/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_clnt.blast.01.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:59:02,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:59:02,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:59:02,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:59:02,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:59:02,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:59:02,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:59:02,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:59:02,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:59:02,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:59:02,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:59:02,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:59:02,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:59:02,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:59:02,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:59:02,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:59:02,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:59:02,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:59:02,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:59:02,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:59:02,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:59:02,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:59:02,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:59:02,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:59:02,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:59:02,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:59:02,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:59:02,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:59:02,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:59:02,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:59:02,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:59:02,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:59:02,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:59:02,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:59:02,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:59:02,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:59:02,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:59:02,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:59:02,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:59:02,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:59:02,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:59:02,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:59:02,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:59:02,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:59:02,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:59:02,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:59:02,700 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:59:02,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:59:02,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:59:02,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:59:02,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:59:02,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:59:02,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:59:02,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:59:02,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:59:02,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:59:02,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:59:02,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:59:02,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:59:02,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:59:02,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:59:02,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:59:02,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:59:02,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:59:02,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:59:02,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:59:02,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:59:02,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:59:02,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:59:02,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:59:02,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:59:02,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:59:03,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:59:03,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:59:03,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:59:03,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:59:03,059 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:59:03,060 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_clnt.blast.01.i.cil-1.c [2020-10-14 09:59:03,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fffbd6068/f62a6e4299e94865b6b55ca4a45ab35a/FLAGfdbc73e9c [2020-10-14 09:59:03,703 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:59:03,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_clnt.blast.01.i.cil-1.c [2020-10-14 09:59:03,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fffbd6068/f62a6e4299e94865b6b55ca4a45ab35a/FLAGfdbc73e9c [2020-10-14 09:59:03,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fffbd6068/f62a6e4299e94865b6b55ca4a45ab35a [2020-10-14 09:59:03,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:59:03,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:59:03,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:59:03,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:59:03,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:59:03,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:03" (1/1) ... [2020-10-14 09:59:03,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03, skipping insertion in model container [2020-10-14 09:59:03,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:03" (1/1) ... [2020-10-14 09:59:03,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:59:04,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:59:04,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:59:04,614 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:59:04,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:59:04,776 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:59:04,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04 WrapperNode [2020-10-14 09:59:04,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:59:04,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:59:04,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:59:04,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:59:04,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04" (1/1) ... [2020-10-14 09:59:04,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04" (1/1) ... [2020-10-14 09:59:04,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04" (1/1) ... [2020-10-14 09:59:04,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04" (1/1) ... [2020-10-14 09:59:04,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04" (1/1) ... [2020-10-14 09:59:04,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04" (1/1) ... [2020-10-14 09:59:04,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04" (1/1) ... [2020-10-14 09:59:05,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:59:05,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:59:05,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:59:05,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:59:05,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:59:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:59:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:59:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2020-10-14 09:59:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2020-10-14 09:59:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:59:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-14 09:59:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 09:59:05,126 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 09:59:05,127 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 09:59:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:59:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 09:59:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:59:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 09:59:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 09:59:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 09:59:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 09:59:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2020-10-14 09:59:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 09:59:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-14 09:59:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2020-10-14 09:59:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 09:59:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 09:59:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:59:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 09:59:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 09:59:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 09:59:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 09:59:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 09:59:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 09:59:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:59:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 09:59:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:59:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 09:59:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 09:59:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 09:59:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 09:59:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 09:59:05,788 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 09:59:06,423 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-14 09:59:06,423 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-14 09:59:06,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:59:06,449 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 09:59:06,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:06 BoogieIcfgContainer [2020-10-14 09:59:06,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:59:06,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:59:06,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:59:06,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:59:06,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:59:03" (1/3) ... [2020-10-14 09:59:06,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce06ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:06, skipping insertion in model container [2020-10-14 09:59:06,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04" (2/3) ... [2020-10-14 09:59:06,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce06ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:06, skipping insertion in model container [2020-10-14 09:59:06,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:06" (3/3) ... [2020-10-14 09:59:06,462 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.01.i.cil-1.c [2020-10-14 09:59:06,473 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:59:06,480 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:59:06,492 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:59:06,515 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:59:06,515 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:59:06,515 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:59:06,515 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:59:06,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:59:06,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:59:06,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:59:06,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:59:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states. [2020-10-14 09:59:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 09:59:06,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:06,544 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] [2020-10-14 09:59:06,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:06,549 INFO L82 PathProgramCache]: Analyzing trace with hash 735003307, now seen corresponding path program 1 times [2020-10-14 09:59:06,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:06,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460299720] [2020-10-14 09:59:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:06,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:07,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:07,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:07,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 09:59:07,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:59:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-10-14 09:59:07,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:07,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:07,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:59:07,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:59:07,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:59:07,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:59:08,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:59:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:08,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:08,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:08,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:59:08,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:59:08,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:59:08,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:08,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:59:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:59:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:59:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:59:08,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460299720] [2020-10-14 09:59:08,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:59:08,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:59:08,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672313542] [2020-10-14 09:59:08,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:59:08,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:59:08,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:59:08,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:59:08,075 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 4 states. [2020-10-14 09:59:08,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:59:08,919 INFO L93 Difference]: Finished difference Result 387 states and 641 transitions. [2020-10-14 09:59:08,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:59:08,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-14 09:59:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:59:08,936 INFO L225 Difference]: With dead ends: 387 [2020-10-14 09:59:08,937 INFO L226 Difference]: Without dead ends: 225 [2020-10-14 09:59:08,942 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 [2020-10-14 09:59:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-14 09:59:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2020-10-14 09:59:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-14 09:59:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 331 transitions. [2020-10-14 09:59:09,006 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 331 transitions. Word has length 30 [2020-10-14 09:59:09,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:59:09,006 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 331 transitions. [2020-10-14 09:59:09,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:59:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 331 transitions. [2020-10-14 09:59:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 09:59:09,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:09,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:59:09,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:59:09,010 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:09,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:09,011 INFO L82 PathProgramCache]: Analyzing trace with hash -754186144, now seen corresponding path program 1 times [2020-10-14 09:59:09,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:09,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140502182] [2020-10-14 09:59:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:09,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:12,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:12,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 09:59:12,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:59:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3013 [2020-10-14 09:59:12,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:12,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:59:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:59:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:59:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:59:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:12,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:12,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:12,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:59:12,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:59:12,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:59:12,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:12,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:59:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:59:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:59:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:59:12,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140502182] [2020-10-14 09:59:12,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:59:12,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:59:12,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386574942] [2020-10-14 09:59:12,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:59:12,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:59:12,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:59:12,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:59:12,143 INFO L87 Difference]: Start difference. First operand 225 states and 331 transitions. Second operand 4 states. [2020-10-14 09:59:12,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:59:12,722 INFO L93 Difference]: Finished difference Result 437 states and 650 transitions. [2020-10-14 09:59:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:59:12,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-14 09:59:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:59:12,728 INFO L225 Difference]: With dead ends: 437 [2020-10-14 09:59:12,728 INFO L226 Difference]: Without dead ends: 330 [2020-10-14 09:59:12,730 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 [2020-10-14 09:59:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-14 09:59:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2020-10-14 09:59:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-14 09:59:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 486 transitions. [2020-10-14 09:59:12,760 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 486 transitions. Word has length 45 [2020-10-14 09:59:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:59:12,761 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 486 transitions. [2020-10-14 09:59:12,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:59:12,761 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 486 transitions. [2020-10-14 09:59:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 09:59:12,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:12,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-14 09:59:12,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:59:12,766 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:12,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2087684521, now seen corresponding path program 1 times [2020-10-14 09:59:12,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:12,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436808188] [2020-10-14 09:59:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:12,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:13,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:15,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:15,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 09:59:15,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:59:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2529 [2020-10-14 09:59:15,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:15,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:59:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 09:59:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:59:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:59:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:15,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:15,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:59:15,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:59:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:59:15,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:15,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:59:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:59:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:59:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 09:59:15,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436808188] [2020-10-14 09:59:15,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:59:15,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:59:15,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706411622] [2020-10-14 09:59:15,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:59:15,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:59:15,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:59:15,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:59:15,445 INFO L87 Difference]: Start difference. First operand 330 states and 486 transitions. Second operand 4 states. [2020-10-14 09:59:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:59:15,962 INFO L93 Difference]: Finished difference Result 647 states and 960 transitions. [2020-10-14 09:59:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:59:15,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 09:59:15,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:59:15,967 INFO L225 Difference]: With dead ends: 647 [2020-10-14 09:59:15,967 INFO L226 Difference]: Without dead ends: 435 [2020-10-14 09:59:15,972 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 [2020-10-14 09:59:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-14 09:59:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2020-10-14 09:59:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-14 09:59:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 642 transitions. [2020-10-14 09:59:16,008 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 642 transitions. Word has length 63 [2020-10-14 09:59:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:59:16,012 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 642 transitions. [2020-10-14 09:59:16,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:59:16,012 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 642 transitions. [2020-10-14 09:59:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 09:59:16,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:16,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 09:59:16,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:59:16,022 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:16,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:16,022 INFO L82 PathProgramCache]: Analyzing trace with hash 61945750, now seen corresponding path program 1 times [2020-10-14 09:59:16,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:16,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390743729] [2020-10-14 09:59:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:16,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:16,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:17,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:21,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:21,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 09:59:21,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:59:21,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 09:59:21,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:21,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:59:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 09:59:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:59:21,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:59:21,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:59:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:21,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:21,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:21,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:59:21,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:59:21,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:59:21,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:21,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:59:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:59:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:59:21,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 09:59:21,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390743729] [2020-10-14 09:59:21,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:59:21,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:59:21,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39061976] [2020-10-14 09:59:21,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:59:21,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:59:21,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:59:21,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:59:21,204 INFO L87 Difference]: Start difference. First operand 435 states and 642 transitions. Second operand 4 states. [2020-10-14 09:59:21,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:59:21,755 INFO L93 Difference]: Finished difference Result 857 states and 1272 transitions. [2020-10-14 09:59:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:59:21,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-14 09:59:21,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:59:21,759 INFO L225 Difference]: With dead ends: 857 [2020-10-14 09:59:21,760 INFO L226 Difference]: Without dead ends: 540 [2020-10-14 09:59:21,762 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 [2020-10-14 09:59:21,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-14 09:59:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2020-10-14 09:59:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-10-14 09:59:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 799 transitions. [2020-10-14 09:59:21,782 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 799 transitions. Word has length 83 [2020-10-14 09:59:21,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:59:21,783 INFO L479 AbstractCegarLoop]: Abstraction has 540 states and 799 transitions. [2020-10-14 09:59:21,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:59:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 799 transitions. [2020-10-14 09:59:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:59:21,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:21,786 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2020-10-14 09:59:21,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:59:21,787 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:21,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:21,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1712368506, now seen corresponding path program 1 times [2020-10-14 09:59:21,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:21,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888171404] [2020-10-14 09:59:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:24,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:24,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 09:59:24,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:59:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3112 [2020-10-14 09:59:24,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:24,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:59:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 09:59:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:59:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:24,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:59:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:24,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:24,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:59:24,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:59:24,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:59:24,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:24,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:59:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:59:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:59:24,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-14 09:59:25,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888171404] [2020-10-14 09:59:25,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:59:25,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:59:25,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042342684] [2020-10-14 09:59:25,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:59:25,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:59:25,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:59:25,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:59:25,008 INFO L87 Difference]: Start difference. First operand 540 states and 799 transitions. Second operand 4 states. [2020-10-14 09:59:25,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:59:25,492 INFO L93 Difference]: Finished difference Result 647 states and 959 transitions. [2020-10-14 09:59:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:59:25,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 09:59:25,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:59:25,496 INFO L225 Difference]: With dead ends: 647 [2020-10-14 09:59:25,497 INFO L226 Difference]: Without dead ends: 645 [2020-10-14 09:59:25,497 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 [2020-10-14 09:59:25,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-10-14 09:59:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2020-10-14 09:59:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-10-14 09:59:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 957 transitions. [2020-10-14 09:59:25,518 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 957 transitions. Word has length 104 [2020-10-14 09:59:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:59:25,518 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 957 transitions. [2020-10-14 09:59:25,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:59:25,518 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 957 transitions. [2020-10-14 09:59:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 09:59:25,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:25,521 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:59:25,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:59:25,521 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:25,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1119771695, now seen corresponding path program 1 times [2020-10-14 09:59:25,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:25,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687885626] [2020-10-14 09:59:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:25,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:30,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:30,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 09:59:30,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:59:30,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:59:30,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:30,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:59:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 09:59:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:59:30,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:30,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:59:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:30,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:30,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:30,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:59:30,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:59:30,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:59:30,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:30,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:30,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:59:30,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:59:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:59:30,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-14 09:59:30,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687885626] [2020-10-14 09:59:30,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:59:30,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:59:30,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374135442] [2020-10-14 09:59:30,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:59:30,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:59:30,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:59:30,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:59:30,717 INFO L87 Difference]: Start difference. First operand 645 states and 957 transitions. Second operand 5 states. [2020-10-14 09:59:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:59:31,780 INFO L93 Difference]: Finished difference Result 1831 states and 2735 transitions. [2020-10-14 09:59:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:59:31,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-14 09:59:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:59:31,788 INFO L225 Difference]: With dead ends: 1831 [2020-10-14 09:59:31,788 INFO L226 Difference]: Without dead ends: 1199 [2020-10-14 09:59:31,790 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 [2020-10-14 09:59:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-10-14 09:59:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 801. [2020-10-14 09:59:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2020-10-14 09:59:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1233 transitions. [2020-10-14 09:59:31,824 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1233 transitions. Word has length 130 [2020-10-14 09:59:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:59:31,825 INFO L479 AbstractCegarLoop]: Abstraction has 801 states and 1233 transitions. [2020-10-14 09:59:31,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:59:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1233 transitions. [2020-10-14 09:59:31,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 09:59:31,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:31,827 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:59:31,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:59:31,828 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:31,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:31,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1445584410, now seen corresponding path program 1 times [2020-10-14 09:59:31,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:31,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713364652] [2020-10-14 09:59:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:31,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:32,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:36,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:36,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 09:59:36,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:59:36,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:59:36,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:36,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:59:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 09:59:36,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:59:36,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:59:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:36,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:36,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:36,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:59:36,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:59:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:59:36,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:36,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:59:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:59:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:59:36,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-14 09:59:36,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713364652] [2020-10-14 09:59:36,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:59:36,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:59:36,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769136582] [2020-10-14 09:59:36,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:59:36,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:59:36,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:59:36,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:59:36,984 INFO L87 Difference]: Start difference. First operand 801 states and 1233 transitions. Second operand 5 states. [2020-10-14 09:59:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:59:38,291 INFO L93 Difference]: Finished difference Result 1963 states and 2973 transitions. [2020-10-14 09:59:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:59:38,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-14 09:59:38,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:59:38,298 INFO L225 Difference]: With dead ends: 1963 [2020-10-14 09:59:38,298 INFO L226 Difference]: Without dead ends: 1175 [2020-10-14 09:59:38,301 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 [2020-10-14 09:59:38,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-10-14 09:59:38,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 807. [2020-10-14 09:59:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-10-14 09:59:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1239 transitions. [2020-10-14 09:59:38,329 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1239 transitions. Word has length 131 [2020-10-14 09:59:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:59:38,330 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1239 transitions. [2020-10-14 09:59:38,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:59:38,330 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1239 transitions. [2020-10-14 09:59:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 09:59:38,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:38,336 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 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] [2020-10-14 09:59:38,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:59:38,336 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:38,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:38,337 INFO L82 PathProgramCache]: Analyzing trace with hash 528420239, now seen corresponding path program 1 times [2020-10-14 09:59:38,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:38,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398784775] [2020-10-14 09:59:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:38,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:38,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:43,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:43,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 09:59:43,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:59:43,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-14 09:59:43,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:43,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:59:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 09:59:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:59:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:59:43,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:59:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:43,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:43,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:59:43,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:59:43,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:59:43,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:43,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:59:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:59:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:59:43,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:59:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 09:59:43,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398784775] [2020-10-14 09:59:43,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:59:43,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:59:43,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696756598] [2020-10-14 09:59:43,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:59:43,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:59:43,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:59:43,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:59:43,585 INFO L87 Difference]: Start difference. First operand 807 states and 1239 transitions. Second operand 5 states. [2020-10-14 09:59:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:59:44,861 INFO L93 Difference]: Finished difference Result 2161 states and 3305 transitions. [2020-10-14 09:59:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:59:44,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 09:59:44,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:59:44,870 INFO L225 Difference]: With dead ends: 2161 [2020-10-14 09:59:44,870 INFO L226 Difference]: Without dead ends: 1367 [2020-10-14 09:59:44,873 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 [2020-10-14 09:59:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2020-10-14 09:59:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 933. [2020-10-14 09:59:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-10-14 09:59:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1449 transitions. [2020-10-14 09:59:44,947 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1449 transitions. Word has length 145 [2020-10-14 09:59:44,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:59:44,947 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1449 transitions. [2020-10-14 09:59:44,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:59:44,947 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1449 transitions. [2020-10-14 09:59:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 09:59:44,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:44,951 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 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] [2020-10-14 09:59:44,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:59:44,952 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:44,952 INFO L82 PathProgramCache]: Analyzing trace with hash -94861363, now seen corresponding path program 1 times [2020-10-14 09:59:44,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:44,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958809258] [2020-10-14 09:59:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:50,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:50,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 09:59:50,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:59:50,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:59:50,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:50,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:59:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 09:59:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 09:59:50,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 09:59:50,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:59:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:50,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:50,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:59:50,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:59:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 09:59:50,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:50,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:59:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:59:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:59:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:59:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-14 09:59:50,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958809258] [2020-10-14 09:59:50,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:59:50,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:59:50,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974322193] [2020-10-14 09:59:50,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:59:50,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:59:50,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:59:50,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:59:50,140 INFO L87 Difference]: Start difference. First operand 933 states and 1449 transitions. Second operand 6 states. [2020-10-14 09:59:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:59:51,090 INFO L93 Difference]: Finished difference Result 2051 states and 3175 transitions. [2020-10-14 09:59:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:59:51,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-10-14 09:59:51,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:59:51,097 INFO L225 Difference]: With dead ends: 2051 [2020-10-14 09:59:51,097 INFO L226 Difference]: Without dead ends: 1131 [2020-10-14 09:59:51,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:59:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2020-10-14 09:59:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1035. [2020-10-14 09:59:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-14 09:59:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1617 transitions. [2020-10-14 09:59:51,142 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1617 transitions. Word has length 145 [2020-10-14 09:59:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:59:51,143 INFO L479 AbstractCegarLoop]: Abstraction has 1035 states and 1617 transitions. [2020-10-14 09:59:51,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:59:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1617 transitions. [2020-10-14 09:59:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 09:59:51,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:51,147 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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] [2020-10-14 09:59:51,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:59:51,147 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:51,147 INFO L82 PathProgramCache]: Analyzing trace with hash -226178610, now seen corresponding path program 1 times [2020-10-14 09:59:51,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:51,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016696415] [2020-10-14 09:59:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:56,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:56,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 09:59:56,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:59:56,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:59:56,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:56,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:56,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:59:56,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 09:59:56,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:59:56,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:59:56,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:59:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:56,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:59:56,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:59:56,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:59:56,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:59:56,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:59:56,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:59:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:59:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:59:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:59:56,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:59:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 09:59:56,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016696415] [2020-10-14 09:59:56,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:59:56,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:59:56,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730270815] [2020-10-14 09:59:56,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:59:56,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:59:56,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:59:56,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:59:56,282 INFO L87 Difference]: Start difference. First operand 1035 states and 1617 transitions. Second operand 5 states. [2020-10-14 09:59:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:59:57,553 INFO L93 Difference]: Finished difference Result 2611 states and 4055 transitions. [2020-10-14 09:59:57,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:59:57,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 09:59:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:59:57,563 INFO L225 Difference]: With dead ends: 2611 [2020-10-14 09:59:57,563 INFO L226 Difference]: Without dead ends: 1589 [2020-10-14 09:59:57,566 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 [2020-10-14 09:59:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-10-14 09:59:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1191. [2020-10-14 09:59:57,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-10-14 09:59:57,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1893 transitions. [2020-10-14 09:59:57,615 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1893 transitions. Word has length 145 [2020-10-14 09:59:57,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:59:57,616 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1893 transitions. [2020-10-14 09:59:57,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:59:57,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1893 transitions. [2020-10-14 09:59:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 09:59:57,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:59:57,623 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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] [2020-10-14 09:59:57,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:59:57,623 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:59:57,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:59:57,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1624169381, now seen corresponding path program 1 times [2020-10-14 09:59:57,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:59:57,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664173474] [2020-10-14 09:59:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:59:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:59:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:57,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:58,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:59:58,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:02,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:02,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 10:00:02,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:00:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:00:02,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:02,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:00:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 10:00:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 10:00:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:02,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:02,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:02,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:02,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:02,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:02,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:02,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:02,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 10:00:02,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664173474] [2020-10-14 10:00:02,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:02,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:02,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709651259] [2020-10-14 10:00:02,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:02,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:02,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:02,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:02,752 INFO L87 Difference]: Start difference. First operand 1191 states and 1893 transitions. Second operand 5 states. [2020-10-14 10:00:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:03,764 INFO L93 Difference]: Finished difference Result 2743 states and 4293 transitions. [2020-10-14 10:00:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:03,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 10:00:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:03,773 INFO L225 Difference]: With dead ends: 2743 [2020-10-14 10:00:03,773 INFO L226 Difference]: Without dead ends: 1565 [2020-10-14 10:00:03,776 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 [2020-10-14 10:00:03,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-10-14 10:00:03,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1035. [2020-10-14 10:00:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-14 10:00:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1617 transitions. [2020-10-14 10:00:03,817 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1617 transitions. Word has length 146 [2020-10-14 10:00:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:03,818 INFO L479 AbstractCegarLoop]: Abstraction has 1035 states and 1617 transitions. [2020-10-14 10:00:03,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1617 transitions. [2020-10-14 10:00:03,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 10:00:03,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:03,822 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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] [2020-10-14 10:00:03,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:00:03,822 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:03,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:03,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1119961178, now seen corresponding path program 1 times [2020-10-14 10:00:03,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:03,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590540652] [2020-10-14 10:00:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:03,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:03,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:03,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:05,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:08,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:08,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 10:00:08,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:00:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:00:08,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:08,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 10:00:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:00:08,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:08,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:08,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:08,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:08,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:08,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:08,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:08,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:08,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-14 10:00:08,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590540652] [2020-10-14 10:00:08,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:08,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:08,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107966985] [2020-10-14 10:00:08,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:08,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:08,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:08,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:08,942 INFO L87 Difference]: Start difference. First operand 1035 states and 1617 transitions. Second operand 5 states. [2020-10-14 10:00:10,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:10,020 INFO L93 Difference]: Finished difference Result 2491 states and 3845 transitions. [2020-10-14 10:00:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:10,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 10:00:10,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:10,028 INFO L225 Difference]: With dead ends: 2491 [2020-10-14 10:00:10,029 INFO L226 Difference]: Without dead ends: 1469 [2020-10-14 10:00:10,031 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 [2020-10-14 10:00:10,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2020-10-14 10:00:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1071. [2020-10-14 10:00:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-10-14 10:00:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1683 transitions. [2020-10-14 10:00:10,069 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1683 transitions. Word has length 148 [2020-10-14 10:00:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:10,070 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1683 transitions. [2020-10-14 10:00:10,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1683 transitions. [2020-10-14 10:00:10,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 10:00:10,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:10,074 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:00:10,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:00:10,074 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:10,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:10,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1601041436, now seen corresponding path program 1 times [2020-10-14 10:00:10,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:10,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70375116] [2020-10-14 10:00:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:10,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:15,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:15,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:15,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 10:00:15,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:00:15,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:00:15,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:15,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 10:00:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:00:15,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:15,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:15,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:15,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:15,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:15,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:15,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:15,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-14 10:00:15,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70375116] [2020-10-14 10:00:15,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:15,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:15,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717390343] [2020-10-14 10:00:15,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:15,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:15,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:15,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:15,188 INFO L87 Difference]: Start difference. First operand 1071 states and 1683 transitions. Second operand 5 states. [2020-10-14 10:00:16,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:16,315 INFO L93 Difference]: Finished difference Result 2683 states and 4187 transitions. [2020-10-14 10:00:16,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:16,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 10:00:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:16,325 INFO L225 Difference]: With dead ends: 2683 [2020-10-14 10:00:16,326 INFO L226 Difference]: Without dead ends: 1625 [2020-10-14 10:00:16,329 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 [2020-10-14 10:00:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-10-14 10:00:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1191. [2020-10-14 10:00:16,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-10-14 10:00:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1893 transitions. [2020-10-14 10:00:16,401 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1893 transitions. Word has length 148 [2020-10-14 10:00:16,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:16,402 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1893 transitions. [2020-10-14 10:00:16,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:16,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1893 transitions. [2020-10-14 10:00:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 10:00:16,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:16,406 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 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] [2020-10-14 10:00:16,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:00:16,406 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:16,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:16,407 INFO L82 PathProgramCache]: Analyzing trace with hash -506586726, now seen corresponding path program 1 times [2020-10-14 10:00:16,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:16,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520723445] [2020-10-14 10:00:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:16,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:16,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:16,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:16,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:16,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:21,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:21,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 10:00:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:00:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 10:00:21,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:21,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:00:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 10:00:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:00:21,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:21,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:21,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:21,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:21,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:21,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:21,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:21,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:21,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-14 10:00:21,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520723445] [2020-10-14 10:00:21,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:21,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:21,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92373130] [2020-10-14 10:00:21,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:21,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:21,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:21,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:21,532 INFO L87 Difference]: Start difference. First operand 1191 states and 1893 transitions. Second operand 5 states. [2020-10-14 10:00:22,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:22,494 INFO L93 Difference]: Finished difference Result 2923 states and 4607 transitions. [2020-10-14 10:00:22,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:22,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 10:00:22,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:22,503 INFO L225 Difference]: With dead ends: 2923 [2020-10-14 10:00:22,503 INFO L226 Difference]: Without dead ends: 1745 [2020-10-14 10:00:22,506 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 [2020-10-14 10:00:22,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2020-10-14 10:00:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1191. [2020-10-14 10:00:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-10-14 10:00:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1893 transitions. [2020-10-14 10:00:22,545 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1893 transitions. Word has length 148 [2020-10-14 10:00:22,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:22,545 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1893 transitions. [2020-10-14 10:00:22,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1893 transitions. [2020-10-14 10:00:22,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 10:00:22,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:22,549 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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] [2020-10-14 10:00:22,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:00:22,550 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:22,550 INFO L82 PathProgramCache]: Analyzing trace with hash 733342083, now seen corresponding path program 1 times [2020-10-14 10:00:22,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:22,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729210691] [2020-10-14 10:00:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:22,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:22,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:23,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:27,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:27,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 10:00:27,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:00:27,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 10:00:27,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:27,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 10:00:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 10:00:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:27,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:27,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:27,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:27,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:27,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:27,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:27,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:27,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:27,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:27,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-14 10:00:27,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729210691] [2020-10-14 10:00:27,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:27,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:27,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825911450] [2020-10-14 10:00:27,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:27,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:27,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:27,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:27,675 INFO L87 Difference]: Start difference. First operand 1191 states and 1893 transitions. Second operand 5 states. [2020-10-14 10:00:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:28,647 INFO L93 Difference]: Finished difference Result 2779 states and 4359 transitions. [2020-10-14 10:00:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:28,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-14 10:00:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:28,655 INFO L225 Difference]: With dead ends: 2779 [2020-10-14 10:00:28,655 INFO L226 Difference]: Without dead ends: 1601 [2020-10-14 10:00:28,661 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 [2020-10-14 10:00:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2020-10-14 10:00:28,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1191. [2020-10-14 10:00:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-10-14 10:00:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1893 transitions. [2020-10-14 10:00:28,696 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1893 transitions. Word has length 149 [2020-10-14 10:00:28,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:28,696 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1893 transitions. [2020-10-14 10:00:28,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1893 transitions. [2020-10-14 10:00:28,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 10:00:28,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:28,700 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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] [2020-10-14 10:00:28,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:00:28,700 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:28,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:28,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1295244027, now seen corresponding path program 1 times [2020-10-14 10:00:28,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:28,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594893343] [2020-10-14 10:00:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:28,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:28,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 10:00:33,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:00:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:00:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:33,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 10:00:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 10:00:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:33,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:33,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:33,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:33,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:33,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:33,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:33,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:33,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:33,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-14 10:00:33,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594893343] [2020-10-14 10:00:33,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:33,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:33,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832938864] [2020-10-14 10:00:33,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:33,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:33,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:33,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:33,804 INFO L87 Difference]: Start difference. First operand 1191 states and 1893 transitions. Second operand 5 states. [2020-10-14 10:00:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:34,791 INFO L93 Difference]: Finished difference Result 2899 states and 4569 transitions. [2020-10-14 10:00:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:34,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-14 10:00:34,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:34,801 INFO L225 Difference]: With dead ends: 2899 [2020-10-14 10:00:34,801 INFO L226 Difference]: Without dead ends: 1721 [2020-10-14 10:00:34,805 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 [2020-10-14 10:00:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2020-10-14 10:00:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1191. [2020-10-14 10:00:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-10-14 10:00:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1893 transitions. [2020-10-14 10:00:34,842 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1893 transitions. Word has length 149 [2020-10-14 10:00:34,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:34,842 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1893 transitions. [2020-10-14 10:00:34,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1893 transitions. [2020-10-14 10:00:34,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 10:00:34,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:34,846 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 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] [2020-10-14 10:00:34,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:00:34,847 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:34,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1726886385, now seen corresponding path program 1 times [2020-10-14 10:00:34,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:34,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897069802] [2020-10-14 10:00:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:34,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:34,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:36,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:39,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:39,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:39,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 10:00:39,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:00:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:00:39,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:39,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:00:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 10:00:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:00:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:39,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:39,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:39,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:39,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:39,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:00:39,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:39,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-14 10:00:39,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897069802] [2020-10-14 10:00:39,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:39,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:39,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146134698] [2020-10-14 10:00:39,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:39,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:39,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:39,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:39,956 INFO L87 Difference]: Start difference. First operand 1191 states and 1893 transitions. Second operand 5 states. [2020-10-14 10:00:40,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:40,860 INFO L93 Difference]: Finished difference Result 2743 states and 4293 transitions. [2020-10-14 10:00:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:40,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-14 10:00:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:40,869 INFO L225 Difference]: With dead ends: 2743 [2020-10-14 10:00:40,869 INFO L226 Difference]: Without dead ends: 1565 [2020-10-14 10:00:40,872 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 [2020-10-14 10:00:40,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-10-14 10:00:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1035. [2020-10-14 10:00:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-14 10:00:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1617 transitions. [2020-10-14 10:00:40,907 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1617 transitions. Word has length 149 [2020-10-14 10:00:40,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:40,908 INFO L479 AbstractCegarLoop]: Abstraction has 1035 states and 1617 transitions. [2020-10-14 10:00:40,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:40,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1617 transitions. [2020-10-14 10:00:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 10:00:40,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:40,911 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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] [2020-10-14 10:00:40,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:00:40,912 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:40,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:40,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1241410900, now seen corresponding path program 1 times [2020-10-14 10:00:40,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:40,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628816183] [2020-10-14 10:00:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:41,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:41,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:42,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:42,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 10:00:42,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-14 10:00:42,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:42,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:00:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:00:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:42,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:42,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:42,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:42,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:42,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:42,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:42,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:42,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:42,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:42,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:42,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:42,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:00:42,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628816183] [2020-10-14 10:00:42,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:42,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:42,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579299898] [2020-10-14 10:00:42,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:42,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:42,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:42,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:42,189 INFO L87 Difference]: Start difference. First operand 1035 states and 1617 transitions. Second operand 5 states. [2020-10-14 10:00:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:43,201 INFO L93 Difference]: Finished difference Result 2617 states and 4061 transitions. [2020-10-14 10:00:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:43,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 10:00:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:43,210 INFO L225 Difference]: With dead ends: 2617 [2020-10-14 10:00:43,210 INFO L226 Difference]: Without dead ends: 1595 [2020-10-14 10:00:43,214 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 [2020-10-14 10:00:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2020-10-14 10:00:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1185. [2020-10-14 10:00:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2020-10-14 10:00:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1875 transitions. [2020-10-14 10:00:43,262 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1875 transitions. Word has length 152 [2020-10-14 10:00:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:43,263 INFO L479 AbstractCegarLoop]: Abstraction has 1185 states and 1875 transitions. [2020-10-14 10:00:43,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1875 transitions. [2020-10-14 10:00:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 10:00:43,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:43,267 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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] [2020-10-14 10:00:43,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:00:43,267 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:43,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1375424406, now seen corresponding path program 1 times [2020-10-14 10:00:43,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:43,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819841412] [2020-10-14 10:00:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:43,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:43,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:44,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:44,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 10:00:44,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:44,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-10-14 10:00:44,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:44,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:00:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:00:44,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:44,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:44,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:44,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:44,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:44,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:44,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:00:44,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819841412] [2020-10-14 10:00:44,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:44,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:44,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585374986] [2020-10-14 10:00:44,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:44,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:44,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:44,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:44,652 INFO L87 Difference]: Start difference. First operand 1185 states and 1875 transitions. Second operand 5 states. [2020-10-14 10:00:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:45,663 INFO L93 Difference]: Finished difference Result 2911 states and 4571 transitions. [2020-10-14 10:00:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:45,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 10:00:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:45,672 INFO L225 Difference]: With dead ends: 2911 [2020-10-14 10:00:45,672 INFO L226 Difference]: Without dead ends: 1739 [2020-10-14 10:00:45,675 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 [2020-10-14 10:00:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2020-10-14 10:00:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1179. [2020-10-14 10:00:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-10-14 10:00:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1869 transitions. [2020-10-14 10:00:45,718 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1869 transitions. Word has length 152 [2020-10-14 10:00:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:45,719 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1869 transitions. [2020-10-14 10:00:45,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1869 transitions. [2020-10-14 10:00:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 10:00:45,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:45,722 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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] [2020-10-14 10:00:45,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:00:45,723 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:45,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:45,723 INFO L82 PathProgramCache]: Analyzing trace with hash 166549867, now seen corresponding path program 1 times [2020-10-14 10:00:45,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:45,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371948715] [2020-10-14 10:00:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:45,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:46,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:46,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 10:00:46,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:46,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-14 10:00:46,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:46,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:46,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:46,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:00:46,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:00:46,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:46,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:46,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:47,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:47,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:47,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:47,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:47,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:00:47,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371948715] [2020-10-14 10:00:47,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:47,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:47,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670559812] [2020-10-14 10:00:47,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:47,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:47,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:47,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:47,021 INFO L87 Difference]: Start difference. First operand 1179 states and 1869 transitions. Second operand 5 states. [2020-10-14 10:00:48,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:48,021 INFO L93 Difference]: Finished difference Result 2885 states and 4539 transitions. [2020-10-14 10:00:48,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:48,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 10:00:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:48,030 INFO L225 Difference]: With dead ends: 2885 [2020-10-14 10:00:48,030 INFO L226 Difference]: Without dead ends: 1719 [2020-10-14 10:00:48,033 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 [2020-10-14 10:00:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-10-14 10:00:48,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1335. [2020-10-14 10:00:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-14 10:00:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 2133 transitions. [2020-10-14 10:00:48,078 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 2133 transitions. Word has length 153 [2020-10-14 10:00:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:48,079 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 2133 transitions. [2020-10-14 10:00:48,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 2133 transitions. [2020-10-14 10:00:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 10:00:48,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:48,082 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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] [2020-10-14 10:00:48,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:00:48,083 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:48,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:48,083 INFO L82 PathProgramCache]: Analyzing trace with hash 307098477, now seen corresponding path program 1 times [2020-10-14 10:00:48,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:48,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211767439] [2020-10-14 10:00:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:48,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:48,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:49,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:49,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 10:00:49,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1605 [2020-10-14 10:00:49,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:49,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:00:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:00:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:49,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:49,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:49,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:00:49,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:49,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:00:49,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211767439] [2020-10-14 10:00:49,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:49,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:49,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891459647] [2020-10-14 10:00:49,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:49,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:49,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:49,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:49,816 INFO L87 Difference]: Start difference. First operand 1335 states and 2133 transitions. Second operand 5 states. [2020-10-14 10:00:50,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:50,769 INFO L93 Difference]: Finished difference Result 3047 states and 4809 transitions. [2020-10-14 10:00:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:50,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 10:00:50,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:50,778 INFO L225 Difference]: With dead ends: 3047 [2020-10-14 10:00:50,778 INFO L226 Difference]: Without dead ends: 1725 [2020-10-14 10:00:50,781 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 [2020-10-14 10:00:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2020-10-14 10:00:50,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1185. [2020-10-14 10:00:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2020-10-14 10:00:50,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1875 transitions. [2020-10-14 10:00:50,823 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1875 transitions. Word has length 153 [2020-10-14 10:00:50,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:50,824 INFO L479 AbstractCegarLoop]: Abstraction has 1185 states and 1875 transitions. [2020-10-14 10:00:50,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1875 transitions. [2020-10-14 10:00:50,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 10:00:50,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:50,828 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 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] [2020-10-14 10:00:50,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:00:50,828 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:50,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:50,828 INFO L82 PathProgramCache]: Analyzing trace with hash -572379071, now seen corresponding path program 1 times [2020-10-14 10:00:50,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:50,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423696369] [2020-10-14 10:00:50,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:52,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:55,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:55,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 10:00:55,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:00:55,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 10:00:55,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:55,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:55,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:00:55,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 10:00:55,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:00:55,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:55,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:55,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:55,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:55,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:55,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:55,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 10:00:55,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423696369] [2020-10-14 10:00:55,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:55,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:55,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737345639] [2020-10-14 10:00:55,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:55,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:55,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:55,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:55,942 INFO L87 Difference]: Start difference. First operand 1185 states and 1875 transitions. Second operand 5 states. [2020-10-14 10:00:56,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:56,889 INFO L93 Difference]: Finished difference Result 2887 states and 4527 transitions. [2020-10-14 10:00:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:56,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-14 10:00:56,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:56,896 INFO L225 Difference]: With dead ends: 2887 [2020-10-14 10:00:56,897 INFO L226 Difference]: Without dead ends: 1715 [2020-10-14 10:00:56,899 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 [2020-10-14 10:00:56,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2020-10-14 10:00:56,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1329. [2020-10-14 10:00:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-10-14 10:00:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 2127 transitions. [2020-10-14 10:00:56,942 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 2127 transitions. Word has length 167 [2020-10-14 10:00:56,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:56,943 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 2127 transitions. [2020-10-14 10:00:56,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:56,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 2127 transitions. [2020-10-14 10:00:56,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 10:00:56,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:56,949 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 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] [2020-10-14 10:00:56,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:00:56,949 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:56,950 INFO L82 PathProgramCache]: Analyzing trace with hash -568299914, now seen corresponding path program 1 times [2020-10-14 10:00:56,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:56,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696508827] [2020-10-14 10:00:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:56,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:58,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:58,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:01,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:01,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 10:01:01,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 10:01:01,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:01,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:01,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:01,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 10:01:01,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:01:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:02,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:02,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:02,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:02,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:02,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:01:02,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:02,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:02,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 10:01:02,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696508827] [2020-10-14 10:01:02,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:02,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:02,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331476249] [2020-10-14 10:01:02,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:02,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:02,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:02,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:02,093 INFO L87 Difference]: Start difference. First operand 1329 states and 2127 transitions. Second operand 5 states. [2020-10-14 10:01:03,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:03,075 INFO L93 Difference]: Finished difference Result 3011 states and 4753 transitions. [2020-10-14 10:01:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:03,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-14 10:01:03,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:03,084 INFO L225 Difference]: With dead ends: 3011 [2020-10-14 10:01:03,084 INFO L226 Difference]: Without dead ends: 1695 [2020-10-14 10:01:03,086 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 [2020-10-14 10:01:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2020-10-14 10:01:03,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1335. [2020-10-14 10:01:03,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-14 10:01:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 2133 transitions. [2020-10-14 10:01:03,126 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 2133 transitions. Word has length 168 [2020-10-14 10:01:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:03,127 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 2133 transitions. [2020-10-14 10:01:03,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 2133 transitions. [2020-10-14 10:01:03,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 10:01:03,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:03,131 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 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] [2020-10-14 10:01:03,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:01:03,131 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:03,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:03,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1581198305, now seen corresponding path program 1 times [2020-10-14 10:01:03,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:03,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336309724] [2020-10-14 10:01:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:03,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:03,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:03,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:06,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:08,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:08,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:01:08,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:08,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 10:01:08,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:08,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-14 10:01:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:01:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:08,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:08,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:08,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:08,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:08,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:08,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:01:08,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:08,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:08,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:08,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:08,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:08,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-14 10:01:08,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336309724] [2020-10-14 10:01:08,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:08,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:08,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277289309] [2020-10-14 10:01:08,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:08,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:08,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:08,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:08,249 INFO L87 Difference]: Start difference. First operand 1335 states and 2133 transitions. Second operand 5 states. [2020-10-14 10:01:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:09,227 INFO L93 Difference]: Finished difference Result 3067 states and 4833 transitions. [2020-10-14 10:01:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:09,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 10:01:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:09,232 INFO L225 Difference]: With dead ends: 3067 [2020-10-14 10:01:09,232 INFO L226 Difference]: Without dead ends: 1745 [2020-10-14 10:01:09,235 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 [2020-10-14 10:01:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2020-10-14 10:01:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1359. [2020-10-14 10:01:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-10-14 10:01:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 2175 transitions. [2020-10-14 10:01:09,284 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 2175 transitions. Word has length 170 [2020-10-14 10:01:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:09,284 INFO L479 AbstractCegarLoop]: Abstraction has 1359 states and 2175 transitions. [2020-10-14 10:01:09,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 2175 transitions. [2020-10-14 10:01:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 10:01:09,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:09,288 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:09,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:01:09,289 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:09,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1447184799, now seen corresponding path program 1 times [2020-10-14 10:01:09,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:09,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711745479] [2020-10-14 10:01:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:09,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:09,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:09,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:14,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:14,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:01:14,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:14,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:01:14,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:14,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-14 10:01:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:01:14,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:14,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:14,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:14,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:14,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:14,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:14,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:14,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-14 10:01:14,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711745479] [2020-10-14 10:01:14,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:14,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:14,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734902443] [2020-10-14 10:01:14,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:14,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:14,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:14,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:14,445 INFO L87 Difference]: Start difference. First operand 1359 states and 2175 transitions. Second operand 5 states. [2020-10-14 10:01:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:15,408 INFO L93 Difference]: Finished difference Result 3235 states and 5127 transitions. [2020-10-14 10:01:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:15,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 10:01:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:15,414 INFO L225 Difference]: With dead ends: 3235 [2020-10-14 10:01:15,414 INFO L226 Difference]: Without dead ends: 1889 [2020-10-14 10:01:15,417 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 [2020-10-14 10:01:15,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-10-14 10:01:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1479. [2020-10-14 10:01:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-10-14 10:01:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2385 transitions. [2020-10-14 10:01:15,467 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2385 transitions. Word has length 170 [2020-10-14 10:01:15,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:15,468 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2385 transitions. [2020-10-14 10:01:15,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:15,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2385 transitions. [2020-10-14 10:01:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 10:01:15,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:15,472 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 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, 1] [2020-10-14 10:01:15,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:01:15,473 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:15,473 INFO L82 PathProgramCache]: Analyzing trace with hash -268366123, now seen corresponding path program 1 times [2020-10-14 10:01:15,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:15,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834703715] [2020-10-14 10:01:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:15,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:15,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:16,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:20,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:20,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:01:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 10:01:20,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:20,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 10:01:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 10:01:20,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:20,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:20,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:20,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:20,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:20,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:20,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-14 10:01:20,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834703715] [2020-10-14 10:01:20,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:20,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:20,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886866099] [2020-10-14 10:01:20,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:20,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:20,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:20,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:20,602 INFO L87 Difference]: Start difference. First operand 1479 states and 2385 transitions. Second operand 5 states. [2020-10-14 10:01:21,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:21,569 INFO L93 Difference]: Finished difference Result 3475 states and 5547 transitions. [2020-10-14 10:01:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:21,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 10:01:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:21,575 INFO L225 Difference]: With dead ends: 3475 [2020-10-14 10:01:21,575 INFO L226 Difference]: Without dead ends: 2009 [2020-10-14 10:01:21,578 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 [2020-10-14 10:01:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2020-10-14 10:01:21,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1479. [2020-10-14 10:01:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-10-14 10:01:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2385 transitions. [2020-10-14 10:01:21,628 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2385 transitions. Word has length 170 [2020-10-14 10:01:21,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:21,629 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2385 transitions. [2020-10-14 10:01:21,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:21,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2385 transitions. [2020-10-14 10:01:21,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:01:21,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:21,633 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 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] [2020-10-14 10:01:21,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:01:21,633 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1768089302, now seen corresponding path program 1 times [2020-10-14 10:01:21,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:21,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315966669] [2020-10-14 10:01:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:21,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:22,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:25,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:26,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 10:01:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:01:26,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:26,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-14 10:01:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:01:26,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:26,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:26,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:26,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:26,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:26,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:26,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-14 10:01:26,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315966669] [2020-10-14 10:01:26,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:26,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:26,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581836468] [2020-10-14 10:01:26,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:26,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:26,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:26,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:26,796 INFO L87 Difference]: Start difference. First operand 1479 states and 2385 transitions. Second operand 5 states. [2020-10-14 10:01:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:27,757 INFO L93 Difference]: Finished difference Result 3335 states and 5311 transitions. [2020-10-14 10:01:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:27,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 10:01:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:27,761 INFO L225 Difference]: With dead ends: 3335 [2020-10-14 10:01:27,761 INFO L226 Difference]: Without dead ends: 1869 [2020-10-14 10:01:27,764 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 [2020-10-14 10:01:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2020-10-14 10:01:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1479. [2020-10-14 10:01:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-10-14 10:01:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2385 transitions. [2020-10-14 10:01:27,811 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2385 transitions. Word has length 171 [2020-10-14 10:01:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:27,811 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2385 transitions. [2020-10-14 10:01:27,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2385 transitions. [2020-10-14 10:01:27,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:01:27,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:27,816 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 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] [2020-10-14 10:01:27,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:01:27,816 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:27,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:27,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1908637912, now seen corresponding path program 1 times [2020-10-14 10:01:27,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:27,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026741779] [2020-10-14 10:01:27,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:28,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:32,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:32,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 10:01:32,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:32,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:01:32,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:32,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-14 10:01:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:01:32,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:32,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:32,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:32,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:32,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:32,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-14 10:01:32,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026741779] [2020-10-14 10:01:32,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:32,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:32,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741903435] [2020-10-14 10:01:32,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:32,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:32,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:32,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:32,960 INFO L87 Difference]: Start difference. First operand 1479 states and 2385 transitions. Second operand 5 states. [2020-10-14 10:01:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:33,955 INFO L93 Difference]: Finished difference Result 3455 states and 5521 transitions. [2020-10-14 10:01:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:33,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 10:01:33,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:33,961 INFO L225 Difference]: With dead ends: 3455 [2020-10-14 10:01:33,961 INFO L226 Difference]: Without dead ends: 1989 [2020-10-14 10:01:33,964 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 [2020-10-14 10:01:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2020-10-14 10:01:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1479. [2020-10-14 10:01:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-10-14 10:01:34,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2385 transitions. [2020-10-14 10:01:34,012 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2385 transitions. Word has length 171 [2020-10-14 10:01:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:34,012 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2385 transitions. [2020-10-14 10:01:34,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:34,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2385 transitions. [2020-10-14 10:01:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:01:34,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:34,015 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 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, 1, 1] [2020-10-14 10:01:34,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:01:34,016 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash 266166882, now seen corresponding path program 1 times [2020-10-14 10:01:34,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:34,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095853655] [2020-10-14 10:01:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:34,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:34,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:35,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:39,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:39,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 10:01:39,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:39,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:01:39,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:39,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 10:01:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:01:39,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:39,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:39,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:39,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:39,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:39,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-14 10:01:39,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095853655] [2020-10-14 10:01:39,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:39,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:39,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406205784] [2020-10-14 10:01:39,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:39,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:39,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:39,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:39,128 INFO L87 Difference]: Start difference. First operand 1479 states and 2385 transitions. Second operand 5 states. [2020-10-14 10:01:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:40,058 INFO L93 Difference]: Finished difference Result 3311 states and 5269 transitions. [2020-10-14 10:01:40,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:40,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 10:01:40,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:40,062 INFO L225 Difference]: With dead ends: 3311 [2020-10-14 10:01:40,062 INFO L226 Difference]: Without dead ends: 1845 [2020-10-14 10:01:40,064 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 [2020-10-14 10:01:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2020-10-14 10:01:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1335. [2020-10-14 10:01:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-14 10:01:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 2133 transitions. [2020-10-14 10:01:40,108 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 2133 transitions. Word has length 171 [2020-10-14 10:01:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:40,109 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 2133 transitions. [2020-10-14 10:01:40,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 2133 transitions. [2020-10-14 10:01:40,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 10:01:40,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:40,112 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:40,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:01:40,113 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1697350350, now seen corresponding path program 1 times [2020-10-14 10:01:40,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:40,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731518811] [2020-10-14 10:01:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:40,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:40,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 10:01:42,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:01:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2076 [2020-10-14 10:01:42,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:42,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:01:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:01:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:42,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:42,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:42,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:42,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:42,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:01:42,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731518811] [2020-10-14 10:01:42,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:42,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:42,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142232239] [2020-10-14 10:01:42,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:42,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:42,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:42,334 INFO L87 Difference]: Start difference. First operand 1335 states and 2133 transitions. Second operand 5 states. [2020-10-14 10:01:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:43,421 INFO L93 Difference]: Finished difference Result 3197 states and 5061 transitions. [2020-10-14 10:01:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:43,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-14 10:01:43,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:43,424 INFO L225 Difference]: With dead ends: 3197 [2020-10-14 10:01:43,424 INFO L226 Difference]: Without dead ends: 1875 [2020-10-14 10:01:43,427 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 [2020-10-14 10:01:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-10-14 10:01:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1473. [2020-10-14 10:01:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1473 states. [2020-10-14 10:01:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2367 transitions. [2020-10-14 10:01:43,483 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 2367 transitions. Word has length 173 [2020-10-14 10:01:43,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:43,484 INFO L479 AbstractCegarLoop]: Abstraction has 1473 states and 2367 transitions. [2020-10-14 10:01:43,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 2367 transitions. [2020-10-14 10:01:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 10:01:43,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:43,488 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:43,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:01:43,488 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:43,489 INFO L82 PathProgramCache]: Analyzing trace with hash -803864012, now seen corresponding path program 1 times [2020-10-14 10:01:43,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:43,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864860518] [2020-10-14 10:01:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:43,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:45,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:45,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 10:01:45,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:01:45,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2108 [2020-10-14 10:01:45,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:45,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:45,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:45,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:01:45,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:01:45,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:45,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:45,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:45,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:45,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:45,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:45,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:01:45,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:45,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:45,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:45,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:45,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:45,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:01:45,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864860518] [2020-10-14 10:01:45,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:45,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:45,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175755822] [2020-10-14 10:01:45,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:45,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:45,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:45,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:45,720 INFO L87 Difference]: Start difference. First operand 1473 states and 2367 transitions. Second operand 5 states. [2020-10-14 10:01:46,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:46,768 INFO L93 Difference]: Finished difference Result 3335 states and 5289 transitions. [2020-10-14 10:01:46,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:46,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-14 10:01:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:46,771 INFO L225 Difference]: With dead ends: 3335 [2020-10-14 10:01:46,771 INFO L226 Difference]: Without dead ends: 1875 [2020-10-14 10:01:46,774 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 [2020-10-14 10:01:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-10-14 10:01:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1335. [2020-10-14 10:01:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-14 10:01:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 2127 transitions. [2020-10-14 10:01:46,827 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 2127 transitions. Word has length 173 [2020-10-14 10:01:46,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:46,827 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 2127 transitions. [2020-10-14 10:01:46,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 2127 transitions. [2020-10-14 10:01:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 10:01:46,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:46,831 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 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] [2020-10-14 10:01:46,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:01:46,831 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:46,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:46,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1514761421, now seen corresponding path program 1 times [2020-10-14 10:01:46,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:46,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743605740] [2020-10-14 10:01:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:46,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:47,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:48,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:48,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 10:01:48,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:01:48,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1957 [2020-10-14 10:01:48,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:48,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:48,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:48,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:01:48,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 10:01:48,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:48,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:48,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:48,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:48,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:48,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:48,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:01:48,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743605740] [2020-10-14 10:01:48,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:48,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:48,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033236493] [2020-10-14 10:01:48,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:48,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:48,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:48,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:48,903 INFO L87 Difference]: Start difference. First operand 1335 states and 2127 transitions. Second operand 5 states. [2020-10-14 10:01:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:49,938 INFO L93 Difference]: Finished difference Result 3179 states and 5022 transitions. [2020-10-14 10:01:49,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:49,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-14 10:01:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:49,942 INFO L225 Difference]: With dead ends: 3179 [2020-10-14 10:01:49,942 INFO L226 Difference]: Without dead ends: 1857 [2020-10-14 10:01:49,944 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 [2020-10-14 10:01:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-10-14 10:01:49,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1479. [2020-10-14 10:01:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-10-14 10:01:49,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2367 transitions. [2020-10-14 10:01:49,978 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2367 transitions. Word has length 174 [2020-10-14 10:01:49,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:49,979 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2367 transitions. [2020-10-14 10:01:49,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:49,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2367 transitions. [2020-10-14 10:01:49,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 10:01:49,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:49,982 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 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] [2020-10-14 10:01:49,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:01:49,982 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:49,983 INFO L82 PathProgramCache]: Analyzing trace with hash 413511281, now seen corresponding path program 1 times [2020-10-14 10:01:49,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:49,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76587123] [2020-10-14 10:01:49,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:50,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:51,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:51,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 10:01:51,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:01:51,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1915 [2020-10-14 10:01:51,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:51,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:51,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:51,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:01:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 10:01:51,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:51,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:51,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:51,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:01:51,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:51,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:51,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:01:52,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76587123] [2020-10-14 10:01:52,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:52,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:52,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527534851] [2020-10-14 10:01:52,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:52,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:52,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:52,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:52,007 INFO L87 Difference]: Start difference. First operand 1479 states and 2367 transitions. Second operand 5 states. [2020-10-14 10:01:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:52,994 INFO L93 Difference]: Finished difference Result 3323 states and 5256 transitions. [2020-10-14 10:01:52,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:52,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-14 10:01:52,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:52,998 INFO L225 Difference]: With dead ends: 3323 [2020-10-14 10:01:52,998 INFO L226 Difference]: Without dead ends: 1857 [2020-10-14 10:01:53,000 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 [2020-10-14 10:01:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-10-14 10:01:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1335. [2020-10-14 10:01:53,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-14 10:01:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 2121 transitions. [2020-10-14 10:01:53,040 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 2121 transitions. Word has length 174 [2020-10-14 10:01:53,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:53,040 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 2121 transitions. [2020-10-14 10:01:53,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:53,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 2121 transitions. [2020-10-14 10:01:53,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:01:53,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:53,044 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:53,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:01:53,044 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:53,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:53,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1154153224, now seen corresponding path program 1 times [2020-10-14 10:01:53,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:53,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339967838] [2020-10-14 10:01:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:53,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:53,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:53,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:55,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:58,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:58,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:01:58,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:58,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 10:01:58,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:58,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:01:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:01:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 10:01:58,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:58,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:58,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:58,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:58,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:58,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:01:58,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:58,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:58,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:01:58,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339967838] [2020-10-14 10:01:58,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:58,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:58,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053322977] [2020-10-14 10:01:58,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:58,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:58,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:58,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:58,191 INFO L87 Difference]: Start difference. First operand 1335 states and 2121 transitions. Second operand 5 states. [2020-10-14 10:01:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:59,198 INFO L93 Difference]: Finished difference Result 3179 states and 5004 transitions. [2020-10-14 10:01:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:59,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:01:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:59,202 INFO L225 Difference]: With dead ends: 3179 [2020-10-14 10:01:59,202 INFO L226 Difference]: Without dead ends: 1857 [2020-10-14 10:01:59,204 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 [2020-10-14 10:01:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-10-14 10:01:59,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1533. [2020-10-14 10:01:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1533 states. [2020-10-14 10:01:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2451 transitions. [2020-10-14 10:01:59,260 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2451 transitions. Word has length 183 [2020-10-14 10:01:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:59,261 INFO L479 AbstractCegarLoop]: Abstraction has 1533 states and 2451 transitions. [2020-10-14 10:01:59,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2451 transitions. [2020-10-14 10:01:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:01:59,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:59,263 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:59,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:01:59,264 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:59,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1151694059, now seen corresponding path program 1 times [2020-10-14 10:01:59,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:59,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287898301] [2020-10-14 10:01:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:01,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:04,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:04,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:02:04,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:04,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 10:02:04,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:04,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:04,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:02:04,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:02:04,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 10:02:04,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:04,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:04,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:04,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:04,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:04,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:04,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:02:04,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287898301] [2020-10-14 10:02:04,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:04,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:04,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000096331] [2020-10-14 10:02:04,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:04,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:04,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:04,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:04,403 INFO L87 Difference]: Start difference. First operand 1533 states and 2451 transitions. Second operand 5 states. [2020-10-14 10:02:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:05,393 INFO L93 Difference]: Finished difference Result 3377 states and 5328 transitions. [2020-10-14 10:02:05,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:05,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:02:05,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:05,397 INFO L225 Difference]: With dead ends: 3377 [2020-10-14 10:02:05,398 INFO L226 Difference]: Without dead ends: 1857 [2020-10-14 10:02:05,400 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 [2020-10-14 10:02:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-10-14 10:02:05,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1545. [2020-10-14 10:02:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-10-14 10:02:05,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2469 transitions. [2020-10-14 10:02:05,464 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2469 transitions. Word has length 183 [2020-10-14 10:02:05,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:05,464 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 2469 transitions. [2020-10-14 10:02:05,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:05,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2469 transitions. [2020-10-14 10:02:05,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:02:05,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:05,468 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:05,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:02:05,468 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:05,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:05,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1754028662, now seen corresponding path program 1 times [2020-10-14 10:02:05,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:05,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106003175] [2020-10-14 10:02:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:05,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:05,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:07,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:07,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:02:07,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:02:07,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1680 [2020-10-14 10:02:07,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:07,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:02:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 10:02:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:02:07,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:07,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:07,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:07,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:02:07,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:07,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:07,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-14 10:02:07,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106003175] [2020-10-14 10:02:07,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:07,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:07,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358253935] [2020-10-14 10:02:07,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:07,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:07,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:07,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:07,310 INFO L87 Difference]: Start difference. First operand 1545 states and 2469 transitions. Second operand 5 states. [2020-10-14 10:02:08,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:08,442 INFO L93 Difference]: Finished difference Result 3643 states and 5771 transitions. [2020-10-14 10:02:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:08,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 10:02:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:08,447 INFO L225 Difference]: With dead ends: 3643 [2020-10-14 10:02:08,447 INFO L226 Difference]: Without dead ends: 2111 [2020-10-14 10:02:08,450 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 [2020-10-14 10:02:08,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2020-10-14 10:02:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 1701. [2020-10-14 10:02:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-10-14 10:02:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2733 transitions. [2020-10-14 10:02:08,493 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2733 transitions. Word has length 183 [2020-10-14 10:02:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:08,493 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2733 transitions. [2020-10-14 10:02:08,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2733 transitions. [2020-10-14 10:02:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 10:02:08,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:08,496 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:08,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:02:08,496 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:08,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:08,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1620015156, now seen corresponding path program 1 times [2020-10-14 10:02:08,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:08,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706643507] [2020-10-14 10:02:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:08,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:08,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:13,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:13,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 10:02:13,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:13,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4685 [2020-10-14 10:02:13,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:13,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:02:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 10:02:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:02:13,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:13,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:13,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:13,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:13,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:02:13,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:13,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:02:13,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706643507] [2020-10-14 10:02:13,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:13,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 10:02:13,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259342130] [2020-10-14 10:02:13,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 10:02:13,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:13,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 10:02:13,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:02:13,646 INFO L87 Difference]: Start difference. First operand 1701 states and 2733 transitions. Second operand 7 states. [2020-10-14 10:02:16,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:16,044 INFO L93 Difference]: Finished difference Result 5329 states and 8554 transitions. [2020-10-14 10:02:16,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 10:02:16,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2020-10-14 10:02:16,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:16,050 INFO L225 Difference]: With dead ends: 5329 [2020-10-14 10:02:16,050 INFO L226 Difference]: Without dead ends: 3641 [2020-10-14 10:02:16,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:02:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2020-10-14 10:02:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 1929. [2020-10-14 10:02:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1929 states. [2020-10-14 10:02:16,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3105 transitions. [2020-10-14 10:02:16,144 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3105 transitions. Word has length 183 [2020-10-14 10:02:16,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:16,144 INFO L479 AbstractCegarLoop]: Abstraction has 1929 states and 3105 transitions. [2020-10-14 10:02:16,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 10:02:16,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3105 transitions. [2020-10-14 10:02:16,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:02:16,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:16,149 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2020-10-14 10:02:16,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:02:16,150 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:16,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:16,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2050035413, now seen corresponding path program 1 times [2020-10-14 10:02:16,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:16,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766263223] [2020-10-14 10:02:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:16,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:02:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:02:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 10:02:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:21,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:21,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:21,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:21,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:21,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:21,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:21,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:21,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:21,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:21,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:21,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:02:21,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766263223] [2020-10-14 10:02:21,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:21,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:21,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125335049] [2020-10-14 10:02:21,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:21,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:21,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:21,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:21,291 INFO L87 Difference]: Start difference. First operand 1929 states and 3105 transitions. Second operand 5 states. [2020-10-14 10:02:22,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:22,313 INFO L93 Difference]: Finished difference Result 4139 states and 6588 transitions. [2020-10-14 10:02:22,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:22,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:02:22,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:22,318 INFO L225 Difference]: With dead ends: 4139 [2020-10-14 10:02:22,318 INFO L226 Difference]: Without dead ends: 2223 [2020-10-14 10:02:22,321 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 [2020-10-14 10:02:22,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-10-14 10:02:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 1929. [2020-10-14 10:02:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1929 states. [2020-10-14 10:02:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3099 transitions. [2020-10-14 10:02:22,392 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3099 transitions. Word has length 184 [2020-10-14 10:02:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:22,392 INFO L479 AbstractCegarLoop]: Abstraction has 1929 states and 3099 transitions. [2020-10-14 10:02:22,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3099 transitions. [2020-10-14 10:02:22,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:02:22,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:22,395 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2020-10-14 10:02:22,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 10:02:22,395 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:22,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1455268429, now seen corresponding path program 1 times [2020-10-14 10:02:22,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:22,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050311521] [2020-10-14 10:02:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:22,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:24,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:24,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:02:24,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:02:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1592 [2020-10-14 10:02:24,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:24,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:02:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 10:02:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:02:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:24,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:24,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:24,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:24,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:24,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:24,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:24,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:24,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-14 10:02:24,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050311521] [2020-10-14 10:02:24,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:24,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:24,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733576565] [2020-10-14 10:02:24,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:24,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:24,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:24,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:24,150 INFO L87 Difference]: Start difference. First operand 1929 states and 3099 transitions. Second operand 5 states. [2020-10-14 10:02:25,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:25,303 INFO L93 Difference]: Finished difference Result 4235 states and 6741 transitions. [2020-10-14 10:02:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:25,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 10:02:25,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:25,307 INFO L225 Difference]: With dead ends: 4235 [2020-10-14 10:02:25,307 INFO L226 Difference]: Without dead ends: 2319 [2020-10-14 10:02:25,310 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 [2020-10-14 10:02:25,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-10-14 10:02:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 1923. [2020-10-14 10:02:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1923 states. [2020-10-14 10:02:25,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 3093 transitions. [2020-10-14 10:02:25,363 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 3093 transitions. Word has length 184 [2020-10-14 10:02:25,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:25,363 INFO L479 AbstractCegarLoop]: Abstraction has 1923 states and 3093 transitions. [2020-10-14 10:02:25,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 3093 transitions. [2020-10-14 10:02:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 10:02:25,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:25,366 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 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] [2020-10-14 10:02:25,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 10:02:25,366 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:25,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1849532093, now seen corresponding path program 1 times [2020-10-14 10:02:25,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:25,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900168290] [2020-10-14 10:02:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:25,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:25,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:25,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:26,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:30,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:30,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 10:02:30,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:02:30,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:30,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 10:02:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:02:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:30,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:30,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:30,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:30,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:30,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 10:02:30,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900168290] [2020-10-14 10:02:30,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:30,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:30,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648937511] [2020-10-14 10:02:30,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:30,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:30,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:30,471 INFO L87 Difference]: Start difference. First operand 1923 states and 3093 transitions. Second operand 5 states. [2020-10-14 10:02:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:31,533 INFO L93 Difference]: Finished difference Result 4343 states and 6931 transitions. [2020-10-14 10:02:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:31,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 10:02:31,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:31,537 INFO L225 Difference]: With dead ends: 4343 [2020-10-14 10:02:31,537 INFO L226 Difference]: Without dead ends: 2433 [2020-10-14 10:02:31,540 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 [2020-10-14 10:02:31,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2020-10-14 10:02:31,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2055. [2020-10-14 10:02:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2020-10-14 10:02:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3321 transitions. [2020-10-14 10:02:31,618 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3321 transitions. Word has length 188 [2020-10-14 10:02:31,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:31,619 INFO L479 AbstractCegarLoop]: Abstraction has 2055 states and 3321 transitions. [2020-10-14 10:02:31,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3321 transitions. [2020-10-14 10:02:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 10:02:31,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:31,623 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 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] [2020-10-14 10:02:31,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 10:02:31,623 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:31,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1064411912, now seen corresponding path program 1 times [2020-10-14 10:02:31,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:31,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906109376] [2020-10-14 10:02:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:31,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:32,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:36,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:36,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 10:02:36,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:02:36,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:36,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 10:02:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 10:02:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:36,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:36,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:36,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:36,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:36,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:36,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 10:02:36,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906109376] [2020-10-14 10:02:36,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:36,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:36,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860944377] [2020-10-14 10:02:36,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:36,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:36,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:36,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:36,735 INFO L87 Difference]: Start difference. First operand 2055 states and 3321 transitions. Second operand 5 states. [2020-10-14 10:02:37,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:37,753 INFO L93 Difference]: Finished difference Result 4457 states and 7132 transitions. [2020-10-14 10:02:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:37,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-14 10:02:37,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:37,757 INFO L225 Difference]: With dead ends: 4457 [2020-10-14 10:02:37,757 INFO L226 Difference]: Without dead ends: 2415 [2020-10-14 10:02:37,760 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 [2020-10-14 10:02:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2020-10-14 10:02:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2061. [2020-10-14 10:02:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-14 10:02:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3327 transitions. [2020-10-14 10:02:37,823 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3327 transitions. Word has length 189 [2020-10-14 10:02:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:37,823 INFO L479 AbstractCegarLoop]: Abstraction has 2061 states and 3327 transitions. [2020-10-14 10:02:37,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3327 transitions. [2020-10-14 10:02:37,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 10:02:37,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:37,826 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:37,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 10:02:37,826 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:37,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:37,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1676347161, now seen corresponding path program 1 times [2020-10-14 10:02:37,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:37,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722417470] [2020-10-14 10:02:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:37,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:42,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:42,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 10:02:42,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 10:02:42,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:42,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:02:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:02:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:02:42,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:42,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:42,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:42,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:42,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:42,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:42,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:42,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:42,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-14 10:02:42,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722417470] [2020-10-14 10:02:42,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:42,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:42,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523318199] [2020-10-14 10:02:42,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:42,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:42,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:42,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:42,981 INFO L87 Difference]: Start difference. First operand 2061 states and 3327 transitions. Second operand 5 states. [2020-10-14 10:02:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:44,077 INFO L93 Difference]: Finished difference Result 4403 states and 7032 transitions. [2020-10-14 10:02:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:44,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-14 10:02:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:44,080 INFO L225 Difference]: With dead ends: 4403 [2020-10-14 10:02:44,080 INFO L226 Difference]: Without dead ends: 2355 [2020-10-14 10:02:44,083 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 [2020-10-14 10:02:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2020-10-14 10:02:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2073. [2020-10-14 10:02:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2020-10-14 10:02:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3345 transitions. [2020-10-14 10:02:44,151 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3345 transitions. Word has length 189 [2020-10-14 10:02:44,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:44,151 INFO L479 AbstractCegarLoop]: Abstraction has 2073 states and 3345 transitions. [2020-10-14 10:02:44,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:44,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3345 transitions. [2020-10-14 10:02:44,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 10:02:44,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:44,154 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:44,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 10:02:44,154 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:44,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:44,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1560490679, now seen corresponding path program 1 times [2020-10-14 10:02:44,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:44,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376885053] [2020-10-14 10:02:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:44,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:47,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking...