/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_clnt.blast.02.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:50:27,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:50:27,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:50:27,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:50:27,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:50:27,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:50:27,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:50:27,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:50:27,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:50:27,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:50:27,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:50:27,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:50:27,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:50:27,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:50:27,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:50:27,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:50:27,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:50:27,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:50:27,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:50:27,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:50:27,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:50:27,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:50:27,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:50:27,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:50:27,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:50:27,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:50:27,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:50:27,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:50:27,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:50:27,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:50:27,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:50:27,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:50:27,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:50:27,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:50:27,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:50:27,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:50:27,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:50:27,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:50:27,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:50:27,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:50:27,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:50:27,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:50:27,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:50:27,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:50:27,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:50:27,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:50:27,582 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:50:27,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:50:27,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:50:27,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:50:27,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:50:27,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:50:27,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:50:27,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:50:27,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:50:27,584 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:50:27,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:50:27,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:50:27,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:50:27,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:50:27,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:50:27,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:50:27,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:50:27,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:50:27,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:50:27,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:50:27,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:50:27,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:50:27,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:50:27,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:50:27,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:50:27,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:50:27,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:50:27,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:50:27,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:50:27,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:50:27,918 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:50:27,918 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_clnt.blast.02.i.cil-2.c [2020-10-12 20:50:27,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be782251e/0e529ee58c1c42129ff3b73a737f1282/FLAG69b64fd33 [2020-10-12 20:50:28,554 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:50:28,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_clnt.blast.02.i.cil-2.c [2020-10-12 20:50:28,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be782251e/0e529ee58c1c42129ff3b73a737f1282/FLAG69b64fd33 [2020-10-12 20:50:28,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be782251e/0e529ee58c1c42129ff3b73a737f1282 [2020-10-12 20:50:28,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:50:28,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:50:28,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:50:28,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:50:28,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:50:28,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:50:28" (1/1) ... [2020-10-12 20:50:28,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35272ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:28, skipping insertion in model container [2020-10-12 20:50:28,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:50:28" (1/1) ... [2020-10-12 20:50:28,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:50:28,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:50:29,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:50:29,457 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:50:29,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:50:29,616 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:50:29,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:29 WrapperNode [2020-10-12 20:50:29,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:50:29,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:50:29,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:50:29,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:50:29,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:29" (1/1) ... [2020-10-12 20:50:29,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:29" (1/1) ... [2020-10-12 20:50:29,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:29" (1/1) ... [2020-10-12 20:50:29,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:29" (1/1) ... [2020-10-12 20:50:29,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:29" (1/1) ... [2020-10-12 20:50:29,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:29" (1/1) ... [2020-10-12 20:50:29,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:29" (1/1) ... [2020-10-12 20:50:29,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:50:29,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:50:29,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:50:29,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:50:29,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:50:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:50:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:50:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2020-10-12 20:50:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2020-10-12 20:50:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:50:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-12 20:50:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:50:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:50:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:50:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:50:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:50:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:50:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:50:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:50:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:50:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:50:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2020-10-12 20:50:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:50:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-12 20:50:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2020-10-12 20:50:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:50:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:50:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:50:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:50:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:50:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:50:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:50:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:50:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:50:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:50:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:50:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:50:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:50:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:50:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:50:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:50:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:50:30,653 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:50:31,224 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-12 20:50:31,224 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-12 20:50:31,248 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:50:31,248 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:50:31,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:50:31 BoogieIcfgContainer [2020-10-12 20:50:31,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:50:31,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:50:31,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:50:31,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:50:31,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:50:28" (1/3) ... [2020-10-12 20:50:31,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5cea87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:50:31, skipping insertion in model container [2020-10-12 20:50:31,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:29" (2/3) ... [2020-10-12 20:50:31,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5cea87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:50:31, skipping insertion in model container [2020-10-12 20:50:31,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:50:31" (3/3) ... [2020-10-12 20:50:31,262 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.02.i.cil-2.c [2020-10-12 20:50:31,273 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:50:31,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:50:31,295 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:50:31,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:50:31,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:50:31,321 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:50:31,321 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:50:31,321 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:50:31,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:50:31,322 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:50:31,322 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:50:31,344 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-10-12 20:50:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 20:50:31,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:31,353 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] [2020-10-12 20:50:31,353 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:31,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:31,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1671955434, now seen corresponding path program 1 times [2020-10-12 20:50:31,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:31,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413238517] [2020-10-12 20:50:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:31,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:31,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:32,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:32,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:32,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 20:50:32,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:32,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1231 [2020-10-12 20:50:32,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:50:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 20:50:32,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:50:33,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:33,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:33,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:33,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:33,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:50:33,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:50:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:50:33,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413238517] [2020-10-12 20:50:33,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:33,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:33,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948589399] [2020-10-12 20:50:33,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:33,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:33,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:33,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:33,120 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 5 states. [2020-10-12 20:50:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:33,926 INFO L93 Difference]: Finished difference Result 267 states and 442 transitions. [2020-10-12 20:50:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:33,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-12 20:50:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:33,942 INFO L225 Difference]: With dead ends: 267 [2020-10-12 20:50:33,942 INFO L226 Difference]: Without dead ends: 122 [2020-10-12 20:50:33,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:50:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-12 20:50:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-12 20:50:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 20:50:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 178 transitions. [2020-10-12 20:50:34,024 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 178 transitions. Word has length 30 [2020-10-12 20:50:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:34,025 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 178 transitions. [2020-10-12 20:50:34,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 178 transitions. [2020-10-12 20:50:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 20:50:34,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:34,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:34,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:50:34,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:34,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1881881790, now seen corresponding path program 1 times [2020-10-12 20:50:34,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:34,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875349846] [2020-10-12 20:50:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:36,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:37,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:37,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 20:50:37,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:50:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3588 [2020-10-12 20:50:37,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 20:50:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:50:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:50:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:37,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:37,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:37,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:37,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:50:37,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:37,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:50:37,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875349846] [2020-10-12 20:50:37,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:50:37,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:50:37,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005239368] [2020-10-12 20:50:37,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:50:37,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:37,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:50:37,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:50:37,981 INFO L87 Difference]: Start difference. First operand 121 states and 178 transitions. Second operand 9 states. [2020-10-12 20:50:39,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:39,954 INFO L93 Difference]: Finished difference Result 355 states and 530 transitions. [2020-10-12 20:50:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:50:39,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-12 20:50:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:39,958 INFO L225 Difference]: With dead ends: 355 [2020-10-12 20:50:39,958 INFO L226 Difference]: Without dead ends: 250 [2020-10-12 20:50:39,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:50:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-12 20:50:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 228. [2020-10-12 20:50:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-12 20:50:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 346 transitions. [2020-10-12 20:50:39,983 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 346 transitions. Word has length 44 [2020-10-12 20:50:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:39,984 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 346 transitions. [2020-10-12 20:50:39,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:50:39,984 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 346 transitions. [2020-10-12 20:50:39,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 20:50:39,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:39,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:39,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:50:39,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:39,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:39,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1436001558, now seen corresponding path program 1 times [2020-10-12 20:50:39,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:39,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303042235] [2020-10-12 20:50:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:40,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:40,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:40,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 20:50:40,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-10-12 20:50:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:50:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 20:50:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:50:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:40,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:40,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:41,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:41,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:41,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:41,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:41,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 20:50:41,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303042235] [2020-10-12 20:50:41,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:41,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:41,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372091495] [2020-10-12 20:50:41,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:41,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:41,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:41,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:41,015 INFO L87 Difference]: Start difference. First operand 228 states and 346 transitions. Second operand 5 states. [2020-10-12 20:50:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:41,760 INFO L93 Difference]: Finished difference Result 512 states and 782 transitions. [2020-10-12 20:50:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:41,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-12 20:50:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:41,764 INFO L225 Difference]: With dead ends: 512 [2020-10-12 20:50:41,765 INFO L226 Difference]: Without dead ends: 300 [2020-10-12 20:50:41,766 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 [2020-10-12 20:50:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-12 20:50:41,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 264. [2020-10-12 20:50:41,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-12 20:50:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 406 transitions. [2020-10-12 20:50:41,800 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 406 transitions. Word has length 59 [2020-10-12 20:50:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:41,801 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 406 transitions. [2020-10-12 20:50:41,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 406 transitions. [2020-10-12 20:50:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:50:41,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:41,804 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:41,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:50:41,805 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:41,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:41,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1981200425, now seen corresponding path program 1 times [2020-10-12 20:50:41,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:41,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774681376] [2020-10-12 20:50:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:41,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:42,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:42,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:42,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:50:42,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:50:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-12 20:50:42,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:50:42,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:42,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:42,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:42,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:42,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:50:42,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:42,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:42,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774681376] [2020-10-12 20:50:42,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:42,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:42,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344895719] [2020-10-12 20:50:42,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:42,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:42,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:42,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:42,910 INFO L87 Difference]: Start difference. First operand 264 states and 406 transitions. Second operand 5 states. [2020-10-12 20:50:43,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:43,884 INFO L93 Difference]: Finished difference Result 692 states and 1071 transitions. [2020-10-12 20:50:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:43,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-12 20:50:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:43,888 INFO L225 Difference]: With dead ends: 692 [2020-10-12 20:50:43,888 INFO L226 Difference]: Without dead ends: 444 [2020-10-12 20:50:43,890 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 [2020-10-12 20:50:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-12 20:50:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 314. [2020-10-12 20:50:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-12 20:50:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 492 transitions. [2020-10-12 20:50:43,908 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 492 transitions. Word has length 77 [2020-10-12 20:50:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:43,909 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 492 transitions. [2020-10-12 20:50:43,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 492 transitions. [2020-10-12 20:50:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:50:43,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:43,916 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:43,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:50:43,916 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:43,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1847186919, now seen corresponding path program 1 times [2020-10-12 20:50:43,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:43,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547748286] [2020-10-12 20:50:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:45,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:45,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:50:45,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-12 20:50:45,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:50:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:45,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:45,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:45,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:45,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:45,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:46,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547748286] [2020-10-12 20:50:46,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:46,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:46,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122506133] [2020-10-12 20:50:46,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:46,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:46,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:46,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:46,009 INFO L87 Difference]: Start difference. First operand 314 states and 492 transitions. Second operand 5 states. [2020-10-12 20:50:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:46,924 INFO L93 Difference]: Finished difference Result 698 states and 1096 transitions. [2020-10-12 20:50:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:46,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-12 20:50:46,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:46,932 INFO L225 Difference]: With dead ends: 698 [2020-10-12 20:50:46,932 INFO L226 Difference]: Without dead ends: 400 [2020-10-12 20:50:46,934 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 [2020-10-12 20:50:46,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-12 20:50:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 354. [2020-10-12 20:50:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-12 20:50:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 560 transitions. [2020-10-12 20:50:46,951 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 560 transitions. Word has length 77 [2020-10-12 20:50:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:46,952 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 560 transitions. [2020-10-12 20:50:46,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:46,952 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 560 transitions. [2020-10-12 20:50:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:50:46,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:46,957 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:46,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:50:46,958 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:46,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:46,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1282985264, now seen corresponding path program 1 times [2020-10-12 20:50:46,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:46,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166975093] [2020-10-12 20:50:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:47,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:47,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:47,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:47,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:50:47,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:50:47,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-12 20:50:47,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:47,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:47,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:47,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:50:47,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:47,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:47,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:47,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:47,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:47,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:47,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:47,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:47,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166975093] [2020-10-12 20:50:47,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:47,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:47,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432013796] [2020-10-12 20:50:47,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:47,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:47,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:47,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:47,820 INFO L87 Difference]: Start difference. First operand 354 states and 560 transitions. Second operand 5 states. [2020-10-12 20:50:48,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:48,710 INFO L93 Difference]: Finished difference Result 814 states and 1282 transitions. [2020-10-12 20:50:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:48,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:50:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:48,715 INFO L225 Difference]: With dead ends: 814 [2020-10-12 20:50:48,716 INFO L226 Difference]: Without dead ends: 476 [2020-10-12 20:50:48,717 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 [2020-10-12 20:50:48,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-12 20:50:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 356. [2020-10-12 20:50:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-12 20:50:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 562 transitions. [2020-10-12 20:50:48,733 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 562 transitions. Word has length 78 [2020-10-12 20:50:48,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:48,734 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 562 transitions. [2020-10-12 20:50:48,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 562 transitions. [2020-10-12 20:50:48,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:50:48,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:48,741 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:48,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:50:48,741 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:48,742 INFO L82 PathProgramCache]: Analyzing trace with hash -173217286, now seen corresponding path program 1 times [2020-10-12 20:50:48,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:48,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467945103] [2020-10-12 20:50:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:49,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:52,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:52,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:50:52,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:50:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3915 [2020-10-12 20:50:52,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:52,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:52,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:50:52,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:52,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:52,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:52,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:52,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:52,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:50:52,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:52,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:52,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:52,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:52,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:52,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467945103] [2020-10-12 20:50:52,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:52,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:52,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097798938] [2020-10-12 20:50:52,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:52,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:52,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:52,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:52,836 INFO L87 Difference]: Start difference. First operand 356 states and 562 transitions. Second operand 5 states. [2020-10-12 20:50:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:53,795 INFO L93 Difference]: Finished difference Result 816 states and 1282 transitions. [2020-10-12 20:50:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:53,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:50:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:53,802 INFO L225 Difference]: With dead ends: 816 [2020-10-12 20:50:53,802 INFO L226 Difference]: Without dead ends: 476 [2020-10-12 20:50:53,804 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 [2020-10-12 20:50:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-12 20:50:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 356. [2020-10-12 20:50:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-12 20:50:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 560 transitions. [2020-10-12 20:50:53,820 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 560 transitions. Word has length 95 [2020-10-12 20:50:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:53,821 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 560 transitions. [2020-10-12 20:50:53,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:53,821 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 560 transitions. [2020-10-12 20:50:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:50:53,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:53,825 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:53,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:50:53,825 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:53,826 INFO L82 PathProgramCache]: Analyzing trace with hash 74929208, now seen corresponding path program 1 times [2020-10-12 20:50:53,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:53,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699128185] [2020-10-12 20:50:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:54,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:55,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:55,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:50:55,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-12 20:50:55,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:50:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 20:50:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:50:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:55,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:55,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:55,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:55,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:55,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 20:50:55,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699128185] [2020-10-12 20:50:55,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:55,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:55,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96845738] [2020-10-12 20:50:55,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:55,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:55,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:55,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:55,184 INFO L87 Difference]: Start difference. First operand 356 states and 560 transitions. Second operand 5 states. [2020-10-12 20:50:55,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:55,955 INFO L93 Difference]: Finished difference Result 792 states and 1248 transitions. [2020-10-12 20:50:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:55,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:50:55,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:55,958 INFO L225 Difference]: With dead ends: 792 [2020-10-12 20:50:55,959 INFO L226 Difference]: Without dead ends: 452 [2020-10-12 20:50:55,961 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 [2020-10-12 20:50:55,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-12 20:50:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 400. [2020-10-12 20:50:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 20:50:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 636 transitions. [2020-10-12 20:50:55,980 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 636 transitions. Word has length 95 [2020-10-12 20:50:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:55,980 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 636 transitions. [2020-10-12 20:50:55,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 636 transitions. [2020-10-12 20:50:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 20:50:55,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:55,983 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:55,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:50:55,983 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:55,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:55,983 INFO L82 PathProgramCache]: Analyzing trace with hash -816476748, now seen corresponding path program 1 times [2020-10-12 20:50:55,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:55,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94415325] [2020-10-12 20:50:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:56,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:57,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:57,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 20:50:57,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:57,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1140 [2020-10-12 20:50:57,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:57,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:57,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:50:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:57,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:57,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:57,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:57,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:57,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94415325] [2020-10-12 20:50:57,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:57,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:57,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652298201] [2020-10-12 20:50:57,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:57,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:57,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:57,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:57,249 INFO L87 Difference]: Start difference. First operand 400 states and 636 transitions. Second operand 5 states. [2020-10-12 20:50:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:58,538 INFO L93 Difference]: Finished difference Result 904 states and 1430 transitions. [2020-10-12 20:50:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:58,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-12 20:50:58,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:58,544 INFO L225 Difference]: With dead ends: 904 [2020-10-12 20:50:58,544 INFO L226 Difference]: Without dead ends: 520 [2020-10-12 20:50:58,546 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 [2020-10-12 20:50:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-10-12 20:50:58,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 400. [2020-10-12 20:50:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 20:50:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 634 transitions. [2020-10-12 20:50:58,566 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 634 transitions. Word has length 98 [2020-10-12 20:50:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:58,566 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 634 transitions. [2020-10-12 20:50:58,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 634 transitions. [2020-10-12 20:50:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 20:50:58,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:58,568 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:58,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:50:58,568 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:58,569 INFO L82 PathProgramCache]: Analyzing trace with hash 838505069, now seen corresponding path program 1 times [2020-10-12 20:50:58,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:58,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860468347] [2020-10-12 20:50:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:59,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:59,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:50:59,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:59,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-10-12 20:50:59,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:50:59,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:59,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:59,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:59,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:59,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:59,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:50:59,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:59,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:59,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:59,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:59,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860468347] [2020-10-12 20:50:59,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:59,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:59,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217714864] [2020-10-12 20:50:59,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:59,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:59,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:59,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:59,940 INFO L87 Difference]: Start difference. First operand 400 states and 634 transitions. Second operand 5 states. [2020-10-12 20:51:00,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:00,900 INFO L93 Difference]: Finished difference Result 898 states and 1418 transitions. [2020-10-12 20:51:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:00,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-12 20:51:00,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:00,904 INFO L225 Difference]: With dead ends: 898 [2020-10-12 20:51:00,904 INFO L226 Difference]: Without dead ends: 514 [2020-10-12 20:51:00,905 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 [2020-10-12 20:51:00,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-12 20:51:00,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 400. [2020-10-12 20:51:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 20:51:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 632 transitions. [2020-10-12 20:51:00,922 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 632 transitions. Word has length 99 [2020-10-12 20:51:00,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:00,922 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 632 transitions. [2020-10-12 20:51:00,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:00,922 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 632 transitions. [2020-10-12 20:51:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:51:00,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:00,924 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:00,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:51:00,924 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:00,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:00,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1073491807, now seen corresponding path program 1 times [2020-10-12 20:51:00,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:00,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960778600] [2020-10-12 20:51:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:00,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:01,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:03,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:03,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:51:03,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2305 [2020-10-12 20:51:03,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-12 20:51:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:03,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:03,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:03,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:03,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:03,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:51:03,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:03,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:03,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:03,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:03,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 20:51:03,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960778600] [2020-10-12 20:51:03,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:03,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:03,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715884031] [2020-10-12 20:51:03,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:03,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:03,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:03,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:03,362 INFO L87 Difference]: Start difference. First operand 400 states and 632 transitions. Second operand 5 states. [2020-10-12 20:51:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:04,403 INFO L93 Difference]: Finished difference Result 964 states and 1523 transitions. [2020-10-12 20:51:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:04,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:51:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:04,407 INFO L225 Difference]: With dead ends: 964 [2020-10-12 20:51:04,407 INFO L226 Difference]: Without dead ends: 580 [2020-10-12 20:51:04,409 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 [2020-10-12 20:51:04,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-12 20:51:04,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 450. [2020-10-12 20:51:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-12 20:51:04,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 718 transitions. [2020-10-12 20:51:04,426 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 718 transitions. Word has length 102 [2020-10-12 20:51:04,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:04,427 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 718 transitions. [2020-10-12 20:51:04,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:04,427 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 718 transitions. [2020-10-12 20:51:04,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:51:04,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:04,429 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:04,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:51:04,429 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:04,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:04,429 INFO L82 PathProgramCache]: Analyzing trace with hash 939478301, now seen corresponding path program 1 times [2020-10-12 20:51:04,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:04,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147400478] [2020-10-12 20:51:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:04,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:05,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:06,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:06,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:51:06,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:06,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-10-12 20:51:06,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:06,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:06,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-12 20:51:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:06,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:06,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:06,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:06,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:06,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:06,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 20:51:06,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147400478] [2020-10-12 20:51:06,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:06,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:06,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399540305] [2020-10-12 20:51:06,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:06,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:06,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:06,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:06,396 INFO L87 Difference]: Start difference. First operand 450 states and 718 transitions. Second operand 5 states. [2020-10-12 20:51:07,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:07,803 INFO L93 Difference]: Finished difference Result 1062 states and 1693 transitions. [2020-10-12 20:51:07,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:07,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:51:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:07,807 INFO L225 Difference]: With dead ends: 1062 [2020-10-12 20:51:07,808 INFO L226 Difference]: Without dead ends: 628 [2020-10-12 20:51:07,809 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 [2020-10-12 20:51:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-12 20:51:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 448. [2020-10-12 20:51:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-12 20:51:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 716 transitions. [2020-10-12 20:51:07,825 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 716 transitions. Word has length 102 [2020-10-12 20:51:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:07,826 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 716 transitions. [2020-10-12 20:51:07,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 716 transitions. [2020-10-12 20:51:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:51:07,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:07,828 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:07,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:51:07,828 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:07,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1086178118, now seen corresponding path program 1 times [2020-10-12 20:51:07,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:07,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107410207] [2020-10-12 20:51:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:08,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:09,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:09,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:51:09,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2016 [2020-10-12 20:51:09,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:51:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:09,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:09,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:09,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:09,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:09,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:51:09,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107410207] [2020-10-12 20:51:09,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:09,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:09,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867328539] [2020-10-12 20:51:09,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:09,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:09,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:09,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:09,980 INFO L87 Difference]: Start difference. First operand 448 states and 716 transitions. Second operand 5 states. [2020-10-12 20:51:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:10,942 INFO L93 Difference]: Finished difference Result 994 states and 1582 transitions. [2020-10-12 20:51:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:10,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:51:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:10,947 INFO L225 Difference]: With dead ends: 994 [2020-10-12 20:51:10,947 INFO L226 Difference]: Without dead ends: 562 [2020-10-12 20:51:10,948 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 [2020-10-12 20:51:10,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-12 20:51:10,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 450. [2020-10-12 20:51:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-12 20:51:10,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 718 transitions. [2020-10-12 20:51:10,969 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 718 transitions. Word has length 103 [2020-10-12 20:51:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:10,970 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 718 transitions. [2020-10-12 20:51:10,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:10,970 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 718 transitions. [2020-10-12 20:51:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:51:10,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:10,971 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:10,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:51:10,972 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:10,972 INFO L82 PathProgramCache]: Analyzing trace with hash -48567623, now seen corresponding path program 1 times [2020-10-12 20:51:10,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:10,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831284136] [2020-10-12 20:51:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:11,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:11,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:12,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:12,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:51:12,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:12,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1340 [2020-10-12 20:51:12,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:12,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:12,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:12,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:51:12,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:12,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:12,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:12,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:12,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:12,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:12,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:12,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:51:12,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831284136] [2020-10-12 20:51:12,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:12,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:12,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251268374] [2020-10-12 20:51:12,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:12,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:12,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:12,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:12,447 INFO L87 Difference]: Start difference. First operand 450 states and 718 transitions. Second operand 5 states. [2020-10-12 20:51:13,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:13,300 INFO L93 Difference]: Finished difference Result 996 states and 1582 transitions. [2020-10-12 20:51:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:13,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:51:13,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:13,305 INFO L225 Difference]: With dead ends: 996 [2020-10-12 20:51:13,305 INFO L226 Difference]: Without dead ends: 562 [2020-10-12 20:51:13,307 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 [2020-10-12 20:51:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-12 20:51:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 454. [2020-10-12 20:51:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-10-12 20:51:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 724 transitions. [2020-10-12 20:51:13,325 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 724 transitions. Word has length 103 [2020-10-12 20:51:13,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:13,326 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 724 transitions. [2020-10-12 20:51:13,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:13,326 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 724 transitions. [2020-10-12 20:51:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:51:13,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:13,328 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:13,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:51:13,328 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:13,329 INFO L82 PathProgramCache]: Analyzing trace with hash 962601569, now seen corresponding path program 1 times [2020-10-12 20:51:13,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:13,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524590309] [2020-10-12 20:51:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:13,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:14,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:14,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:51:14,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1616 [2020-10-12 20:51:14,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 20:51:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:51:14,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:15,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:15,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:15,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 20:51:15,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524590309] [2020-10-12 20:51:15,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:15,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:15,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444302400] [2020-10-12 20:51:15,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:15,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:15,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:15,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:15,054 INFO L87 Difference]: Start difference. First operand 454 states and 724 transitions. Second operand 5 states. [2020-10-12 20:51:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:16,017 INFO L93 Difference]: Finished difference Result 1064 states and 1696 transitions. [2020-10-12 20:51:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:16,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:51:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:16,022 INFO L225 Difference]: With dead ends: 1064 [2020-10-12 20:51:16,023 INFO L226 Difference]: Without dead ends: 626 [2020-10-12 20:51:16,026 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 [2020-10-12 20:51:16,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-12 20:51:16,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 506. [2020-10-12 20:51:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-12 20:51:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 812 transitions. [2020-10-12 20:51:16,052 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 812 transitions. Word has length 104 [2020-10-12 20:51:16,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:16,053 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 812 transitions. [2020-10-12 20:51:16,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:16,053 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 812 transitions. [2020-10-12 20:51:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:51:16,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:16,055 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:16,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:51:16,055 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:16,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1103150179, now seen corresponding path program 1 times [2020-10-12 20:51:16,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:16,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493863352] [2020-10-12 20:51:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:16,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:17,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:17,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:51:17,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:17,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1827 [2020-10-12 20:51:17,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 20:51:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:51:17,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:17,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:17,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:17,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:17,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:17,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:17,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:17,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:17,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:17,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:17,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 20:51:18,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493863352] [2020-10-12 20:51:18,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:18,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:18,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921616120] [2020-10-12 20:51:18,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:18,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:18,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:18,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:18,009 INFO L87 Difference]: Start difference. First operand 506 states and 812 transitions. Second operand 5 states. [2020-10-12 20:51:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:18,977 INFO L93 Difference]: Finished difference Result 1118 states and 1786 transitions. [2020-10-12 20:51:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:18,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:51:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:18,982 INFO L225 Difference]: With dead ends: 1118 [2020-10-12 20:51:18,982 INFO L226 Difference]: Without dead ends: 628 [2020-10-12 20:51:18,984 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 [2020-10-12 20:51:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-12 20:51:18,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 456. [2020-10-12 20:51:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-12 20:51:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 726 transitions. [2020-10-12 20:51:19,001 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 726 transitions. Word has length 104 [2020-10-12 20:51:19,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:19,001 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 726 transitions. [2020-10-12 20:51:19,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 726 transitions. [2020-10-12 20:51:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:51:19,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:19,003 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:19,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:51:19,004 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:19,004 INFO L82 PathProgramCache]: Analyzing trace with hash 124815694, now seen corresponding path program 1 times [2020-10-12 20:51:19,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:19,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67701122] [2020-10-12 20:51:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:19,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:20,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:20,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:51:20,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1757 [2020-10-12 20:51:20,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:51:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:20,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:20,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:20,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:20,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:20,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:20,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:20,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:20,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:51:20,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67701122] [2020-10-12 20:51:20,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:20,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:20,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671766063] [2020-10-12 20:51:20,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:20,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:20,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:20,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:20,878 INFO L87 Difference]: Start difference. First operand 456 states and 726 transitions. Second operand 5 states. [2020-10-12 20:51:21,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:21,688 INFO L93 Difference]: Finished difference Result 1004 states and 1590 transitions. [2020-10-12 20:51:21,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:21,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:51:21,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:21,692 INFO L225 Difference]: With dead ends: 1004 [2020-10-12 20:51:21,692 INFO L226 Difference]: Without dead ends: 564 [2020-10-12 20:51:21,693 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 [2020-10-12 20:51:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-12 20:51:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 464. [2020-10-12 20:51:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-12 20:51:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 740 transitions. [2020-10-12 20:51:21,709 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 740 transitions. Word has length 108 [2020-10-12 20:51:21,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:21,710 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 740 transitions. [2020-10-12 20:51:21,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:21,710 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 740 transitions. [2020-10-12 20:51:21,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:51:21,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:21,712 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:21,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:51:21,712 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:21,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1831944335, now seen corresponding path program 1 times [2020-10-12 20:51:21,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:21,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564910557] [2020-10-12 20:51:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:21,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:22,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:23,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:23,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:51:23,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:23,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1917 [2020-10-12 20:51:23,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:23,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:23,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:51:23,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:23,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:23,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:23,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:23,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:23,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:23,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:23,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:23,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:51:23,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564910557] [2020-10-12 20:51:23,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:23,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:23,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420994091] [2020-10-12 20:51:23,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:23,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:23,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:23,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:23,755 INFO L87 Difference]: Start difference. First operand 464 states and 740 transitions. Second operand 5 states. [2020-10-12 20:51:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:24,625 INFO L93 Difference]: Finished difference Result 787 states and 1237 transitions. [2020-10-12 20:51:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:24,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:51:24,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:24,630 INFO L225 Difference]: With dead ends: 787 [2020-10-12 20:51:24,630 INFO L226 Difference]: Without dead ends: 564 [2020-10-12 20:51:24,632 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 [2020-10-12 20:51:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-12 20:51:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 468. [2020-10-12 20:51:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-12 20:51:24,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 746 transitions. [2020-10-12 20:51:24,650 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 746 transitions. Word has length 108 [2020-10-12 20:51:24,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:24,650 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 746 transitions. [2020-10-12 20:51:24,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:24,651 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 746 transitions. [2020-10-12 20:51:24,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:51:24,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:24,652 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:24,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:51:24,653 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:24,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:24,653 INFO L82 PathProgramCache]: Analyzing trace with hash -263617049, now seen corresponding path program 1 times [2020-10-12 20:51:24,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:24,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307703495] [2020-10-12 20:51:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:24,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:25,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:26,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:26,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:51:26,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:26,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1904 [2020-10-12 20:51:26,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:26,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:26,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 20:51:26,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:26,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:26,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:26,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:26,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:26,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 20:51:26,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307703495] [2020-10-12 20:51:26,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:26,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:26,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970182777] [2020-10-12 20:51:26,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:26,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:26,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:26,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:26,664 INFO L87 Difference]: Start difference. First operand 468 states and 746 transitions. Second operand 5 states. [2020-10-12 20:51:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:27,643 INFO L93 Difference]: Finished difference Result 1099 states and 1750 transitions. [2020-10-12 20:51:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:27,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:51:27,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:27,647 INFO L225 Difference]: With dead ends: 1099 [2020-10-12 20:51:27,647 INFO L226 Difference]: Without dead ends: 647 [2020-10-12 20:51:27,648 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 [2020-10-12 20:51:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-10-12 20:51:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 517. [2020-10-12 20:51:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-10-12 20:51:27,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 831 transitions. [2020-10-12 20:51:27,666 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 831 transitions. Word has length 109 [2020-10-12 20:51:27,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:27,667 INFO L479 AbstractCegarLoop]: Abstraction has 517 states and 831 transitions. [2020-10-12 20:51:27,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 831 transitions. [2020-10-12 20:51:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:51:27,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:27,669 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:27,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:51:27,669 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:27,670 INFO L82 PathProgramCache]: Analyzing trace with hash -397630555, now seen corresponding path program 1 times [2020-10-12 20:51:27,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:27,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077154142] [2020-10-12 20:51:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:27,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:27,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:29,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:29,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:51:29,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1912 [2020-10-12 20:51:29,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 20:51:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:29,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:29,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:29,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:29,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:29,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:29,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 20:51:29,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077154142] [2020-10-12 20:51:29,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:29,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:29,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387383538] [2020-10-12 20:51:29,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:29,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:29,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:29,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:29,726 INFO L87 Difference]: Start difference. First operand 517 states and 831 transitions. Second operand 5 states. [2020-10-12 20:51:30,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:30,741 INFO L93 Difference]: Finished difference Result 1198 states and 1921 transitions. [2020-10-12 20:51:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:30,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:51:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:30,745 INFO L225 Difference]: With dead ends: 1198 [2020-10-12 20:51:30,746 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 20:51:30,747 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 [2020-10-12 20:51:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 20:51:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 518. [2020-10-12 20:51:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-12 20:51:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 832 transitions. [2020-10-12 20:51:30,765 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 832 transitions. Word has length 109 [2020-10-12 20:51:30,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:30,765 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 832 transitions. [2020-10-12 20:51:30,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 832 transitions. [2020-10-12 20:51:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:51:30,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:30,767 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:30,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:51:30,767 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:30,768 INFO L82 PathProgramCache]: Analyzing trace with hash 413120306, now seen corresponding path program 1 times [2020-10-12 20:51:30,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:30,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161655095] [2020-10-12 20:51:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:30,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:30,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:32,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:32,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:51:32,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-10-12 20:51:32,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:51:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:32,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:32,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:32,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:32,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:32,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:32,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:32,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:32,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:32,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:32,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:51:32,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161655095] [2020-10-12 20:51:32,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:32,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:32,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210576535] [2020-10-12 20:51:32,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:32,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:32,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:32,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:32,697 INFO L87 Difference]: Start difference. First operand 518 states and 832 transitions. Second operand 5 states. [2020-10-12 20:51:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:33,491 INFO L93 Difference]: Finished difference Result 1110 states and 1770 transitions. [2020-10-12 20:51:33,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:33,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:51:33,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:33,494 INFO L225 Difference]: With dead ends: 1110 [2020-10-12 20:51:33,495 INFO L226 Difference]: Without dead ends: 608 [2020-10-12 20:51:33,496 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 [2020-10-12 20:51:33,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-12 20:51:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 518. [2020-10-12 20:51:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-12 20:51:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 830 transitions. [2020-10-12 20:51:33,517 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 830 transitions. Word has length 110 [2020-10-12 20:51:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:33,517 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 830 transitions. [2020-10-12 20:51:33,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 830 transitions. [2020-10-12 20:51:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:51:33,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:33,519 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:33,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:51:33,520 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1832264847, now seen corresponding path program 1 times [2020-10-12 20:51:33,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:33,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557637605] [2020-10-12 20:51:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:34,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:35,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:51:35,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:35,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1539 [2020-10-12 20:51:35,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:51:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:35,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:35,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:35,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:35,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:35,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:35,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:51:35,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557637605] [2020-10-12 20:51:35,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:35,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:35,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998978276] [2020-10-12 20:51:35,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:35,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:35,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:35,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:35,180 INFO L87 Difference]: Start difference. First operand 518 states and 830 transitions. Second operand 5 states. [2020-10-12 20:51:36,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:36,026 INFO L93 Difference]: Finished difference Result 856 states and 1354 transitions. [2020-10-12 20:51:36,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:36,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:51:36,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:36,033 INFO L225 Difference]: With dead ends: 856 [2020-10-12 20:51:36,033 INFO L226 Difference]: Without dead ends: 606 [2020-10-12 20:51:36,034 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 [2020-10-12 20:51:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-12 20:51:36,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 520. [2020-10-12 20:51:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-12 20:51:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 832 transitions. [2020-10-12 20:51:36,051 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 832 transitions. Word has length 110 [2020-10-12 20:51:36,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:36,051 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 832 transitions. [2020-10-12 20:51:36,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:36,051 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 832 transitions. [2020-10-12 20:51:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:51:36,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:36,053 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:36,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:51:36,054 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:36,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:36,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1895375975, now seen corresponding path program 1 times [2020-10-12 20:51:36,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:36,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700534696] [2020-10-12 20:51:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:36,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:41,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:41,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:51:41,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:51:41,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:51:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 20:51:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:41,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:41,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:41,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:41,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:41,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:41,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:41,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:41,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 20:51:41,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700534696] [2020-10-12 20:51:41,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:41,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:51:41,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913901904] [2020-10-12 20:51:41,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:51:41,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:41,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:51:41,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:51:41,594 INFO L87 Difference]: Start difference. First operand 520 states and 832 transitions. Second operand 11 states. [2020-10-12 20:51:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:44,888 INFO L93 Difference]: Finished difference Result 1112 states and 1771 transitions. [2020-10-12 20:51:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:51:44,888 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-10-12 20:51:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:44,892 INFO L225 Difference]: With dead ends: 1112 [2020-10-12 20:51:44,892 INFO L226 Difference]: Without dead ends: 861 [2020-10-12 20:51:44,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:51:44,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-10-12 20:51:44,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 762. [2020-10-12 20:51:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2020-10-12 20:51:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1223 transitions. [2020-10-12 20:51:44,917 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1223 transitions. Word has length 113 [2020-10-12 20:51:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:44,918 INFO L479 AbstractCegarLoop]: Abstraction has 762 states and 1223 transitions. [2020-10-12 20:51:44,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:51:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1223 transitions. [2020-10-12 20:51:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:51:44,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:44,920 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:44,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:51:44,920 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:44,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1377572686, now seen corresponding path program 1 times [2020-10-12 20:51:44,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:44,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310075350] [2020-10-12 20:51:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:44,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:49,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:51:49,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:49,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:51:49,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:51:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 20:51:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:50,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:50,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:50,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:50,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:50,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:50,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 20:51:50,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310075350] [2020-10-12 20:51:50,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:50,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:51:50,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996881110] [2020-10-12 20:51:50,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:51:50,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:50,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:51:50,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:51:50,426 INFO L87 Difference]: Start difference. First operand 762 states and 1223 transitions. Second operand 10 states. [2020-10-12 20:51:53,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:53,182 INFO L93 Difference]: Finished difference Result 1350 states and 2157 transitions. [2020-10-12 20:51:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:51:53,184 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 20:51:53,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:53,188 INFO L225 Difference]: With dead ends: 1350 [2020-10-12 20:51:53,188 INFO L226 Difference]: Without dead ends: 857 [2020-10-12 20:51:53,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:51:53,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-12 20:51:53,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 762. [2020-10-12 20:51:53,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2020-10-12 20:51:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1223 transitions. [2020-10-12 20:51:53,213 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1223 transitions. Word has length 114 [2020-10-12 20:51:53,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:53,214 INFO L479 AbstractCegarLoop]: Abstraction has 762 states and 1223 transitions. [2020-10-12 20:51:53,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:51:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1223 transitions. [2020-10-12 20:51:53,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:51:53,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:53,218 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:53,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:51:53,219 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:53,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:53,219 INFO L82 PathProgramCache]: Analyzing trace with hash 2094603131, now seen corresponding path program 1 times [2020-10-12 20:51:53,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:53,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113951010] [2020-10-12 20:51:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:53,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:53,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:53,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:58,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:58,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:51:58,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:51:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-12 20:51:58,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:51:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 20:51:58,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:58,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:58,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:58,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:58,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:51:58,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:58,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 70 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:51:58,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113951010] [2020-10-12 20:51:58,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:58,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:51:58,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579536527] [2020-10-12 20:51:58,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:51:58,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:58,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:51:58,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:51:58,888 INFO L87 Difference]: Start difference. First operand 762 states and 1223 transitions. Second operand 11 states. [2020-10-12 20:52:01,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:01,179 INFO L93 Difference]: Finished difference Result 1722 states and 2765 transitions. [2020-10-12 20:52:01,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:52:01,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2020-10-12 20:52:01,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:01,185 INFO L225 Difference]: With dead ends: 1722 [2020-10-12 20:52:01,185 INFO L226 Difference]: Without dead ends: 976 [2020-10-12 20:52:01,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-12 20:52:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-10-12 20:52:01,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 961. [2020-10-12 20:52:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-10-12 20:52:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1546 transitions. [2020-10-12 20:52:01,218 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1546 transitions. Word has length 114 [2020-10-12 20:52:01,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:01,218 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1546 transitions. [2020-10-12 20:52:01,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:52:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1546 transitions. [2020-10-12 20:52:01,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:52:01,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:01,220 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:01,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:52:01,221 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:01,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1150588133, now seen corresponding path program 1 times [2020-10-12 20:52:01,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:01,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155350311] [2020-10-12 20:52:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:06,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:52:06,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-12 20:52:06,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:52:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:52:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:06,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:06,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:06,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:06,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 20:52:06,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155350311] [2020-10-12 20:52:06,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:06,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 20:52:06,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250746345] [2020-10-12 20:52:06,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:52:06,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:06,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:52:06,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:52:06,967 INFO L87 Difference]: Start difference. First operand 961 states and 1546 transitions. Second operand 12 states. [2020-10-12 20:52:09,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:09,737 INFO L93 Difference]: Finished difference Result 2424 states and 3887 transitions. [2020-10-12 20:52:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:52:09,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-10-12 20:52:09,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:09,749 INFO L225 Difference]: With dead ends: 2424 [2020-10-12 20:52:09,749 INFO L226 Difference]: Without dead ends: 1479 [2020-10-12 20:52:09,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:52:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2020-10-12 20:52:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1203. [2020-10-12 20:52:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-10-12 20:52:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1938 transitions. [2020-10-12 20:52:09,796 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1938 transitions. Word has length 115 [2020-10-12 20:52:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:09,796 INFO L479 AbstractCegarLoop]: Abstraction has 1203 states and 1938 transitions. [2020-10-12 20:52:09,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:52:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1938 transitions. [2020-10-12 20:52:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:52:09,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:09,799 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:09,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:52:09,799 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:09,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:09,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1284601639, now seen corresponding path program 1 times [2020-10-12 20:52:09,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:09,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467764406] [2020-10-12 20:52:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:09,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:14,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:14,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:52:14,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4605 [2020-10-12 20:52:14,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:52:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:52:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:15,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:15,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:15,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 20:52:15,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467764406] [2020-10-12 20:52:15,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:15,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:52:15,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141532735] [2020-10-12 20:52:15,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:52:15,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:15,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:52:15,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:52:15,095 INFO L87 Difference]: Start difference. First operand 1203 states and 1938 transitions. Second operand 11 states. [2020-10-12 20:52:19,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:19,088 INFO L93 Difference]: Finished difference Result 2067 states and 3295 transitions. [2020-10-12 20:52:19,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:52:19,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 115 [2020-10-12 20:52:19,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:19,094 INFO L225 Difference]: With dead ends: 2067 [2020-10-12 20:52:19,095 INFO L226 Difference]: Without dead ends: 1572 [2020-10-12 20:52:19,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-12 20:52:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2020-10-12 20:52:19,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1202. [2020-10-12 20:52:19,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-10-12 20:52:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1937 transitions. [2020-10-12 20:52:19,148 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1937 transitions. Word has length 115 [2020-10-12 20:52:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:19,148 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1937 transitions. [2020-10-12 20:52:19,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:52:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1937 transitions. [2020-10-12 20:52:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:19,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:19,151 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:19,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:52:19,151 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:19,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:19,152 INFO L82 PathProgramCache]: Analyzing trace with hash -58438016, now seen corresponding path program 1 times [2020-10-12 20:52:19,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:19,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327087397] [2020-10-12 20:52:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:19,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:19,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:21,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:21,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2065 [2020-10-12 20:52:21,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:52:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:52:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:21,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:21,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:21,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:21,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:52:21,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327087397] [2020-10-12 20:52:21,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:21,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:21,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521007066] [2020-10-12 20:52:21,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:21,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:21,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:21,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:21,327 INFO L87 Difference]: Start difference. First operand 1202 states and 1937 transitions. Second operand 5 states. [2020-10-12 20:52:22,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:22,211 INFO L93 Difference]: Finished difference Result 2326 states and 3712 transitions. [2020-10-12 20:52:22,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:22,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:52:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:22,218 INFO L225 Difference]: With dead ends: 2326 [2020-10-12 20:52:22,218 INFO L226 Difference]: Without dead ends: 1356 [2020-10-12 20:52:22,220 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 [2020-10-12 20:52:22,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2020-10-12 20:52:22,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1222. [2020-10-12 20:52:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2020-10-12 20:52:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1973 transitions. [2020-10-12 20:52:22,258 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1973 transitions. Word has length 116 [2020-10-12 20:52:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:22,258 INFO L479 AbstractCegarLoop]: Abstraction has 1222 states and 1973 transitions. [2020-10-12 20:52:22,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1973 transitions. [2020-10-12 20:52:22,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:22,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:22,261 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:22,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:52:22,261 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:22,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:22,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1313179522, now seen corresponding path program 1 times [2020-10-12 20:52:22,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:22,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100939390] [2020-10-12 20:52:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:22,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:27,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:27,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:27,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 20:52:27,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:52:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:52:27,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:27,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:27,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:27,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:27,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:27,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:27,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:27,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:27,603 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 20:52:27,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100939390] [2020-10-12 20:52:27,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:27,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:52:27,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891144950] [2020-10-12 20:52:27,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:52:27,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:27,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:52:27,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:52:27,606 INFO L87 Difference]: Start difference. First operand 1222 states and 1973 transitions. Second operand 9 states. [2020-10-12 20:52:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:30,220 INFO L93 Difference]: Finished difference Result 2874 states and 4613 transitions. [2020-10-12 20:52:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:52:30,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-10-12 20:52:30,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:30,231 INFO L225 Difference]: With dead ends: 2874 [2020-10-12 20:52:30,231 INFO L226 Difference]: Without dead ends: 1668 [2020-10-12 20:52:30,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:52:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-10-12 20:52:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1274. [2020-10-12 20:52:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2020-10-12 20:52:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2063 transitions. [2020-10-12 20:52:30,271 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2063 transitions. Word has length 116 [2020-10-12 20:52:30,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:30,271 INFO L479 AbstractCegarLoop]: Abstraction has 1274 states and 2063 transitions. [2020-10-12 20:52:30,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:52:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2063 transitions. [2020-10-12 20:52:30,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:30,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:30,274 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:30,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:52:30,274 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:30,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:30,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1172630912, now seen corresponding path program 1 times [2020-10-12 20:52:30,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:30,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751364540] [2020-10-12 20:52:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:30,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:35,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:35,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:35,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:35,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:52:35,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:35,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:52:35,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:52:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:35,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:35,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:35,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:35,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:52:35,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:35,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 20:52:35,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751364540] [2020-10-12 20:52:35,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:35,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:52:35,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020113804] [2020-10-12 20:52:35,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:52:35,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:35,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:52:35,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:52:35,815 INFO L87 Difference]: Start difference. First operand 1274 states and 2063 transitions. Second operand 11 states. [2020-10-12 20:52:40,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:40,832 INFO L93 Difference]: Finished difference Result 2387 states and 3799 transitions. [2020-10-12 20:52:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:52:40,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-10-12 20:52:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:40,844 INFO L225 Difference]: With dead ends: 2387 [2020-10-12 20:52:40,844 INFO L226 Difference]: Without dead ends: 1857 [2020-10-12 20:52:40,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:52:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-10-12 20:52:40,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1278. [2020-10-12 20:52:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-10-12 20:52:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 2069 transitions. [2020-10-12 20:52:40,892 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 2069 transitions. Word has length 116 [2020-10-12 20:52:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:40,892 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 2069 transitions. [2020-10-12 20:52:40,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:52:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 2069 transitions. [2020-10-12 20:52:40,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:40,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:40,896 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:40,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:52:40,897 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:40,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1552179461, now seen corresponding path program 1 times [2020-10-12 20:52:40,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:40,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450928895] [2020-10-12 20:52:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:41,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:41,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:41,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:41,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:52:41,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-12 20:52:41,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:41,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:52:41,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:52:41,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:52:41,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:41,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:41,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:41,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:41,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:41,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:41,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:41,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 20:52:41,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450928895] [2020-10-12 20:52:41,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:41,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:52:41,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873655569] [2020-10-12 20:52:41,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:52:41,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:41,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:52:41,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:52:41,379 INFO L87 Difference]: Start difference. First operand 1278 states and 2069 transitions. Second operand 4 states. [2020-10-12 20:52:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:41,961 INFO L93 Difference]: Finished difference Result 3800 states and 6166 transitions. [2020-10-12 20:52:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:52:41,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-12 20:52:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:41,990 INFO L225 Difference]: With dead ends: 3800 [2020-10-12 20:52:41,991 INFO L226 Difference]: Without dead ends: 2538 [2020-10-12 20:52:41,999 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 [2020-10-12 20:52:42,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2020-10-12 20:52:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2538. [2020-10-12 20:52:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2538 states. [2020-10-12 20:52:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 4102 transitions. [2020-10-12 20:52:42,091 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 4102 transitions. Word has length 116 [2020-10-12 20:52:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:42,092 INFO L479 AbstractCegarLoop]: Abstraction has 2538 states and 4102 transitions. [2020-10-12 20:52:42,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:52:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 4102 transitions. [2020-10-12 20:52:42,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 20:52:42,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:42,095 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:42,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:52:42,096 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:42,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:42,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1055455695, now seen corresponding path program 1 times [2020-10-12 20:52:42,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:42,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718981533] [2020-10-12 20:52:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:42,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:42,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 20:52:42,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:42,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-12 20:52:42,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:42,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:52:42,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-12 20:52:42,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:52:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:42,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:42,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:42,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:42,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:42,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:42,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:42,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:52:42,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718981533] [2020-10-12 20:52:42,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:42,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:52:42,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367257525] [2020-10-12 20:52:42,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:52:42,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:42,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:52:42,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:52:42,456 INFO L87 Difference]: Start difference. First operand 2538 states and 4102 transitions. Second operand 4 states. [2020-10-12 20:52:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:42,991 INFO L93 Difference]: Finished difference Result 3800 states and 6151 transitions. [2020-10-12 20:52:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:52:42,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-10-12 20:52:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:42,998 INFO L225 Difference]: With dead ends: 3800 [2020-10-12 20:52:42,999 INFO L226 Difference]: Without dead ends: 3798 [2020-10-12 20:52:43,000 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 [2020-10-12 20:52:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2020-10-12 20:52:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3798. [2020-10-12 20:52:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3798 states. [2020-10-12 20:52:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3798 states to 3798 states and 6145 transitions. [2020-10-12 20:52:43,110 INFO L78 Accepts]: Start accepts. Automaton has 3798 states and 6145 transitions. Word has length 118 [2020-10-12 20:52:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:43,110 INFO L479 AbstractCegarLoop]: Abstraction has 3798 states and 6145 transitions. [2020-10-12 20:52:43,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:52:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3798 states and 6145 transitions. [2020-10-12 20:52:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 20:52:43,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:43,118 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:43,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:52:43,118 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:43,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:43,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1344112788, now seen corresponding path program 1 times [2020-10-12 20:52:43,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:43,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588840786] [2020-10-12 20:52:43,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:43,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:43,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:43,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:48,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:48,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 20:52:48,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:48,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-12 20:52:48,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:52:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 20:52:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:48,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:48,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:48,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:48,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:48,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 147 proven. 51 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-12 20:52:48,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588840786] [2020-10-12 20:52:48,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:48,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:52:48,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776783433] [2020-10-12 20:52:48,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:52:48,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:48,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:52:48,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:52:48,705 INFO L87 Difference]: Start difference. First operand 3798 states and 6145 transitions. Second operand 11 states. [2020-10-12 20:52:52,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:52,111 INFO L93 Difference]: Finished difference Result 5731 states and 9245 transitions. [2020-10-12 20:52:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:52:52,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 163 [2020-10-12 20:52:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:52,121 INFO L225 Difference]: With dead ends: 5731 [2020-10-12 20:52:52,121 INFO L226 Difference]: Without dead ends: 4082 [2020-10-12 20:52:52,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:52:52,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2020-10-12 20:52:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 3858. [2020-10-12 20:52:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3858 states. [2020-10-12 20:52:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 6247 transitions. [2020-10-12 20:52:52,264 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 6247 transitions. Word has length 163 [2020-10-12 20:52:52,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:52,265 INFO L479 AbstractCegarLoop]: Abstraction has 3858 states and 6247 transitions. [2020-10-12 20:52:52,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:52:52,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 6247 transitions. [2020-10-12 20:52:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 20:52:52,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:52,272 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:52,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:52:52,274 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:52,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:52,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1471349815, now seen corresponding path program 1 times [2020-10-12 20:52:52,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:52,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380044743] [2020-10-12 20:52:52,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:52,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:52,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:57,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:57,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:52:57,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:57,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:52:57,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:52:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 20:52:57,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:57,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:57,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:57,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:57,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:57,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:57,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:57,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:57,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 148 proven. 52 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-12 20:52:57,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380044743] [2020-10-12 20:52:57,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:57,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:52:57,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548075678] [2020-10-12 20:52:57,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:52:57,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:57,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:52:57,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:52:57,916 INFO L87 Difference]: Start difference. First operand 3858 states and 6247 transitions. Second operand 10 states. [2020-10-12 20:53:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:00,455 INFO L93 Difference]: Finished difference Result 5777 states and 9324 transitions. [2020-10-12 20:53:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:53:00,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-10-12 20:53:00,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:00,465 INFO L225 Difference]: With dead ends: 5777 [2020-10-12 20:53:00,466 INFO L226 Difference]: Without dead ends: 4068 [2020-10-12 20:53:00,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:53:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2020-10-12 20:53:00,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 3861. [2020-10-12 20:53:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3861 states. [2020-10-12 20:53:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3861 states to 3861 states and 6250 transitions. [2020-10-12 20:53:00,592 INFO L78 Accepts]: Start accepts. Automaton has 3861 states and 6250 transitions. Word has length 164 [2020-10-12 20:53:00,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:00,593 INFO L479 AbstractCegarLoop]: Abstraction has 3861 states and 6250 transitions. [2020-10-12 20:53:00,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:53:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3861 states and 6250 transitions. [2020-10-12 20:53:00,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 20:53:00,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:00,599 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:00,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:53:00,599 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:00,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:00,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1103636768, now seen corresponding path program 1 times [2020-10-12 20:53:00,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:00,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413969345] [2020-10-12 20:53:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:00,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:00,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:01,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:01,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:05,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:05,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 20:53:05,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-12 20:53:05,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:53:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 20:53:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:06,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:06,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:06,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:06,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:06,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 171 proven. 51 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 20:53:06,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413969345] [2020-10-12 20:53:06,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:06,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:53:06,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512127695] [2020-10-12 20:53:06,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:53:06,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:06,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:53:06,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:53:06,508 INFO L87 Difference]: Start difference. First operand 3861 states and 6250 transitions. Second operand 10 states. [2020-10-12 20:53:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:09,412 INFO L93 Difference]: Finished difference Result 8507 states and 13696 transitions. [2020-10-12 20:53:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:53:09,413 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 165 [2020-10-12 20:53:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:09,425 INFO L225 Difference]: With dead ends: 8507 [2020-10-12 20:53:09,425 INFO L226 Difference]: Without dead ends: 4662 [2020-10-12 20:53:09,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:53:09,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2020-10-12 20:53:09,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 4044. [2020-10-12 20:53:09,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4044 states. [2020-10-12 20:53:09,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 6559 transitions. [2020-10-12 20:53:09,557 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 6559 transitions. Word has length 165 [2020-10-12 20:53:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:09,557 INFO L479 AbstractCegarLoop]: Abstraction has 4044 states and 6559 transitions. [2020-10-12 20:53:09,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:53:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 6559 transitions. [2020-10-12 20:53:09,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 20:53:09,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:09,564 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:09,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:53:09,567 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:09,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1990859614, now seen corresponding path program 1 times [2020-10-12 20:53:09,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:09,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986576946] [2020-10-12 20:53:09,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:09,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:14,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:14,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 20:53:14,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:14,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-12 20:53:14,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:53:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 20:53:14,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:15,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:15,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:15,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:15,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:15,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:15,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 171 proven. 51 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 20:53:15,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986576946] [2020-10-12 20:53:15,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:15,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 20:53:15,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975248399] [2020-10-12 20:53:15,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:53:15,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:15,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:53:15,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:53:15,618 INFO L87 Difference]: Start difference. First operand 4044 states and 6559 transitions. Second operand 12 states. [2020-10-12 20:53:19,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:19,592 INFO L93 Difference]: Finished difference Result 6064 states and 9793 transitions. [2020-10-12 20:53:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:53:19,593 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 165 [2020-10-12 20:53:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:19,599 INFO L225 Difference]: With dead ends: 6064 [2020-10-12 20:53:19,599 INFO L226 Difference]: Without dead ends: 4418 [2020-10-12 20:53:19,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-12 20:53:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2020-10-12 20:53:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4101. [2020-10-12 20:53:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4101 states. [2020-10-12 20:53:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6658 transitions. [2020-10-12 20:53:19,756 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6658 transitions. Word has length 165 [2020-10-12 20:53:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:19,756 INFO L479 AbstractCegarLoop]: Abstraction has 4101 states and 6658 transitions. [2020-10-12 20:53:19,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:53:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6658 transitions. [2020-10-12 20:53:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:53:19,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:19,763 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:19,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:53:19,763 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:19,764 INFO L82 PathProgramCache]: Analyzing trace with hash 42174723, now seen corresponding path program 1 times [2020-10-12 20:53:19,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:19,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813783037] [2020-10-12 20:53:19,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:24,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:24,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 20:53:24,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-12 20:53:24,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:53:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 20:53:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:25,412 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-12 20:53:25,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:25,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:25,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:25,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:25,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 148 proven. 52 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-12 20:53:25,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813783037] [2020-10-12 20:53:25,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:25,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:53:25,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428182578] [2020-10-12 20:53:25,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:53:25,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:25,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:53:25,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:53:25,830 INFO L87 Difference]: Start difference. First operand 4101 states and 6658 transitions. Second operand 11 states. [2020-10-12 20:53:29,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:29,325 INFO L93 Difference]: Finished difference Result 9204 states and 14787 transitions. [2020-10-12 20:53:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:53:29,326 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 166 [2020-10-12 20:53:29,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:29,333 INFO L225 Difference]: With dead ends: 9204 [2020-10-12 20:53:29,333 INFO L226 Difference]: Without dead ends: 5119 [2020-10-12 20:53:29,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 9 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:53:29,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2020-10-12 20:53:29,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 4173. [2020-10-12 20:53:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4173 states. [2020-10-12 20:53:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4173 states to 4173 states and 6766 transitions. [2020-10-12 20:53:29,490 INFO L78 Accepts]: Start accepts. Automaton has 4173 states and 6766 transitions. Word has length 166 [2020-10-12 20:53:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:29,490 INFO L479 AbstractCegarLoop]: Abstraction has 4173 states and 6766 transitions. [2020-10-12 20:53:29,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:53:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4173 states and 6766 transitions. [2020-10-12 20:53:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:53:29,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:29,497 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:29,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:53:29,498 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:29,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1776279173, now seen corresponding path program 1 times [2020-10-12 20:53:29,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:29,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229333984] [2020-10-12 20:53:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:30,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:34,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:34,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 20:53:34,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-12 20:53:34,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:53:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:53:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 20:53:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:34,995 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-10-12 20:53:35,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:35,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:35,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:35,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:35,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:35,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:35,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 172 proven. 52 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 20:53:35,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229333984] [2020-10-12 20:53:35,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:53:35,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 20:53:35,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633641197] [2020-10-12 20:53:35,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:53:35,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:35,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:53:35,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:53:35,522 INFO L87 Difference]: Start difference. First operand 4173 states and 6766 transitions. Second operand 12 states. [2020-10-12 20:53:37,377 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-12 20:53:38,574 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-12 20:53:40,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:40,411 INFO L93 Difference]: Finished difference Result 6193 states and 9959 transitions. [2020-10-12 20:53:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:53:40,412 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2020-10-12 20:53:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:40,418 INFO L225 Difference]: With dead ends: 6193 [2020-10-12 20:53:40,418 INFO L226 Difference]: Without dead ends: 4484 [2020-10-12 20:53:40,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-12 20:53:40,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2020-10-12 20:53:40,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 4113. [2020-10-12 20:53:40,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4113 states. [2020-10-12 20:53:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 6664 transitions. [2020-10-12 20:53:40,568 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 6664 transitions. Word has length 166 [2020-10-12 20:53:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:40,569 INFO L479 AbstractCegarLoop]: Abstraction has 4113 states and 6664 transitions. [2020-10-12 20:53:40,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:53:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 6664 transitions. [2020-10-12 20:53:40,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 20:53:40,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:40,576 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:40,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:53:40,576 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:40,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:40,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1705391647, now seen corresponding path program 1 times [2020-10-12 20:53:40,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:40,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694857843] [2020-10-12 20:53:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:41,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 20:53:41,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:53:41,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-12 20:53:41,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:41,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-12 20:53:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:53:41,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:41,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:41,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:41,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:41,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:41,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-12 20:53:41,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694857843] [2020-10-12 20:53:41,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:41,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:41,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936457282] [2020-10-12 20:53:41,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:41,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:41,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:41,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:41,812 INFO L87 Difference]: Start difference. First operand 4113 states and 6664 transitions. Second operand 5 states. [2020-10-12 20:53:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:42,833 INFO L93 Difference]: Finished difference Result 8600 states and 13820 transitions. [2020-10-12 20:53:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:42,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-12 20:53:42,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:42,839 INFO L225 Difference]: With dead ends: 8600 [2020-10-12 20:53:42,839 INFO L226 Difference]: Without dead ends: 4503 [2020-10-12 20:53:42,844 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 [2020-10-12 20:53:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2020-10-12 20:53:42,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 4113. [2020-10-12 20:53:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4113 states. [2020-10-12 20:53:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 6649 transitions. [2020-10-12 20:53:42,948 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 6649 transitions. Word has length 170 [2020-10-12 20:53:42,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:42,949 INFO L479 AbstractCegarLoop]: Abstraction has 4113 states and 6649 transitions. [2020-10-12 20:53:42,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 6649 transitions. [2020-10-12 20:53:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:53:42,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:42,954 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:42,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:53:42,954 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:42,954 INFO L82 PathProgramCache]: Analyzing trace with hash 866683042, now seen corresponding path program 1 times [2020-10-12 20:53:42,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:42,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561432483] [2020-10-12 20:53:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:43,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 20:53:43,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:53:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-12 20:53:43,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:53:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-12 20:53:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:53:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:43,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:43,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:43,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:43,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:43,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:44,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-12 20:53:44,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561432483] [2020-10-12 20:53:44,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:44,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:44,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759056021] [2020-10-12 20:53:44,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:44,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:44,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:44,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:44,016 INFO L87 Difference]: Start difference. First operand 4113 states and 6649 transitions. Second operand 5 states. [2020-10-12 20:53:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:44,972 INFO L93 Difference]: Finished difference Result 8540 states and 13705 transitions. [2020-10-12 20:53:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:44,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-12 20:53:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:44,978 INFO L225 Difference]: With dead ends: 8540 [2020-10-12 20:53:44,979 INFO L226 Difference]: Without dead ends: 4443 [2020-10-12 20:53:44,984 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 [2020-10-12 20:53:44,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4443 states. [2020-10-12 20:53:45,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4443 to 4113. [2020-10-12 20:53:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4113 states. [2020-10-12 20:53:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 6634 transitions. [2020-10-12 20:53:45,076 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 6634 transitions. Word has length 171 [2020-10-12 20:53:45,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:45,077 INFO L479 AbstractCegarLoop]: Abstraction has 4113 states and 6634 transitions. [2020-10-12 20:53:45,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 6634 transitions. [2020-10-12 20:53:45,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-12 20:53:45,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:45,081 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:45,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:53:45,082 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:45,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:45,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1829930596, now seen corresponding path program 1 times [2020-10-12 20:53:45,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:45,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720420027] [2020-10-12 20:53:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:45,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:50,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:50,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 20:53:50,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-12 20:53:50,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-12 20:53:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:53:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:50,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:50,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:50,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:50,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:50,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:50,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-12 20:53:50,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720420027] [2020-10-12 20:53:50,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:50,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:50,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265706444] [2020-10-12 20:53:50,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:50,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:50,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:50,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:50,286 INFO L87 Difference]: Start difference. First operand 4113 states and 6634 transitions. Second operand 5 states. [2020-10-12 20:53:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:51,677 INFO L93 Difference]: Finished difference Result 9541 states and 15290 transitions. [2020-10-12 20:53:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:51,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-12 20:53:51,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:51,685 INFO L225 Difference]: With dead ends: 9541 [2020-10-12 20:53:51,685 INFO L226 Difference]: Without dead ends: 5444 [2020-10-12 20:53:51,690 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 [2020-10-12 20:53:51,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2020-10-12 20:53:51,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 4359. [2020-10-12 20:53:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4359 states. [2020-10-12 20:53:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 7030 transitions. [2020-10-12 20:53:51,795 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 7030 transitions. Word has length 179 [2020-10-12 20:53:51,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:51,795 INFO L479 AbstractCegarLoop]: Abstraction has 4359 states and 7030 transitions. [2020-10-12 20:53:51,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:51,795 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 7030 transitions. [2020-10-12 20:53:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-12 20:53:51,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:51,800 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:51,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:53:51,801 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:51,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:51,801 INFO L82 PathProgramCache]: Analyzing trace with hash 186224593, now seen corresponding path program 1 times [2020-10-12 20:53:51,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:51,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170368309] [2020-10-12 20:53:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:51,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:56,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:56,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 20:53:56,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:53:56,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-12 20:53:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:53:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:56,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:56,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:56,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:56,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-12 20:53:56,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170368309] [2020-10-12 20:53:56,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:56,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:56,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770502920] [2020-10-12 20:53:56,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:56,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:56,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:56,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:56,946 INFO L87 Difference]: Start difference. First operand 4359 states and 7030 transitions. Second operand 5 states. [2020-10-12 20:53:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:58,352 INFO L93 Difference]: Finished difference Result 9727 states and 15586 transitions. [2020-10-12 20:53:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:58,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-12 20:53:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:58,358 INFO L225 Difference]: With dead ends: 9727 [2020-10-12 20:53:58,358 INFO L226 Difference]: Without dead ends: 5384 [2020-10-12 20:53:58,363 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 [2020-10-12 20:53:58,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2020-10-12 20:53:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4374. [2020-10-12 20:53:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4374 states. [2020-10-12 20:53:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 7045 transitions. [2020-10-12 20:53:58,532 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 7045 transitions. Word has length 180 [2020-10-12 20:53:58,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:58,532 INFO L479 AbstractCegarLoop]: Abstraction has 4374 states and 7045 transitions. [2020-10-12 20:53:58,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:58,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 7045 transitions. [2020-10-12 20:53:58,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-12 20:53:58,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:58,537 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 20:53:58,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:53:58,538 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:58,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:58,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2030494361, now seen corresponding path program 1 times [2020-10-12 20:53:58,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:58,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532473716] [2020-10-12 20:53:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:58,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:03,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:03,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-12 20:54:03,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:54:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-12 20:54:03,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 20:54:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:54:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-12 20:54:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:04,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:04,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:04,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:04,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:04,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:54:04,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:04,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 136 proven. 73 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-12 20:54:04,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532473716] [2020-10-12 20:54:04,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:54:04,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:54:04,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370249652] [2020-10-12 20:54:04,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:54:04,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:04,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:54:04,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:54:04,102 INFO L87 Difference]: Start difference. First operand 4374 states and 7045 transitions. Second operand 10 states.