1152 transitions. [2020-10-13 15:33:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 15:33:02,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:02,376 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:02,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:33:02,377 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:02,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:02,377 INFO L82 PathProgramCache]: Analyzing trace with hash -822304468, now seen corresponding path program 1 times [2020-10-13 15:33:02,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:02,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357008048] [2020-10-13 15:33:02,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:02,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:02,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:07,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:07,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 15:33:07,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:33:07,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 15:33:07,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:07,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:07,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 15:33:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:33:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:07,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:07,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:07,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:07,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 15:33:07,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357008048] [2020-10-13 15:33:07,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:07,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:07,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782652055] [2020-10-13 15:33:07,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:07,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:07,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:07,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:07,532 INFO L87 Difference]: Start difference. First operand 716 states and 1152 transitions. Second operand 5 states. [2020-10-13 15:33:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:08,435 INFO L93 Difference]: Finished difference Result 1542 states and 2462 transitions. [2020-10-13 15:33:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:08,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-13 15:33:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:08,440 INFO L225 Difference]: With dead ends: 1542 [2020-10-13 15:33:08,441 INFO L226 Difference]: Without dead ends: 842 [2020-10-13 15:33:08,442 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 15:33:08,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-10-13 15:33:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 714. [2020-10-13 15:33:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2020-10-13 15:33:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1150 transitions. [2020-10-13 15:33:08,455 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1150 transitions. Word has length 181 [2020-10-13 15:33:08,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:08,455 INFO L479 AbstractCegarLoop]: Abstraction has 714 states and 1150 transitions. [2020-10-13 15:33:08,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1150 transitions. [2020-10-13 15:33:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 15:33:08,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:08,458 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:08,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:33:08,458 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:08,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1529540678, now seen corresponding path program 1 times [2020-10-13 15:33:08,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:08,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847659277] [2020-10-13 15:33:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:08,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:08,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:08,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:08,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:13,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 15:33:13,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:33:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 15:33:13,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 15:33:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:33:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:13,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:13,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:13,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:13,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:13,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:13,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:13,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 15:33:13,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847659277] [2020-10-13 15:33:13,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:13,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:13,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523613438] [2020-10-13 15:33:13,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:13,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:13,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:13,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:13,620 INFO L87 Difference]: Start difference. First operand 714 states and 1150 transitions. Second operand 5 states. [2020-10-13 15:33:14,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:14,366 INFO L93 Difference]: Finished difference Result 1474 states and 2366 transitions. [2020-10-13 15:33:14,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:14,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-13 15:33:14,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:14,370 INFO L225 Difference]: With dead ends: 1474 [2020-10-13 15:33:14,370 INFO L226 Difference]: Without dead ends: 776 [2020-10-13 15:33:14,372 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 15:33:14,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-10-13 15:33:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 720. [2020-10-13 15:33:14,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-10-13 15:33:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1160 transitions. [2020-10-13 15:33:14,385 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1160 transitions. Word has length 181 [2020-10-13 15:33:14,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:14,385 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 1160 transitions. [2020-10-13 15:33:14,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1160 transitions. [2020-10-13 15:33:14,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 15:33:14,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:14,388 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:14,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:33:14,388 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:14,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:14,389 INFO L82 PathProgramCache]: Analyzing trace with hash 432033980, now seen corresponding path program 1 times [2020-10-13 15:33:14,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:14,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960855381] [2020-10-13 15:33:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:19,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:19,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 15:33:19,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:33:19,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:33:19,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 15:33:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:33:19,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:19,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:19,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:19,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:19,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:19,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:19,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:19,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:19,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:19,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 15:33:19,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960855381] [2020-10-13 15:33:19,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:19,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:19,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545390405] [2020-10-13 15:33:19,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:19,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:19,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:19,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:19,540 INFO L87 Difference]: Start difference. First operand 720 states and 1160 transitions. Second operand 5 states. [2020-10-13 15:33:20,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:20,311 INFO L93 Difference]: Finished difference Result 1496 states and 2398 transitions. [2020-10-13 15:33:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:20,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-13 15:33:20,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:20,315 INFO L225 Difference]: With dead ends: 1496 [2020-10-13 15:33:20,315 INFO L226 Difference]: Without dead ends: 792 [2020-10-13 15:33:20,318 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 15:33:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-13 15:33:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 738. [2020-10-13 15:33:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-13 15:33:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1186 transitions. [2020-10-13 15:33:20,333 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1186 transitions. Word has length 181 [2020-10-13 15:33:20,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:20,334 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 1186 transitions. [2020-10-13 15:33:20,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1186 transitions. [2020-10-13 15:33:20,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-13 15:33:20,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:20,336 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:20,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:33:20,336 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:20,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:20,337 INFO L82 PathProgramCache]: Analyzing trace with hash -426784502, now seen corresponding path program 1 times [2020-10-13 15:33:20,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:20,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560467780] [2020-10-13 15:33:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:25,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:25,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 15:33:25,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:25,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 15:33:25,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 15:33:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:33:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:25,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:25,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:25,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:25,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:25,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 15:33:25,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560467780] [2020-10-13 15:33:25,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:25,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:25,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273857010] [2020-10-13 15:33:25,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:25,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:25,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:25,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:25,501 INFO L87 Difference]: Start difference. First operand 738 states and 1186 transitions. Second operand 5 states. [2020-10-13 15:33:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:26,261 INFO L93 Difference]: Finished difference Result 1516 states and 2426 transitions. [2020-10-13 15:33:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:26,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-13 15:33:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:26,266 INFO L225 Difference]: With dead ends: 1516 [2020-10-13 15:33:26,266 INFO L226 Difference]: Without dead ends: 794 [2020-10-13 15:33:26,267 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 15:33:26,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2020-10-13 15:33:26,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 738. [2020-10-13 15:33:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-13 15:33:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1184 transitions. [2020-10-13 15:33:26,278 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1184 transitions. Word has length 183 [2020-10-13 15:33:26,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:26,278 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 1184 transitions. [2020-10-13 15:33:26,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1184 transitions. [2020-10-13 15:33:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-13 15:33:26,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:26,280 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:26,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:33:26,280 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:26,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:26,280 INFO L82 PathProgramCache]: Analyzing trace with hash -844181108, now seen corresponding path program 1 times [2020-10-13 15:33:26,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:26,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722190647] [2020-10-13 15:33:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:26,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:26,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:26,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:31,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 15:33:31,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 15:33:31,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 15:33:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:33:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:31,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:31,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:31,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:31,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:31,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:31,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:31,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:31,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:31,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 15:33:31,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722190647] [2020-10-13 15:33:31,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:31,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:31,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781333487] [2020-10-13 15:33:31,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:31,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:31,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:31,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:31,428 INFO L87 Difference]: Start difference. First operand 738 states and 1184 transitions. Second operand 5 states. [2020-10-13 15:33:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:32,164 INFO L93 Difference]: Finished difference Result 1514 states and 2418 transitions. [2020-10-13 15:33:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:32,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-13 15:33:32,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:32,170 INFO L225 Difference]: With dead ends: 1514 [2020-10-13 15:33:32,170 INFO L226 Difference]: Without dead ends: 792 [2020-10-13 15:33:32,171 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 15:33:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-13 15:33:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 738. [2020-10-13 15:33:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-13 15:33:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1182 transitions. [2020-10-13 15:33:32,183 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1182 transitions. Word has length 183 [2020-10-13 15:33:32,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:32,183 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 1182 transitions. [2020-10-13 15:33:32,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1182 transitions. [2020-10-13 15:33:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 15:33:32,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:32,185 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:32,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:33:32,186 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:32,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:32,186 INFO L82 PathProgramCache]: Analyzing trace with hash -20909175, now seen corresponding path program 1 times [2020-10-13 15:33:32,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:32,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402075750] [2020-10-13 15:33:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:32,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:32,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:37,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:37,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 15:33:37,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:33:37,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 15:33:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:33:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:37,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:37,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:37,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:37,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:37,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:37,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:37,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:37,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:37,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:37,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 15:33:37,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402075750] [2020-10-13 15:33:37,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:37,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:37,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262015677] [2020-10-13 15:33:37,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:37,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:37,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:37,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:37,310 INFO L87 Difference]: Start difference. First operand 738 states and 1182 transitions. Second operand 5 states. [2020-10-13 15:33:38,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:38,078 INFO L93 Difference]: Finished difference Result 1506 states and 2404 transitions. [2020-10-13 15:33:38,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:38,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-13 15:33:38,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:38,082 INFO L225 Difference]: With dead ends: 1506 [2020-10-13 15:33:38,082 INFO L226 Difference]: Without dead ends: 784 [2020-10-13 15:33:38,083 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 15:33:38,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-13 15:33:38,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 738. [2020-10-13 15:33:38,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-13 15:33:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1180 transitions. [2020-10-13 15:33:38,094 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1180 transitions. Word has length 184 [2020-10-13 15:33:38,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:38,094 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 1180 transitions. [2020-10-13 15:33:38,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:38,094 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1180 transitions. [2020-10-13 15:33:38,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 15:33:38,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:38,096 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:38,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:33:38,096 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:38,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:38,097 INFO L82 PathProgramCache]: Analyzing trace with hash -75302073, now seen corresponding path program 1 times [2020-10-13 15:33:38,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:38,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038078495] [2020-10-13 15:33:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:38,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:43,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:43,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 15:33:43,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:33:43,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 15:33:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:33:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:43,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:43,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:43,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:43,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:43,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:43,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:43,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 15:33:43,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038078495] [2020-10-13 15:33:43,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:43,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:43,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255761882] [2020-10-13 15:33:43,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:43,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:43,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:43,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:43,220 INFO L87 Difference]: Start difference. First operand 738 states and 1180 transitions. Second operand 5 states. [2020-10-13 15:33:43,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:43,972 INFO L93 Difference]: Finished difference Result 1504 states and 2396 transitions. [2020-10-13 15:33:43,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:43,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-13 15:33:43,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:43,977 INFO L225 Difference]: With dead ends: 1504 [2020-10-13 15:33:43,977 INFO L226 Difference]: Without dead ends: 782 [2020-10-13 15:33:43,979 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 15:33:43,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2020-10-13 15:33:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 738. [2020-10-13 15:33:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-13 15:33:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1178 transitions. [2020-10-13 15:33:43,991 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1178 transitions. Word has length 184 [2020-10-13 15:33:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:43,992 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 1178 transitions. [2020-10-13 15:33:43,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1178 transitions. [2020-10-13 15:33:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-13 15:33:43,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:43,994 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:43,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:33:43,994 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:43,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2101019219, now seen corresponding path program 1 times [2020-10-13 15:33:43,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:43,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066274271] [2020-10-13 15:33:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:44,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:44,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:44,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:49,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:49,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 15:33:49,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-13 15:33:49,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 15:33:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:33:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:49,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:49,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:49,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:49,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:49,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:49,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:49,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:49,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:49,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:49,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 15:33:49,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066274271] [2020-10-13 15:33:49,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:49,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:49,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916992662] [2020-10-13 15:33:49,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:49,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:49,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:49,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:49,231 INFO L87 Difference]: Start difference. First operand 738 states and 1178 transitions. Second operand 5 states. [2020-10-13 15:33:50,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:50,143 INFO L93 Difference]: Finished difference Result 1632 states and 2594 transitions. [2020-10-13 15:33:50,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:50,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-13 15:33:50,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:50,148 INFO L225 Difference]: With dead ends: 1632 [2020-10-13 15:33:50,148 INFO L226 Difference]: Without dead ends: 910 [2020-10-13 15:33:50,150 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 15:33:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-10-13 15:33:50,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 784. [2020-10-13 15:33:50,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-10-13 15:33:50,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1256 transitions. [2020-10-13 15:33:50,163 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1256 transitions. Word has length 196 [2020-10-13 15:33:50,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:50,163 INFO L479 AbstractCegarLoop]: Abstraction has 784 states and 1256 transitions. [2020-10-13 15:33:50,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:50,164 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1256 transitions. [2020-10-13 15:33:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-13 15:33:50,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:50,165 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:50,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:33:50,165 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:50,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:50,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1207532881, now seen corresponding path program 1 times [2020-10-13 15:33:50,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:50,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193257057] [2020-10-13 15:33:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:50,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:50,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:50,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:52,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:55,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:55,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 15:33:55,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:33:55,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 15:33:55,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:55,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 15:33:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:33:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:55,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:55,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:55,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:55,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:55,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:55,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:55,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:55,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:55,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 15:33:55,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193257057] [2020-10-13 15:33:55,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:55,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:55,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981588651] [2020-10-13 15:33:55,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:55,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:55,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:55,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:55,327 INFO L87 Difference]: Start difference. First operand 784 states and 1256 transitions. Second operand 5 states. [2020-10-13 15:33:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:56,268 INFO L93 Difference]: Finished difference Result 1678 states and 2670 transitions. [2020-10-13 15:33:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:56,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-13 15:33:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:56,272 INFO L225 Difference]: With dead ends: 1678 [2020-10-13 15:33:56,272 INFO L226 Difference]: Without dead ends: 910 [2020-10-13 15:33:56,274 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 15:33:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-10-13 15:33:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 738. [2020-10-13 15:33:56,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-13 15:33:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1176 transitions. [2020-10-13 15:33:56,286 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1176 transitions. Word has length 196 [2020-10-13 15:33:56,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:56,286 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 1176 transitions. [2020-10-13 15:33:56,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:56,286 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1176 transitions. [2020-10-13 15:33:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-13 15:33:56,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:56,288 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:56,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:33:56,288 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:56,289 INFO L82 PathProgramCache]: Analyzing trace with hash 270578226, now seen corresponding path program 1 times [2020-10-13 15:33:56,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:56,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655089794] [2020-10-13 15:33:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:56,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:56,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:57,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-13 15:34:01,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 15:34:01,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 15:34:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:34:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:01,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:01,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:01,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 15:34:01,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655089794] [2020-10-13 15:34:01,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:01,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:01,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72901293] [2020-10-13 15:34:01,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:01,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:01,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:01,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:01,471 INFO L87 Difference]: Start difference. First operand 738 states and 1176 transitions. Second operand 5 states. [2020-10-13 15:34:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:02,372 INFO L93 Difference]: Finished difference Result 1626 states and 2580 transitions. [2020-10-13 15:34:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:02,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-13 15:34:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:02,375 INFO L225 Difference]: With dead ends: 1626 [2020-10-13 15:34:02,375 INFO L226 Difference]: Without dead ends: 904 [2020-10-13 15:34:02,378 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 15:34:02,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-10-13 15:34:02,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 786. [2020-10-13 15:34:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2020-10-13 15:34:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1256 transitions. [2020-10-13 15:34:02,394 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1256 transitions. Word has length 197 [2020-10-13 15:34:02,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:02,395 INFO L479 AbstractCegarLoop]: Abstraction has 786 states and 1256 transitions. [2020-10-13 15:34:02,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1256 transitions. [2020-10-13 15:34:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-13 15:34:02,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:02,399 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:02,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:34:02,400 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:02,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:02,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1657694476, now seen corresponding path program 1 times [2020-10-13 15:34:02,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:02,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600687769] [2020-10-13 15:34:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:02,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:02,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:07,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:07,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-13 15:34:07,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:34:07,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:34:07,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 15:34:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:34:07,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:07,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:07,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:07,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:07,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 15:34:07,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600687769] [2020-10-13 15:34:07,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:07,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:07,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144096773] [2020-10-13 15:34:07,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:07,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:07,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:07,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:07,534 INFO L87 Difference]: Start difference. First operand 786 states and 1256 transitions. Second operand 5 states. [2020-10-13 15:34:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:08,436 INFO L93 Difference]: Finished difference Result 1674 states and 2658 transitions. [2020-10-13 15:34:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:08,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-13 15:34:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:08,439 INFO L225 Difference]: With dead ends: 1674 [2020-10-13 15:34:08,439 INFO L226 Difference]: Without dead ends: 904 [2020-10-13 15:34:08,440 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 15:34:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-10-13 15:34:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 738. [2020-10-13 15:34:08,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-13 15:34:08,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1174 transitions. [2020-10-13 15:34:08,453 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1174 transitions. Word has length 197 [2020-10-13 15:34:08,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:08,453 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 1174 transitions. [2020-10-13 15:34:08,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:08,453 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1174 transitions. [2020-10-13 15:34:08,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 15:34:08,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:08,455 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:08,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:34:08,455 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:08,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:08,455 INFO L82 PathProgramCache]: Analyzing trace with hash 641204343, now seen corresponding path program 1 times [2020-10-13 15:34:08,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:08,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708231603] [2020-10-13 15:34:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:13,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:13,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 15:34:13,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:34:13,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 15:34:13,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 15:34:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:34:13,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:13,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:13,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:13,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:13,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:13,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:13,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:13,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-13 15:34:13,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708231603] [2020-10-13 15:34:13,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:13,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:13,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144091544] [2020-10-13 15:34:13,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:13,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:13,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:13,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:13,599 INFO L87 Difference]: Start difference. First operand 738 states and 1174 transitions. Second operand 5 states. [2020-10-13 15:34:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:14,329 INFO L93 Difference]: Finished difference Result 1506 states and 2388 transitions. [2020-10-13 15:34:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:14,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-13 15:34:14,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:14,332 INFO L225 Difference]: With dead ends: 1506 [2020-10-13 15:34:14,333 INFO L226 Difference]: Without dead ends: 784 [2020-10-13 15:34:14,334 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 15:34:14,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-13 15:34:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 738. [2020-10-13 15:34:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-13 15:34:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1172 transitions. [2020-10-13 15:34:14,352 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1172 transitions. Word has length 201 [2020-10-13 15:34:14,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:14,352 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 1172 transitions. [2020-10-13 15:34:14,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1172 transitions. [2020-10-13 15:34:14,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 15:34:14,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:14,355 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:14,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:34:14,355 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:14,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:14,355 INFO L82 PathProgramCache]: Analyzing trace with hash -416633735, now seen corresponding path program 1 times [2020-10-13 15:34:14,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:14,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061648229] [2020-10-13 15:34:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:14,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:19,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:19,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 15:34:19,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:34:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:34:19,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:19,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:19,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 15:34:19,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:34:19,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:19,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:19,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:19,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:19,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:19,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-13 15:34:19,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061648229] [2020-10-13 15:34:19,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:19,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:19,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137715723] [2020-10-13 15:34:19,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:19,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:19,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:19,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:19,497 INFO L87 Difference]: Start difference. First operand 738 states and 1172 transitions. Second operand 5 states.