/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.03.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:50:33,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:50:33,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:50:33,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:50:33,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:50:33,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:50:33,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:50:33,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:50:33,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:50:33,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:50:33,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:50:33,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:50:33,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:50:33,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:50:33,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:50:33,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:50:33,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:50:33,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:50:33,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:50:33,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:50:33,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:50:33,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:50:33,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:50:33,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:50:33,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:50:33,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:50:33,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:50:33,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:50:33,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:50:33,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:50:33,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:50:33,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:50:33,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:50:33,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:50:33,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:50:33,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:50:33,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:50:33,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:50:33,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:50:33,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:50:33,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:50:33,692 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 20:50:33,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:50:33,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:50:33,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:50:33,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:50:33,737 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:50:33,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:50:33,737 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:50:33,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:50:33,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:50:33,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:50:33,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:50:33,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:50:33,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:50:33,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:50:33,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:50:33,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:50:33,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:50:33,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:50:33,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:50:33,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:50:33,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:50:33,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:50:33,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:50:33,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:50:33,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:50:33,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:50:33,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:50:33,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:50:33,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:50:33,742 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 20:50:34,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:50:34,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:50:34,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:50:34,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:50:34,048 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:50:34,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_clnt.blast.03.i.cil-1.c [2020-10-12 20:50:34,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/724d45ff8/734d9d37b10c470a90021101ccf2d057/FLAG9e3665f7a [2020-10-12 20:50:34,691 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:50:34,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_clnt.blast.03.i.cil-1.c [2020-10-12 20:50:34,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/724d45ff8/734d9d37b10c470a90021101ccf2d057/FLAG9e3665f7a [2020-10-12 20:50:34,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/724d45ff8/734d9d37b10c470a90021101ccf2d057 [2020-10-12 20:50:34,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:50:34,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:50:34,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:50:34,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:50:34,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:50:34,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:50:34" (1/1) ... [2020-10-12 20:50:34,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c8b7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:34, skipping insertion in model container [2020-10-12 20:50:34,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:50:34" (1/1) ... [2020-10-12 20:50:34,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:50:34,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:50:35,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:50:35,586 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:50:35,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:50:35,792 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:50:35,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:35 WrapperNode [2020-10-12 20:50:35,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:50:35,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:50:35,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:50:35,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:50:35,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:35" (1/1) ... [2020-10-12 20:50:35,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:35" (1/1) ... [2020-10-12 20:50:35,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:35" (1/1) ... [2020-10-12 20:50:35,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:35" (1/1) ... [2020-10-12 20:50:35,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:35" (1/1) ... [2020-10-12 20:50:35,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:35" (1/1) ... [2020-10-12 20:50:35,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:35" (1/1) ... [2020-10-12 20:50:35,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:50:35,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:50:35,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:50:35,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:50:35,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:35" (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 20:50:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:50:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:50:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2020-10-12 20:50:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2020-10-12 20:50:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:50:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-12 20:50:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:50:36,083 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:50:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:50:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:50:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:50:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:50:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:50:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:50:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:50:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:50:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2020-10-12 20:50:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:50:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-12 20:50:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2020-10-12 20:50:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:50:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:50:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:50:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:50:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:50:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:50:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:50:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:50:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:50:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:50:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:50:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:50:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:50:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:50:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:50:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:50:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:50:36,589 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:50:37,247 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-12 20:50:37,248 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-12 20:50:37,272 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:50:37,272 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:50:37,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:50:37 BoogieIcfgContainer [2020-10-12 20:50:37,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:50:37,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:50:37,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:50:37,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:50:37,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:50:34" (1/3) ... [2020-10-12 20:50:37,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284716a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:50:37, skipping insertion in model container [2020-10-12 20:50:37,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:35" (2/3) ... [2020-10-12 20:50:37,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284716a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:50:37, skipping insertion in model container [2020-10-12 20:50:37,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:50:37" (3/3) ... [2020-10-12 20:50:37,286 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.03.i.cil-1.c [2020-10-12 20:50:37,296 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:50:37,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:50:37,315 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:50:37,340 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:50:37,340 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:50:37,340 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:50:37,340 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:50:37,340 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:50:37,340 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:50:37,341 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:50:37,341 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:50:37,363 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-10-12 20:50:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 20:50:37,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:37,373 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 20:50:37,373 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:37,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1671955434, now seen corresponding path program 1 times [2020-10-12 20:50:37,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:37,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894489672] [2020-10-12 20:50:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:38,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:38,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 20:50:38,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:38,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1168 [2020-10-12 20:50:38,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:50:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 20:50:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:50:38,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:38,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:38,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:38,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:50:38,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:38,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:38,933 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 20:50:38,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894489672] [2020-10-12 20:50:38,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:38,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:38,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27204883] [2020-10-12 20:50:38,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:38,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:38,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:38,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:38,962 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 5 states. [2020-10-12 20:50:39,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:39,847 INFO L93 Difference]: Finished difference Result 267 states and 442 transitions. [2020-10-12 20:50:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:39,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-12 20:50:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:39,862 INFO L225 Difference]: With dead ends: 267 [2020-10-12 20:50:39,863 INFO L226 Difference]: Without dead ends: 122 [2020-10-12 20:50:39,869 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 20:50:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-12 20:50:39,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-12 20:50:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 20:50:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 178 transitions. [2020-10-12 20:50:39,941 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 178 transitions. Word has length 30 [2020-10-12 20:50:39,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:39,942 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 178 transitions. [2020-10-12 20:50:39,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 178 transitions. [2020-10-12 20:50:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 20:50:39,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:39,950 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 20:50:39,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:50:39,950 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:39,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:39,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1881881790, now seen corresponding path program 1 times [2020-10-12 20:50:39,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:39,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134244998] [2020-10-12 20:50:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:40,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:40,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:41,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:43,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:43,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 20:50:43,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:50:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3170 [2020-10-12 20:50:43,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 20:50:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:50:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:50:43,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:43,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:43,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:43,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:43,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:50:43,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:43,407 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 20:50:43,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134244998] [2020-10-12 20:50:43,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:50:43,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:50:43,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379078269] [2020-10-12 20:50:43,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:50:43,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:43,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:50:43,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:50:43,412 INFO L87 Difference]: Start difference. First operand 121 states and 178 transitions. Second operand 9 states. [2020-10-12 20:50:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:44,966 INFO L93 Difference]: Finished difference Result 354 states and 528 transitions. [2020-10-12 20:50:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:50:44,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-12 20:50:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:44,970 INFO L225 Difference]: With dead ends: 354 [2020-10-12 20:50:44,970 INFO L226 Difference]: Without dead ends: 249 [2020-10-12 20:50:44,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:50:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-12 20:50:44,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 228. [2020-10-12 20:50:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-12 20:50:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 346 transitions. [2020-10-12 20:50:44,993 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 346 transitions. Word has length 44 [2020-10-12 20:50:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:44,994 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 346 transitions. [2020-10-12 20:50:44,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:50:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 346 transitions. [2020-10-12 20:50:44,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 20:50:44,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:44,996 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 20:50:44,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:50:44,997 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:44,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1265144394, now seen corresponding path program 1 times [2020-10-12 20:50:44,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:44,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390743729] [2020-10-12 20:50:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:45,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:45,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:45,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:45,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:45,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 20:50:45,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:45,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-12 20:50:45,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:50:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 20:50:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:50:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:45,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:45,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:45,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:50:45,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:45,955 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 20:50:45,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390743729] [2020-10-12 20:50:45,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:45,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:45,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641345464] [2020-10-12 20:50:45,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:45,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:45,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:45,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:45,957 INFO L87 Difference]: Start difference. First operand 228 states and 346 transitions. Second operand 5 states. [2020-10-12 20:50:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:46,609 INFO L93 Difference]: Finished difference Result 512 states and 782 transitions. [2020-10-12 20:50:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:46,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-12 20:50:46,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:46,613 INFO L225 Difference]: With dead ends: 512 [2020-10-12 20:50:46,613 INFO L226 Difference]: Without dead ends: 300 [2020-10-12 20:50:46,614 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 20:50:46,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-12 20:50:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 264. [2020-10-12 20:50:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-12 20:50:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 406 transitions. [2020-10-12 20:50:46,639 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 406 transitions. Word has length 59 [2020-10-12 20:50:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:46,640 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 406 transitions. [2020-10-12 20:50:46,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 406 transitions. [2020-10-12 20:50:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:50:46,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:46,645 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 20:50:46,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:50:46,646 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1780999209, now seen corresponding path program 1 times [2020-10-12 20:50:46,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:46,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515465653] [2020-10-12 20:50:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:46,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:46,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:47,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:47,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:50:47,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:50:47,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-12 20:50:47,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:47,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:47,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:47,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:50:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:47,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:47,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:47,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:47,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:47,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:47,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:47,859 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 20:50:47,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515465653] [2020-10-12 20:50:47,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:47,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:47,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108549387] [2020-10-12 20:50:47,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:47,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:47,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:47,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:47,861 INFO L87 Difference]: Start difference. First operand 264 states and 406 transitions. Second operand 5 states. [2020-10-12 20:50:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:48,667 INFO L93 Difference]: Finished difference Result 692 states and 1071 transitions. [2020-10-12 20:50:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:48,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-12 20:50:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:48,672 INFO L225 Difference]: With dead ends: 692 [2020-10-12 20:50:48,672 INFO L226 Difference]: Without dead ends: 444 [2020-10-12 20:50:48,674 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 20:50:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-12 20:50:48,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 314. [2020-10-12 20:50:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-12 20:50:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 492 transitions. [2020-10-12 20:50:48,695 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 492 transitions. Word has length 77 [2020-10-12 20:50:48,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:48,696 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 492 transitions. [2020-10-12 20:50:48,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 492 transitions. [2020-10-12 20:50:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:50:48,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:48,698 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 20:50:48,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:50:48,699 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:48,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1646985703, now seen corresponding path program 1 times [2020-10-12 20:50:48,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:48,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553392782] [2020-10-12 20:50:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:48,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:50,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:50,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:50:50,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:50,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2035 [2020-10-12 20:50:50,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:50:50,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:50,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:50,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:50,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:50,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:50,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:50,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:50,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:50,902 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 20:50:50,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553392782] [2020-10-12 20:50:50,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:50,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:50,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461779955] [2020-10-12 20:50:50,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:50,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:50,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:50,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:50,908 INFO L87 Difference]: Start difference. First operand 314 states and 492 transitions. Second operand 5 states. [2020-10-12 20:50:51,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:51,730 INFO L93 Difference]: Finished difference Result 698 states and 1096 transitions. [2020-10-12 20:50:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:51,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-12 20:50:51,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:51,735 INFO L225 Difference]: With dead ends: 698 [2020-10-12 20:50:51,735 INFO L226 Difference]: Without dead ends: 400 [2020-10-12 20:50:51,736 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 20:50:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-12 20:50:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 354. [2020-10-12 20:50:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-12 20:50:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 560 transitions. [2020-10-12 20:50:51,757 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 560 transitions. Word has length 77 [2020-10-12 20:50:51,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:51,757 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 560 transitions. [2020-10-12 20:50:51,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 560 transitions. [2020-10-12 20:50:51,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:50:51,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:51,762 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 20:50:51,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:50:51,763 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:51,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:51,763 INFO L82 PathProgramCache]: Analyzing trace with hash -628285136, now seen corresponding path program 1 times [2020-10-12 20:50:51,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:51,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993366114] [2020-10-12 20:50:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:51,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:51,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:52,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:52,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:50:52,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:50:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-12 20:50:52,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:50:52,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:52,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:52,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:52,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:52,702 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 20:50:52,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993366114] [2020-10-12 20:50:52,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:52,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:52,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541702058] [2020-10-12 20:50:52,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:52,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:52,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:52,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:52,706 INFO L87 Difference]: Start difference. First operand 354 states and 560 transitions. Second operand 5 states. [2020-10-12 20:50:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:53,553 INFO L93 Difference]: Finished difference Result 814 states and 1282 transitions. [2020-10-12 20:50:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:53,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:50:53,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:53,558 INFO L225 Difference]: With dead ends: 814 [2020-10-12 20:50:53,559 INFO L226 Difference]: Without dead ends: 476 [2020-10-12 20:50:53,560 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 20:50:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-12 20:50:53,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 356. [2020-10-12 20:50:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-12 20:50:53,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 562 transitions. [2020-10-12 20:50:53,576 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 562 transitions. Word has length 78 [2020-10-12 20:50:53,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:53,578 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 562 transitions. [2020-10-12 20:50:53,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 562 transitions. [2020-10-12 20:50:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:50:53,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:53,586 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 20:50:53,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:50:53,587 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:53,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:53,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1337256454, now seen corresponding path program 1 times [2020-10-12 20:50:53,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:53,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843905067] [2020-10-12 20:50:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:53,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:54,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:58,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:58,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:50:58,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:50:58,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4457 [2020-10-12 20:50:58,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:50:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:58,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:58,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:58,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:50:58,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:58,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:58,180 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 20:50:58,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843905067] [2020-10-12 20:50:58,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:58,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:58,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127025766] [2020-10-12 20:50:58,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:58,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:58,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:58,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:58,184 INFO L87 Difference]: Start difference. First operand 356 states and 562 transitions. Second operand 5 states. [2020-10-12 20:50:59,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:59,089 INFO L93 Difference]: Finished difference Result 816 states and 1282 transitions. [2020-10-12 20:50:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:59,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:50:59,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:59,097 INFO L225 Difference]: With dead ends: 816 [2020-10-12 20:50:59,098 INFO L226 Difference]: Without dead ends: 476 [2020-10-12 20:50:59,099 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 20:50:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-12 20:50:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 356. [2020-10-12 20:50:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-12 20:50:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 560 transitions. [2020-10-12 20:50:59,113 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 560 transitions. Word has length 95 [2020-10-12 20:50:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:59,114 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 560 transitions. [2020-10-12 20:50:59,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 560 transitions. [2020-10-12 20:50:59,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:50:59,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:59,116 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 20:50:59,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:50:59,116 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:59,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1089109960, now seen corresponding path program 1 times [2020-10-12 20:50:59,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:59,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701183897] [2020-10-12 20:50:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:59,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:00,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:00,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:51:00,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1317 [2020-10-12 20:51:00,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:51:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 20:51:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:51:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:00,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:00,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:00,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:00,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:00,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:00,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:00,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:51:00,557 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 20:51:00,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701183897] [2020-10-12 20:51:00,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:00,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:00,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494529158] [2020-10-12 20:51:00,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:00,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:00,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:00,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:00,560 INFO L87 Difference]: Start difference. First operand 356 states and 560 transitions. Second operand 5 states. [2020-10-12 20:51:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:01,239 INFO L93 Difference]: Finished difference Result 792 states and 1248 transitions. [2020-10-12 20:51:01,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:01,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:51:01,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:01,245 INFO L225 Difference]: With dead ends: 792 [2020-10-12 20:51:01,245 INFO L226 Difference]: Without dead ends: 452 [2020-10-12 20:51:01,246 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 20:51:01,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-12 20:51:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 400. [2020-10-12 20:51:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 20:51:01,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 636 transitions. [2020-10-12 20:51:01,260 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 636 transitions. Word has length 95 [2020-10-12 20:51:01,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:01,260 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 636 transitions. [2020-10-12 20:51:01,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:01,261 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 636 transitions. [2020-10-12 20:51:01,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 20:51:01,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:01,262 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 20:51:01,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:51:01,263 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:01,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:01,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1141382732, now seen corresponding path program 1 times [2020-10-12 20:51:01,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:01,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-10-12 20:51:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:01,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:02,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:02,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 20:51:02,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:51:02,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-12 20:51:02,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:02,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:02,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:02,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:51:02,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:02,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:02,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:02,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:51:02,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:02,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:02,515 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 20:51:02,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-10-12 20:51:02,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:02,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:02,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264777195] [2020-10-12 20:51:02,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:02,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:02,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:02,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:02,520 INFO L87 Difference]: Start difference. First operand 400 states and 636 transitions. Second operand 5 states. [2020-10-12 20:51:03,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:03,575 INFO L93 Difference]: Finished difference Result 904 states and 1430 transitions. [2020-10-12 20:51:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:03,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-12 20:51:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:03,585 INFO L225 Difference]: With dead ends: 904 [2020-10-12 20:51:03,585 INFO L226 Difference]: Without dead ends: 520 [2020-10-12 20:51:03,587 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 20:51:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-10-12 20:51:03,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 400. [2020-10-12 20:51:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 20:51:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 634 transitions. [2020-10-12 20:51:03,605 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 634 transitions. Word has length 98 [2020-10-12 20:51:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:03,605 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 634 transitions. [2020-10-12 20:51:03,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 634 transitions. [2020-10-12 20:51:03,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 20:51:03,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:03,607 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 20:51:03,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:51:03,608 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:03,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:03,608 INFO L82 PathProgramCache]: Analyzing trace with hash -643645843, now seen corresponding path program 1 times [2020-10-12 20:51:03,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:03,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223211800] [2020-10-12 20:51:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:03,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:03,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:04,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:04,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:51:04,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:51:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1061 [2020-10-12 20:51:04,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:51:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:04,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:04,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:04,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:04,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:04,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:51:04,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:04,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:04,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:04,793 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 20:51:04,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223211800] [2020-10-12 20:51:04,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:04,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:04,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103655090] [2020-10-12 20:51:04,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:04,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:04,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:04,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:04,795 INFO L87 Difference]: Start difference. First operand 400 states and 634 transitions. Second operand 5 states. [2020-10-12 20:51:05,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:05,900 INFO L93 Difference]: Finished difference Result 898 states and 1418 transitions. [2020-10-12 20:51:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:05,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-12 20:51:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:05,908 INFO L225 Difference]: With dead ends: 898 [2020-10-12 20:51:05,908 INFO L226 Difference]: Without dead ends: 514 [2020-10-12 20:51:05,911 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 20:51:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-12 20:51:05,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 400. [2020-10-12 20:51:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 20:51:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 632 transitions. [2020-10-12 20:51:05,938 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 632 transitions. Word has length 99 [2020-10-12 20:51:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:05,939 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 632 transitions. [2020-10-12 20:51:05,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:05,939 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 632 transitions. [2020-10-12 20:51:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:51:05,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:05,942 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 20:51:05,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:51:05,943 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:05,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1420524705, now seen corresponding path program 1 times [2020-10-12 20:51:05,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:05,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057703283] [2020-10-12 20:51:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:06,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:06,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:08,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:08,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:51:08,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2960 [2020-10-12 20:51:08,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-12 20:51:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:09,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:09,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:09,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:09,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:09,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:09,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:09,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:09,042 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 20:51:09,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057703283] [2020-10-12 20:51:09,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:09,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:09,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147690621] [2020-10-12 20:51:09,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:09,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:09,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:09,049 INFO L87 Difference]: Start difference. First operand 400 states and 632 transitions. Second operand 5 states. [2020-10-12 20:51:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:10,053 INFO L93 Difference]: Finished difference Result 964 states and 1523 transitions. [2020-10-12 20:51:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:10,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:51:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:10,059 INFO L225 Difference]: With dead ends: 964 [2020-10-12 20:51:10,059 INFO L226 Difference]: Without dead ends: 580 [2020-10-12 20:51:10,062 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 20:51:10,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-12 20:51:10,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 450. [2020-10-12 20:51:10,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-12 20:51:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 718 transitions. [2020-10-12 20:51:10,084 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 718 transitions. Word has length 102 [2020-10-12 20:51:10,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:10,085 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 718 transitions. [2020-10-12 20:51:10,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 718 transitions. [2020-10-12 20:51:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:51:10,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:10,088 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 20:51:10,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:51:10,088 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:10,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:10,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1554538211, now seen corresponding path program 1 times [2020-10-12 20:51:10,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:10,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519710149] [2020-10-12 20:51:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:12,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:12,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:51:12,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2702 [2020-10-12 20:51:12,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-12 20:51:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:12,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:12,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:12,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:12,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:12,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:12,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:12,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:12,926 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 20:51:12,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519710149] [2020-10-12 20:51:12,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:12,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:12,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354234817] [2020-10-12 20:51:12,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:12,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:12,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:12,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:12,929 INFO L87 Difference]: Start difference. First operand 450 states and 718 transitions. Second operand 5 states. [2020-10-12 20:51:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:13,918 INFO L93 Difference]: Finished difference Result 1062 states and 1693 transitions. [2020-10-12 20:51:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:13,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:51:13,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:13,925 INFO L225 Difference]: With dead ends: 1062 [2020-10-12 20:51:13,925 INFO L226 Difference]: Without dead ends: 628 [2020-10-12 20:51:13,926 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 20:51:13,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-12 20:51:13,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 448. [2020-10-12 20:51:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-12 20:51:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 716 transitions. [2020-10-12 20:51:13,947 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 716 transitions. Word has length 102 [2020-10-12 20:51:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:13,947 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 716 transitions. [2020-10-12 20:51:13,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 716 transitions. [2020-10-12 20:51:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:51:13,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:13,949 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 20:51:13,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:51:13,950 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:13,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:13,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1091278662, now seen corresponding path program 1 times [2020-10-12 20:51:13,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:13,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117877240] [2020-10-12 20:51:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:14,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:15,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:15,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:51:15,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1815 [2020-10-12 20:51:15,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:51:15,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:15,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:15,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:15,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:15,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:15,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:15,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:15,875 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 20:51:15,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117877240] [2020-10-12 20:51:15,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:15,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:15,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684378305] [2020-10-12 20:51:15,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:15,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:15,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:15,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:15,877 INFO L87 Difference]: Start difference. First operand 448 states and 716 transitions. Second operand 5 states. [2020-10-12 20:51:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:16,679 INFO L93 Difference]: Finished difference Result 994 states and 1582 transitions. [2020-10-12 20:51:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:16,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:51:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:16,683 INFO L225 Difference]: With dead ends: 994 [2020-10-12 20:51:16,683 INFO L226 Difference]: Without dead ends: 562 [2020-10-12 20:51:16,684 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 20:51:16,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-12 20:51:16,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 450. [2020-10-12 20:51:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-12 20:51:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 718 transitions. [2020-10-12 20:51:16,702 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 718 transitions. Word has length 103 [2020-10-12 20:51:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:16,702 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 718 transitions. [2020-10-12 20:51:16,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 718 transitions. [2020-10-12 20:51:16,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:51:16,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:16,704 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 20:51:16,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:51:16,705 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:16,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:16,705 INFO L82 PathProgramCache]: Analyzing trace with hash -53668167, now seen corresponding path program 1 times [2020-10-12 20:51:16,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:16,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048771352] [2020-10-12 20:51:16,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:16,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:17,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:18,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:18,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:51:18,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1457 [2020-10-12 20:51:18,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:51:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:18,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:18,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:18,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:18,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:18,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:18,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:18,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:18,292 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 20:51:18,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048771352] [2020-10-12 20:51:18,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:18,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:18,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935802643] [2020-10-12 20:51:18,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:18,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:18,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:18,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:18,294 INFO L87 Difference]: Start difference. First operand 450 states and 718 transitions. Second operand 5 states. [2020-10-12 20:51:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:19,121 INFO L93 Difference]: Finished difference Result 996 states and 1582 transitions. [2020-10-12 20:51:19,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:19,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:51:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:19,125 INFO L225 Difference]: With dead ends: 996 [2020-10-12 20:51:19,125 INFO L226 Difference]: Without dead ends: 562 [2020-10-12 20:51:19,128 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 20:51:19,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-12 20:51:19,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 454. [2020-10-12 20:51:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-10-12 20:51:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 724 transitions. [2020-10-12 20:51:19,149 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 724 transitions. Word has length 103 [2020-10-12 20:51:19,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:19,149 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 724 transitions. [2020-10-12 20:51:19,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 724 transitions. [2020-10-12 20:51:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:51:19,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:19,152 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 20:51:19,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:51:19,152 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:19,153 INFO L82 PathProgramCache]: Analyzing trace with hash 804484705, now seen corresponding path program 1 times [2020-10-12 20:51:19,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:19,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804965513] [2020-10-12 20:51:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:19,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:19,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:20,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:51:20,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1776 [2020-10-12 20:51:20,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 20:51:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:51:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:21,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:21,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:21,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:21,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:21,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:21,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:51:21,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:21,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:21,056 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 20:51:21,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804965513] [2020-10-12 20:51:21,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:21,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:21,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626393075] [2020-10-12 20:51:21,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:21,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:21,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:21,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:21,057 INFO L87 Difference]: Start difference. First operand 454 states and 724 transitions. Second operand 5 states. [2020-10-12 20:51:21,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:21,918 INFO L93 Difference]: Finished difference Result 1064 states and 1696 transitions. [2020-10-12 20:51:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:21,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:51:21,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:21,923 INFO L225 Difference]: With dead ends: 1064 [2020-10-12 20:51:21,923 INFO L226 Difference]: Without dead ends: 626 [2020-10-12 20:51:21,927 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 20:51:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-12 20:51:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 506. [2020-10-12 20:51:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-12 20:51:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 812 transitions. [2020-10-12 20:51:21,949 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 812 transitions. Word has length 104 [2020-10-12 20:51:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:21,949 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 812 transitions. [2020-10-12 20:51:21,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 812 transitions. [2020-10-12 20:51:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:51:21,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:21,951 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 20:51:21,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:51:21,952 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:21,952 INFO L82 PathProgramCache]: Analyzing trace with hash 945033315, now seen corresponding path program 1 times [2020-10-12 20:51:21,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:21,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436729513] [2020-10-12 20:51:21,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:22,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:23,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:23,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:51:23,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:23,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-12 20:51:23,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 20:51:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:51:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:23,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:23,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:23,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:23,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:23,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:23,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:23,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:23,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:23,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:23,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:23,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:23,762 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 20:51:23,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436729513] [2020-10-12 20:51:23,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:23,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:23,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703585323] [2020-10-12 20:51:23,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:23,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:23,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:23,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:23,764 INFO L87 Difference]: Start difference. First operand 506 states and 812 transitions. Second operand 5 states. [2020-10-12 20:51:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:24,712 INFO L93 Difference]: Finished difference Result 1118 states and 1786 transitions. [2020-10-12 20:51:24,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:24,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:51:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:24,716 INFO L225 Difference]: With dead ends: 1118 [2020-10-12 20:51:24,716 INFO L226 Difference]: Without dead ends: 628 [2020-10-12 20:51:24,717 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 20:51:24,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-12 20:51:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 456. [2020-10-12 20:51:24,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-12 20:51:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 726 transitions. [2020-10-12 20:51:24,731 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 726 transitions. Word has length 104 [2020-10-12 20:51:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:24,731 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 726 transitions. [2020-10-12 20:51:24,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 726 transitions. [2020-10-12 20:51:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:51:24,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:24,733 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 20:51:24,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:51:24,734 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:24,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:24,734 INFO L82 PathProgramCache]: Analyzing trace with hash 473554254, now seen corresponding path program 1 times [2020-10-12 20:51:24,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:24,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539090319] [2020-10-12 20:51:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:24,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:24,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:25,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:26,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:26,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:51:26,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1674 [2020-10-12 20:51:26,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:51:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:26,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:26,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:26,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:51:26,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:26,505 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 20:51:26,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539090319] [2020-10-12 20:51:26,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:26,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:26,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554412788] [2020-10-12 20:51:26,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:26,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:26,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:26,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:26,507 INFO L87 Difference]: Start difference. First operand 456 states and 726 transitions. Second operand 5 states. [2020-10-12 20:51:27,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:27,259 INFO L93 Difference]: Finished difference Result 1004 states and 1590 transitions. [2020-10-12 20:51:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:27,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:51:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:27,264 INFO L225 Difference]: With dead ends: 1004 [2020-10-12 20:51:27,264 INFO L226 Difference]: Without dead ends: 564 [2020-10-12 20:51:27,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:27,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-12 20:51:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 464. [2020-10-12 20:51:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-12 20:51:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 740 transitions. [2020-10-12 20:51:27,290 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 740 transitions. Word has length 108 [2020-10-12 20:51:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:27,290 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 740 transitions. [2020-10-12 20:51:27,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 740 transitions. [2020-10-12 20:51:27,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:51:27,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:27,292 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 20:51:27,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:51:27,293 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:27,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2114284401, now seen corresponding path program 1 times [2020-10-12 20:51:27,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:27,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872596265] [2020-10-12 20:51:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:27,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:27,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:28,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:28,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:51:28,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-12 20:51:28,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:51:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:28,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:28,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:28,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:28,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:28,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:29,016 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 20:51:29,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872596265] [2020-10-12 20:51:29,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:29,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:29,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178588184] [2020-10-12 20:51:29,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:29,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:29,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:29,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:29,021 INFO L87 Difference]: Start difference. First operand 464 states and 740 transitions. Second operand 5 states. [2020-10-12 20:51:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:29,877 INFO L93 Difference]: Finished difference Result 787 states and 1237 transitions. [2020-10-12 20:51:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:29,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:51:29,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:29,883 INFO L225 Difference]: With dead ends: 787 [2020-10-12 20:51:29,883 INFO L226 Difference]: Without dead ends: 564 [2020-10-12 20:51:29,884 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 20:51:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-12 20:51:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 468. [2020-10-12 20:51:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-12 20:51:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 746 transitions. [2020-10-12 20:51:29,901 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 746 transitions. Word has length 108 [2020-10-12 20:51:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:29,902 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 746 transitions. [2020-10-12 20:51:29,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 746 transitions. [2020-10-12 20:51:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:51:29,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:29,904 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 20:51:29,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:51:29,904 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:29,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:29,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1957343719, now seen corresponding path program 1 times [2020-10-12 20:51:29,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:29,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346482180] [2020-10-12 20:51:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:29,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:29,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:30,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:31,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:31,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:51:31,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:31,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1772 [2020-10-12 20:51:31,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:31,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:31,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 20:51:31,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:31,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:31,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:31,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:31,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:31,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:31,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:31,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:31,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:31,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:31,777 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 20:51:31,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346482180] [2020-10-12 20:51:31,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:31,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:31,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685343560] [2020-10-12 20:51:31,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:31,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:31,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:31,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:31,779 INFO L87 Difference]: Start difference. First operand 468 states and 746 transitions. Second operand 5 states. [2020-10-12 20:51:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:32,657 INFO L93 Difference]: Finished difference Result 1099 states and 1750 transitions. [2020-10-12 20:51:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:32,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:51:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:32,662 INFO L225 Difference]: With dead ends: 1099 [2020-10-12 20:51:32,662 INFO L226 Difference]: Without dead ends: 647 [2020-10-12 20:51:32,663 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 20:51:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-10-12 20:51:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 517. [2020-10-12 20:51:32,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-10-12 20:51:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 831 transitions. [2020-10-12 20:51:32,679 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 831 transitions. Word has length 109 [2020-10-12 20:51:32,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:32,680 INFO L479 AbstractCegarLoop]: Abstraction has 517 states and 831 transitions. [2020-10-12 20:51:32,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:32,680 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 831 transitions. [2020-10-12 20:51:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:51:32,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:32,682 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 20:51:32,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:51:32,682 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:32,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1823330213, now seen corresponding path program 1 times [2020-10-12 20:51:32,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:32,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513852589] [2020-10-12 20:51:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:32,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:33,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:34,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:34,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:51:34,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1821 [2020-10-12 20:51:34,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 20:51:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:34,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:34,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:34,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:34,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:34,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:34,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:34,626 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 20:51:34,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513852589] [2020-10-12 20:51:34,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:34,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:34,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464014743] [2020-10-12 20:51:34,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:34,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:34,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:34,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:34,628 INFO L87 Difference]: Start difference. First operand 517 states and 831 transitions. Second operand 5 states. [2020-10-12 20:51:35,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:35,605 INFO L93 Difference]: Finished difference Result 1198 states and 1921 transitions. [2020-10-12 20:51:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:35,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:51:35,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:35,614 INFO L225 Difference]: With dead ends: 1198 [2020-10-12 20:51:35,614 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 20:51:35,616 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 20:51:35,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 20:51:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 518. [2020-10-12 20:51:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-12 20:51:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 832 transitions. [2020-10-12 20:51:35,637 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 832 transitions. Word has length 109 [2020-10-12 20:51:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:35,638 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 832 transitions. [2020-10-12 20:51:35,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 832 transitions. [2020-10-12 20:51:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:51:35,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:35,640 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 20:51:35,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:51:35,640 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:35,641 INFO L82 PathProgramCache]: Analyzing trace with hash 543427378, now seen corresponding path program 1 times [2020-10-12 20:51:35,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:35,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622887708] [2020-10-12 20:51:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:35,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:36,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:37,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:37,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:51:37,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:37,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1629 [2020-10-12 20:51:37,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:51:37,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:37,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:37,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:37,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:37,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:37,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:37,382 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 20:51:37,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622887708] [2020-10-12 20:51:37,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:37,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:37,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434743686] [2020-10-12 20:51:37,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:37,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:37,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:37,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:37,384 INFO L87 Difference]: Start difference. First operand 518 states and 832 transitions. Second operand 5 states. [2020-10-12 20:51:38,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:38,158 INFO L93 Difference]: Finished difference Result 1110 states and 1770 transitions. [2020-10-12 20:51:38,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:38,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:51:38,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:38,163 INFO L225 Difference]: With dead ends: 1110 [2020-10-12 20:51:38,163 INFO L226 Difference]: Without dead ends: 608 [2020-10-12 20:51:38,164 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 20:51:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-12 20:51:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 518. [2020-10-12 20:51:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-12 20:51:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 830 transitions. [2020-10-12 20:51:38,181 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 830 transitions. Word has length 110 [2020-10-12 20:51:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:38,182 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 830 transitions. [2020-10-12 20:51:38,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 830 transitions. [2020-10-12 20:51:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:51:38,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:38,185 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 20:51:38,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:51:38,185 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:38,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:38,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1701957775, now seen corresponding path program 1 times [2020-10-12 20:51:38,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:38,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409357905] [2020-10-12 20:51:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:38,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:38,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:39,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:39,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:51:39,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:39,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-12 20:51:39,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:39,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:39,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:39,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:51:39,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:39,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:39,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:39,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:39,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:39,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:51:39,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:39,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:39,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:39,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:39,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:39,815 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 20:51:39,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409357905] [2020-10-12 20:51:39,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:39,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:39,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918396734] [2020-10-12 20:51:39,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:39,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:39,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:39,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:39,817 INFO L87 Difference]: Start difference. First operand 518 states and 830 transitions. Second operand 5 states. [2020-10-12 20:51:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:40,577 INFO L93 Difference]: Finished difference Result 856 states and 1354 transitions. [2020-10-12 20:51:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:40,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:51:40,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:40,586 INFO L225 Difference]: With dead ends: 856 [2020-10-12 20:51:40,587 INFO L226 Difference]: Without dead ends: 606 [2020-10-12 20:51:40,588 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 20:51:40,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-12 20:51:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 520. [2020-10-12 20:51:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-12 20:51:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 832 transitions. [2020-10-12 20:51:40,604 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 832 transitions. Word has length 110 [2020-10-12 20:51:40,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:40,605 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 832 transitions. [2020-10-12 20:51:40,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 832 transitions. [2020-10-12 20:51:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:51:40,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:40,607 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 20:51:40,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:51:40,607 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:40,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1222922343, now seen corresponding path program 1 times [2020-10-12 20:51:40,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:40,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328306251] [2020-10-12 20:51:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:40,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:41,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:45,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:45,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:51:45,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:45,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:51:45,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:45,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:51:45,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:45,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 20:51:45,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:46,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:46,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:46,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:46,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:46,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:46,131 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 20:51:46,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328306251] [2020-10-12 20:51:46,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:46,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:51:46,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132123218] [2020-10-12 20:51:46,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:51:46,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:51:46,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:51:46,133 INFO L87 Difference]: Start difference. First operand 520 states and 832 transitions. Second operand 11 states. [2020-10-12 20:51:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:49,105 INFO L93 Difference]: Finished difference Result 1112 states and 1771 transitions. [2020-10-12 20:51:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:51:49,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-10-12 20:51:49,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:49,109 INFO L225 Difference]: With dead ends: 1112 [2020-10-12 20:51:49,109 INFO L226 Difference]: Without dead ends: 861 [2020-10-12 20:51:49,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:51:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-10-12 20:51:49,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 762. [2020-10-12 20:51:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2020-10-12 20:51:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1223 transitions. [2020-10-12 20:51:49,132 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1223 transitions. Word has length 113 [2020-10-12 20:51:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:49,132 INFO L479 AbstractCegarLoop]: Abstraction has 762 states and 1223 transitions. [2020-10-12 20:51:49,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:51:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1223 transitions. [2020-10-12 20:51:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:51:49,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:49,134 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 20:51:49,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:51:49,135 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:49,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:49,135 INFO L82 PathProgramCache]: Analyzing trace with hash -748798798, now seen corresponding path program 1 times [2020-10-12 20:51:49,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:49,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559341792] [2020-10-12 20:51:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:54,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:54,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:51:54,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:54,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 20:51:54,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:51:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 20:51:54,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:54,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:54,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:54,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:54,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:54,609 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 20:51:54,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559341792] [2020-10-12 20:51:54,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:54,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:51:54,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989646121] [2020-10-12 20:51:54,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:51:54,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:54,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:51:54,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:51:54,611 INFO L87 Difference]: Start difference. First operand 762 states and 1223 transitions. Second operand 10 states. [2020-10-12 20:51:57,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:57,160 INFO L93 Difference]: Finished difference Result 1350 states and 2157 transitions. [2020-10-12 20:51:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:51:57,161 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 20:51:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:57,165 INFO L225 Difference]: With dead ends: 1350 [2020-10-12 20:51:57,165 INFO L226 Difference]: Without dead ends: 857 [2020-10-12 20:51:57,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:51:57,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-12 20:51:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 762. [2020-10-12 20:51:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2020-10-12 20:51:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1223 transitions. [2020-10-12 20:51:57,189 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1223 transitions. Word has length 114 [2020-10-12 20:51:57,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:57,191 INFO L479 AbstractCegarLoop]: Abstraction has 762 states and 1223 transitions. [2020-10-12 20:51:57,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:51:57,191 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1223 transitions. [2020-10-12 20:51:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:51:57,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:57,196 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 20:51:57,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:51:57,196 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:57,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:57,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1571590277, now seen corresponding path program 1 times [2020-10-12 20:51:57,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:57,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564686752] [2020-10-12 20:51:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:57,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:57,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:02,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:02,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:02,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:52:02,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:52:02,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:52:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 20:52:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:02,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:02,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:02,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:02,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:02,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:02,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:02,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:02,753 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 20:52:02,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564686752] [2020-10-12 20:52:02,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:02,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:52:02,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128096363] [2020-10-12 20:52:02,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:52:02,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:02,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:52:02,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:52:02,755 INFO L87 Difference]: Start difference. First operand 762 states and 1223 transitions. Second operand 11 states. [2020-10-12 20:52:04,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:04,896 INFO L93 Difference]: Finished difference Result 1722 states and 2765 transitions. [2020-10-12 20:52:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:52:04,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2020-10-12 20:52:04,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:04,908 INFO L225 Difference]: With dead ends: 1722 [2020-10-12 20:52:04,908 INFO L226 Difference]: Without dead ends: 976 [2020-10-12 20:52:04,910 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 20:52:04,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-10-12 20:52:04,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 961. [2020-10-12 20:52:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-10-12 20:52:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1546 transitions. [2020-10-12 20:52:04,941 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1546 transitions. Word has length 114 [2020-10-12 20:52:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:04,942 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1546 transitions. [2020-10-12 20:52:04,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:52:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1546 transitions. [2020-10-12 20:52:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:52:04,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:04,944 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 20:52:04,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:52:04,945 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1161533211, now seen corresponding path program 1 times [2020-10-12 20:52:04,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:04,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892085214] [2020-10-12 20:52:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:04,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:10,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:10,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:52:10,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-12 20:52:10,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:52:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:52:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:10,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:10,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:10,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:10,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:52:10,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:10,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:10,666 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 20:52:10,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892085214] [2020-10-12 20:52:10,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:10,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 20:52:10,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617617963] [2020-10-12 20:52:10,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:52:10,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:10,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:52:10,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:52:10,669 INFO L87 Difference]: Start difference. First operand 961 states and 1546 transitions. Second operand 12 states. [2020-10-12 20:52:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:13,258 INFO L93 Difference]: Finished difference Result 2424 states and 3887 transitions. [2020-10-12 20:52:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:52:13,259 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-10-12 20:52:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:13,265 INFO L225 Difference]: With dead ends: 2424 [2020-10-12 20:52:13,265 INFO L226 Difference]: Without dead ends: 1479 [2020-10-12 20:52:13,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:52:13,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2020-10-12 20:52:13,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1203. [2020-10-12 20:52:13,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-10-12 20:52:13,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1938 transitions. [2020-10-12 20:52:13,307 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1938 transitions. Word has length 115 [2020-10-12 20:52:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:13,308 INFO L479 AbstractCegarLoop]: Abstraction has 1203 states and 1938 transitions. [2020-10-12 20:52:13,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:52:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1938 transitions. [2020-10-12 20:52:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:52:13,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:13,310 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 20:52:13,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:52:13,310 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:13,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:13,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1027519705, now seen corresponding path program 1 times [2020-10-12 20:52:13,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:13,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973656229] [2020-10-12 20:52:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:13,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:18,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:18,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:52:18,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4877 [2020-10-12 20:52:18,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:52:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:52:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:18,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:18,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:18,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:18,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:18,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:18,835 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 20:52:18,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973656229] [2020-10-12 20:52:18,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:18,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:52:18,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209247029] [2020-10-12 20:52:18,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:52:18,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:18,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:52:18,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:52:18,837 INFO L87 Difference]: Start difference. First operand 1203 states and 1938 transitions. Second operand 11 states. [2020-10-12 20:52:22,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:22,498 INFO L93 Difference]: Finished difference Result 2067 states and 3295 transitions. [2020-10-12 20:52:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:52:22,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 115 [2020-10-12 20:52:22,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:22,505 INFO L225 Difference]: With dead ends: 2067 [2020-10-12 20:52:22,505 INFO L226 Difference]: Without dead ends: 1572 [2020-10-12 20:52:22,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-12 20:52:22,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2020-10-12 20:52:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1202. [2020-10-12 20:52:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-10-12 20:52:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1937 transitions. [2020-10-12 20:52:22,549 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1937 transitions. Word has length 115 [2020-10-12 20:52:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:22,549 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1937 transitions. [2020-10-12 20:52:22,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:52:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1937 transitions. [2020-10-12 20:52:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:22,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:22,552 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 20:52:22,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:52:22,553 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:22,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1397120384, now seen corresponding path program 1 times [2020-10-12 20:52:22,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:22,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992924579] [2020-10-12 20:52:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:22,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:22,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:24,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:24,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:24,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2071 [2020-10-12 20:52:24,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:52:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:52:24,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:24,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:24,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:24,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:52:24,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:24,725 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 20:52:24,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992924579] [2020-10-12 20:52:24,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:24,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:24,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517896515] [2020-10-12 20:52:24,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:24,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:24,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:24,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:24,727 INFO L87 Difference]: Start difference. First operand 1202 states and 1937 transitions. Second operand 5 states. [2020-10-12 20:52:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:25,533 INFO L93 Difference]: Finished difference Result 2326 states and 3712 transitions. [2020-10-12 20:52:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:25,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:52:25,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:25,539 INFO L225 Difference]: With dead ends: 2326 [2020-10-12 20:52:25,539 INFO L226 Difference]: Without dead ends: 1356 [2020-10-12 20:52:25,540 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 20:52:25,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2020-10-12 20:52:25,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1222. [2020-10-12 20:52:25,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2020-10-12 20:52:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1973 transitions. [2020-10-12 20:52:25,577 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1973 transitions. Word has length 116 [2020-10-12 20:52:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:25,578 INFO L479 AbstractCegarLoop]: Abstraction has 1222 states and 1973 transitions. [2020-10-12 20:52:25,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1973 transitions. [2020-10-12 20:52:25,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:25,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:25,580 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 20:52:25,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:52:25,580 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:25,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:25,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1643105406, now seen corresponding path program 1 times [2020-10-12 20:52:25,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:25,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688090621] [2020-10-12 20:52:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:25,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:30,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:30,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:30,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:30,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 20:52:30,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:30,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:52:30,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:30,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:52:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:30,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:30,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:30,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:30,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:30,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:30,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:30,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:30,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:30,852 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 20:52:30,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688090621] [2020-10-12 20:52:30,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:30,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:52:30,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956097277] [2020-10-12 20:52:30,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:52:30,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:30,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:52:30,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:52:30,854 INFO L87 Difference]: Start difference. First operand 1222 states and 1973 transitions. Second operand 9 states. [2020-10-12 20:52:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:33,187 INFO L93 Difference]: Finished difference Result 2874 states and 4613 transitions. [2020-10-12 20:52:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:52:33,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-10-12 20:52:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:33,196 INFO L225 Difference]: With dead ends: 2874 [2020-10-12 20:52:33,196 INFO L226 Difference]: Without dead ends: 1668 [2020-10-12 20:52:33,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:52:33,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-10-12 20:52:33,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1274. [2020-10-12 20:52:33,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2020-10-12 20:52:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2063 transitions. [2020-10-12 20:52:33,241 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2063 transitions. Word has length 116 [2020-10-12 20:52:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:33,241 INFO L479 AbstractCegarLoop]: Abstraction has 1274 states and 2063 transitions. [2020-10-12 20:52:33,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:52:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2063 transitions. [2020-10-12 20:52:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:33,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:33,243 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 20:52:33,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:52:33,244 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:33,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:33,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1783654016, now seen corresponding path program 1 times [2020-10-12 20:52:33,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:33,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304691935] [2020-10-12 20:52:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:33,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:38,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:38,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:38,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:38,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 20:52:38,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:38,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:52:38,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:38,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:52:38,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:38,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:38,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:38,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:38,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:38,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:38,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:38,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:38,751 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 20:52:38,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304691935] [2020-10-12 20:52:38,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:38,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:52:38,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889721602] [2020-10-12 20:52:38,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:52:38,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:38,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:52:38,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:52:38,753 INFO L87 Difference]: Start difference. First operand 1274 states and 2063 transitions. Second operand 11 states. [2020-10-12 20:52:43,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:43,671 INFO L93 Difference]: Finished difference Result 2387 states and 3799 transitions. [2020-10-12 20:52:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:52:43,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-10-12 20:52:43,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:43,679 INFO L225 Difference]: With dead ends: 2387 [2020-10-12 20:52:43,679 INFO L226 Difference]: Without dead ends: 1857 [2020-10-12 20:52:43,681 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 20:52:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-10-12 20:52:43,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1278. [2020-10-12 20:52:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-10-12 20:52:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 2069 transitions. [2020-10-12 20:52:43,723 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 2069 transitions. Word has length 116 [2020-10-12 20:52:43,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:43,725 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 2069 transitions. [2020-10-12 20:52:43,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:52:43,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 2069 transitions. [2020-10-12 20:52:43,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:43,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:43,728 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 20:52:43,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:52:43,729 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash 213497093, now seen corresponding path program 1 times [2020-10-12 20:52:43,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:43,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204540254] [2020-10-12 20:52:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:44,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:44,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-12 20:52:44,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:52:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:52:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:52:44,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:44,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:44,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:44,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:44,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:44,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:44,094 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 20:52:44,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204540254] [2020-10-12 20:52:44,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:44,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:52:44,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253765915] [2020-10-12 20:52:44,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:52:44,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:44,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:52:44,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:52:44,096 INFO L87 Difference]: Start difference. First operand 1278 states and 2069 transitions. Second operand 4 states. [2020-10-12 20:52:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:44,598 INFO L93 Difference]: Finished difference Result 3800 states and 6166 transitions. [2020-10-12 20:52:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:52:44,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-12 20:52:44,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:44,628 INFO L225 Difference]: With dead ends: 3800 [2020-10-12 20:52:44,628 INFO L226 Difference]: Without dead ends: 2538 [2020-10-12 20:52:44,633 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 20:52:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2020-10-12 20:52:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2538. [2020-10-12 20:52:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2538 states. [2020-10-12 20:52:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 4102 transitions. [2020-10-12 20:52:44,734 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 4102 transitions. Word has length 116 [2020-10-12 20:52:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:44,735 INFO L479 AbstractCegarLoop]: Abstraction has 2538 states and 4102 transitions. [2020-10-12 20:52:44,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:52:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 4102 transitions. [2020-10-12 20:52:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 20:52:44,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:44,740 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 20:52:44,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:52:44,744 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:44,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1223078449, now seen corresponding path program 1 times [2020-10-12 20:52:44,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:44,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722069544] [2020-10-12 20:52:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 20:52:44,827 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 20:52:44,827 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 20:52:44,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:52:44,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:52:44 BoogieIcfgContainer [2020-10-12 20:52:44,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 20:52:44,911 INFO L168 Benchmark]: Toolchain (without parser) took 129969.53 ms. Allocated memory was 141.0 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 101.3 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 303.7 MB. Max. memory is 7.1 GB. [2020-10-12 20:52:44,911 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 20:52:44,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.89 ms. Allocated memory was 141.0 MB in the beginning and 206.6 MB in the end (delta: 65.5 MB). Free memory was 101.1 MB in the beginning and 167.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2020-10-12 20:52:44,917 INFO L168 Benchmark]: Boogie Preprocessor took 183.26 ms. Allocated memory is still 206.6 MB. Free memory was 167.8 MB in the beginning and 160.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 7.1 GB. [2020-10-12 20:52:44,917 INFO L168 Benchmark]: RCFGBuilder took 1300.11 ms. Allocated memory was 206.6 MB in the beginning and 238.6 MB in the end (delta: 32.0 MB). Free memory was 160.3 MB in the beginning and 181.2 MB in the end (delta: -20.9 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. [2020-10-12 20:52:44,918 INFO L168 Benchmark]: TraceAbstraction took 127622.46 ms. Allocated memory was 238.6 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 181.2 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 286.1 MB. Max. memory is 7.1 GB. [2020-10-12 20:52:44,919 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 858.89 ms. Allocated memory was 141.0 MB in the beginning and 206.6 MB in the end (delta: 65.5 MB). Free memory was 101.1 MB in the beginning and 167.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 183.26 ms. Allocated memory is still 206.6 MB. Free memory was 167.8 MB in the beginning and 160.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1300.11 ms. Allocated memory was 206.6 MB in the beginning and 238.6 MB in the end (delta: 32.0 MB). Free memory was 160.3 MB in the beginning and 181.2 MB in the end (delta: -20.9 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 127622.46 ms. Allocated memory was 238.6 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 181.2 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 286.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1641]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1336. Possible FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_client_data ; [L1065] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1069] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1070] s->ctx = malloc(sizeof(SSL_CTX)) [L1071] s->session = malloc(sizeof(SSL_SESSION)) [L1072] s->state = 12292 [L1073] s->version = __VERIFIER_nondet_int() [L1074] CALL ssl3_connect(s) [L1080] BUF_MEM *buf ; [L1081] unsigned long tmp ; [L1082] unsigned long l ; [L1083] long num1 ; [L1084] void (*cb)() ; [L1085] int ret ; [L1086] int new_state ; [L1087] int state ; [L1088] int skip ; [L1089] int tmp___1 = __VERIFIER_nondet_int() ; [L1090] int tmp___2 = __VERIFIER_nondet_int() ; [L1091] int tmp___3 = __VERIFIER_nondet_int() ; [L1092] int tmp___4 = __VERIFIER_nondet_int() ; [L1093] int tmp___5 = __VERIFIER_nondet_int() ; [L1094] int tmp___6 = __VERIFIER_nondet_int() ; [L1095] int tmp___7 = __VERIFIER_nondet_int() ; [L1096] int tmp___8 = __VERIFIER_nondet_int() ; [L1097] long tmp___9 = __VERIFIER_nondet_long() ; [L1098] int blastFlag ; [L1101] blastFlag = 0 [L1102] s->hit=__VERIFIER_nondet_int () [L1103] s->state = 12292 [L1104] tmp = __VERIFIER_nondet_int() [L1105] cb = (void (*)())((void *)0) [L1106] ret = -1 [L1107] skip = 0 [L1108] EXPR s->info_callback [L1108] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1109] EXPR s->info_callback [L1109] cb = s->info_callback [L1117] EXPR s->in_handshake [L1117] s->in_handshake += 1 [L1118] COND FALSE !(tmp___1 & 12288) [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND TRUE s->state == 12292 [L1234] s->new_session = 1 [L1235] s->state = 4096 [L1236] EXPR s->ctx [L1236] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1236] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1241] s->server = 0 [L1242] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) [L1247] EXPR s->version [L1247] COND FALSE !((s->version & 65280) != 768) [L1253] s->type = 4096 [L1254] EXPR s->init_buf [L1254] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1272] COND FALSE !(! tmp___4) [L1278] COND FALSE !(! tmp___5) [L1284] s->state = 4368 [L1285] EXPR s->ctx [L1285] EXPR (s->ctx)->stats.sess_connect [L1285] (s->ctx)->stats.sess_connect += 1 [L1286] s->init_num = 0 [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND TRUE s->state == 4368 [L1290] s->shutdown = 0 [L1291] ret = __VERIFIER_nondet_int() [L1292] COND TRUE blastFlag == 0 [L1293] blastFlag = 1 [L1297] COND FALSE !(ret <= 0) [L1302] s->state = 4384 [L1303] s->init_num = 0 [L1304] EXPR s->bbio [L1304] EXPR s->wbio [L1304] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND TRUE s->state == 4384 [L1312] ret = __VERIFIER_nondet_int() [L1313] COND TRUE blastFlag == 1 [L1314] blastFlag = 2 [L1322] COND FALSE !(ret <= 0) [L1327] s->hit [L1327] COND FALSE !(s->hit) [L1330] s->state = 4400 [L1332] s->init_num = 0 [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND FALSE !(s->state == 4384) [L1155] EXPR s->state [L1155] COND FALSE !(s->state == 4385) [L1158] EXPR s->state [L1158] COND TRUE s->state == 4400 [L1336] EXPR s->s3 [L1336] EXPR (s->s3)->tmp.new_cipher [L1336] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1336] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1339] ret = __VERIFIER_nondet_int() [L1340] COND TRUE blastFlag == 2 [L1341] blastFlag = 3 [L1345] COND FALSE !(ret <= 0) [L1351] s->state = 4416 [L1352] s->init_num = 0 [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND FALSE !(s->state == 4384) [L1155] EXPR s->state [L1155] COND FALSE !(s->state == 4385) [L1158] EXPR s->state [L1158] COND FALSE !(s->state == 4400) [L1161] EXPR s->state [L1161] COND FALSE !(s->state == 4401) [L1164] EXPR s->state [L1164] COND TRUE s->state == 4416 [L1356] ret = __VERIFIER_nondet_int() [L1357] COND TRUE blastFlag == 3 [L1358] blastFlag = 4 [L1362] COND FALSE !(ret <= 0) [L1367] s->state = 4432 [L1368] s->init_num = 0 [L1369] COND FALSE !(! tmp___6) [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND FALSE !(s->state == 4384) [L1155] EXPR s->state [L1155] COND FALSE !(s->state == 4385) [L1158] EXPR s->state [L1158] COND FALSE !(s->state == 4400) [L1161] EXPR s->state [L1161] COND FALSE !(s->state == 4401) [L1164] EXPR s->state [L1164] COND FALSE !(s->state == 4416) [L1167] EXPR s->state [L1167] COND FALSE !(s->state == 4417) [L1170] EXPR s->state [L1170] COND TRUE s->state == 4432 [L1378] ret = __VERIFIER_nondet_int() [L1379] COND TRUE blastFlag == 4 [L1641] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 127.4s, OverallIterations: 32, TraceHistogramMax: 6, AutomataDifference: 42.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5857 SDtfs, 5081 SDslu, 14069 SDs, 0 SdLazy, 21065 SolverSat, 851 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 370 GetRequests, 114 SyntacticMatches, 58 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2538occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 31 MinimizatonAttempts, 4225 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 81.8s InterpolantComputationTime, 3177 NumberOfCodeBlocks, 3177 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 3028 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 23 PerfectInterpolantSequences, 2110/2455 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...