/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.04.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:50:43,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:50:43,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:50:43,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:50:43,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:50:43,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:50:43,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:50:43,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:50:43,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:50:43,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:50:43,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:50:43,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:50:43,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:50:43,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:50:43,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:50:43,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:50:43,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:50:43,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:50:43,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:50:43,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:50:43,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:50:43,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:50:43,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:50:43,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:50:43,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:50:43,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:50:43,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:50:43,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:50:43,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:50:43,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:50:43,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:50:43,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:50:43,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:50:43,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:50:43,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:50:43,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:50:43,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:50:43,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:50:43,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:50:43,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:50:43,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:50:43,622 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 20:50:43,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:50:43,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:50:43,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:50:43,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:50:43,664 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:50:43,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:50:43,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:50:43,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:50:43,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:50:43,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:50:43,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:50:43,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:50:43,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:50:43,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:50:43,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:50:43,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:50:43,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:50:43,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:50:43,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:50:43,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:50:43,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:50:43,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:50:43,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:50:43,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:50:43,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:50:43,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:50:43,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:50:43,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:50:43,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:50:43,670 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 20:50:44,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:50:44,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:50:44,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:50:44,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:50:44,045 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:50:44,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_clnt.blast.04.i.cil-1.c [2020-10-12 20:50:44,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d2bade6f/b4077a0ebc4349518f64f0bf63392faf/FLAG416af3b1e [2020-10-12 20:50:44,672 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:50:44,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_clnt.blast.04.i.cil-1.c [2020-10-12 20:50:44,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d2bade6f/b4077a0ebc4349518f64f0bf63392faf/FLAG416af3b1e [2020-10-12 20:50:44,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d2bade6f/b4077a0ebc4349518f64f0bf63392faf [2020-10-12 20:50:44,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:50:44,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:50:44,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:50:44,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:50:44,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:50:44,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:50:44" (1/1) ... [2020-10-12 20:50:44,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e399bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:44, skipping insertion in model container [2020-10-12 20:50:44,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:50:44" (1/1) ... [2020-10-12 20:50:44,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:50:45,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:50:45,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:50:45,597 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:50:45,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:50:45,822 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:50:45,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:45 WrapperNode [2020-10-12 20:50:45,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:50:45,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:50:45,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:50:45,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:50:45,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:45" (1/1) ... [2020-10-12 20:50:45,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:45" (1/1) ... [2020-10-12 20:50:45,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:45" (1/1) ... [2020-10-12 20:50:45,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:45" (1/1) ... [2020-10-12 20:50:45,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:45" (1/1) ... [2020-10-12 20:50:45,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:45" (1/1) ... [2020-10-12 20:50:45,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:45" (1/1) ... [2020-10-12 20:50:45,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:50:45,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:50:45,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:50:45,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:50:46,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:45" (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 20:50:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:50:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:50:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2020-10-12 20:50:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2020-10-12 20:50:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:50:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-12 20:50:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:50:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:50:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:50:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:50:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:50:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:50:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:50:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:50:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:50:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:50:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2020-10-12 20:50:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:50:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-12 20:50:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2020-10-12 20:50:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:50:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:50:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:50:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:50:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:50:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:50:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:50:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:50:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:50:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:50:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:50:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:50:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:50:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:50:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:50:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:50:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:50:46,592 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:50:47,182 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-12 20:50:47,182 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-12 20:50:47,214 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:50:47,215 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:50:47,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:50:47 BoogieIcfgContainer [2020-10-12 20:50:47,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:50:47,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:50:47,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:50:47,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:50:47,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:50:44" (1/3) ... [2020-10-12 20:50:47,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286519e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:50:47, skipping insertion in model container [2020-10-12 20:50:47,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:50:45" (2/3) ... [2020-10-12 20:50:47,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286519e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:50:47, skipping insertion in model container [2020-10-12 20:50:47,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:50:47" (3/3) ... [2020-10-12 20:50:47,233 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.04.i.cil-1.c [2020-10-12 20:50:47,244 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:50:47,252 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:50:47,268 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:50:47,301 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:50:47,301 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:50:47,301 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:50:47,301 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:50:47,302 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:50:47,302 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:50:47,303 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:50:47,303 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:50:47,332 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-10-12 20:50:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 20:50:47,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:47,344 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 20:50:47,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:47,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:47,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1671955434, now seen corresponding path program 1 times [2020-10-12 20:50:47,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:47,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590664267] [2020-10-12 20:50:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:47,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:48,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:48,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 20:50:48,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:48,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-12 20:50:48,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:50:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 20:50:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:50:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:48,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:48,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:48,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:48,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:50:48,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:48,888 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 20:50:48,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590664267] [2020-10-12 20:50:48,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:48,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:48,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37541490] [2020-10-12 20:50:48,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:48,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:48,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:48,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:48,919 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 5 states. [2020-10-12 20:50:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:49,938 INFO L93 Difference]: Finished difference Result 267 states and 442 transitions. [2020-10-12 20:50:49,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:49,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-12 20:50:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:49,954 INFO L225 Difference]: With dead ends: 267 [2020-10-12 20:50:49,954 INFO L226 Difference]: Without dead ends: 122 [2020-10-12 20:50:49,959 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 20:50:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-12 20:50:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-12 20:50:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 20:50:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 178 transitions. [2020-10-12 20:50:50,015 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 178 transitions. Word has length 30 [2020-10-12 20:50:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:50,015 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 178 transitions. [2020-10-12 20:50:50,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 178 transitions. [2020-10-12 20:50:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 20:50:50,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:50,018 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 20:50:50,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:50:50,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:50,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:50,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1881881790, now seen corresponding path program 1 times [2020-10-12 20:50:50,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:50,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645296322] [2020-10-12 20:50:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:50,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:51,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:53,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:53,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 20:50:53,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:50:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3174 [2020-10-12 20:50:53,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 20:50:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:50:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:50:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:53,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:53,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:53,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:53,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:53,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:50:53,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:53,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:53,468 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 20:50:53,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645296322] [2020-10-12 20:50:53,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:50:53,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:50:53,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925741770] [2020-10-12 20:50:53,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:50:53,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:53,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:50:53,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:50:53,473 INFO L87 Difference]: Start difference. First operand 121 states and 178 transitions. Second operand 9 states. [2020-10-12 20:50:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:55,008 INFO L93 Difference]: Finished difference Result 354 states and 528 transitions. [2020-10-12 20:50:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:50:55,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-12 20:50:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:55,012 INFO L225 Difference]: With dead ends: 354 [2020-10-12 20:50:55,013 INFO L226 Difference]: Without dead ends: 249 [2020-10-12 20:50:55,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:50:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-12 20:50:55,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 228. [2020-10-12 20:50:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-12 20:50:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 346 transitions. [2020-10-12 20:50:55,038 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 346 transitions. Word has length 44 [2020-10-12 20:50:55,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:55,039 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 346 transitions. [2020-10-12 20:50:55,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:50:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 346 transitions. [2020-10-12 20:50:55,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 20:50:55,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:55,041 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 20:50:55,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:50:55,042 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:55,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:55,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1265144394, now seen corresponding path program 1 times [2020-10-12 20:50:55,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:55,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917613997] [2020-10-12 20:50:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:55,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:55,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:55,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 20:50:55,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:55,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-12 20:50:55,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:50:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 20:50:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:50:55,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:56,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:56,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:56,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:56,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:56,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:56,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:56,032 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 20:50:56,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917613997] [2020-10-12 20:50:56,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:56,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:56,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520397139] [2020-10-12 20:50:56,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:56,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:56,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:56,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:56,035 INFO L87 Difference]: Start difference. First operand 228 states and 346 transitions. Second operand 5 states. [2020-10-12 20:50:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:56,706 INFO L93 Difference]: Finished difference Result 510 states and 778 transitions. [2020-10-12 20:50:56,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:56,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-12 20:50:56,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:56,714 INFO L225 Difference]: With dead ends: 510 [2020-10-12 20:50:56,714 INFO L226 Difference]: Without dead ends: 298 [2020-10-12 20:50:56,717 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 20:50:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-12 20:50:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 264. [2020-10-12 20:50:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-12 20:50:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 406 transitions. [2020-10-12 20:50:56,768 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 406 transitions. Word has length 59 [2020-10-12 20:50:56,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:56,769 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 406 transitions. [2020-10-12 20:50:56,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:56,769 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 406 transitions. [2020-10-12 20:50:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:50:56,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:56,774 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 20:50:56,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:50:56,777 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:56,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1983289988, now seen corresponding path program 1 times [2020-10-12 20:50:56,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:56,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890827507] [2020-10-12 20:50:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:56,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:57,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:57,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:50:57,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:50:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-10-12 20:50:57,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:50:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:50:57,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:57,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:57,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:57,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:57,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:57,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:57,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:57,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:57,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:57,935 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 20:50:57,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890827507] [2020-10-12 20:50:57,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:57,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:57,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4936660] [2020-10-12 20:50:57,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:57,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:57,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:57,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:57,939 INFO L87 Difference]: Start difference. First operand 264 states and 406 transitions. Second operand 5 states. [2020-10-12 20:50:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:58,723 INFO L93 Difference]: Finished difference Result 692 states and 1071 transitions. [2020-10-12 20:50:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:58,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-12 20:50:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:58,727 INFO L225 Difference]: With dead ends: 692 [2020-10-12 20:50:58,727 INFO L226 Difference]: Without dead ends: 444 [2020-10-12 20:50:58,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:50:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-12 20:50:58,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 314. [2020-10-12 20:50:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-12 20:50:58,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 492 transitions. [2020-10-12 20:50:58,747 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 492 transitions. Word has length 77 [2020-10-12 20:50:58,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:58,748 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 492 transitions. [2020-10-12 20:50:58,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 492 transitions. [2020-10-12 20:50:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:50:58,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:58,750 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 20:50:58,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:50:58,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:58,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:58,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1849276482, now seen corresponding path program 1 times [2020-10-12 20:50:58,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:58,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281979037] [2020-10-12 20:50:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:00,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:00,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:51:00,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-10-12 20:51:00,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:51:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:00,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:00,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:00,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:51:00,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:00,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:00,874 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 20:51:00,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281979037] [2020-10-12 20:51:00,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:00,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:00,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782322667] [2020-10-12 20:51:00,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:00,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:00,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:00,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:00,880 INFO L87 Difference]: Start difference. First operand 314 states and 492 transitions. Second operand 5 states. [2020-10-12 20:51:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:01,615 INFO L93 Difference]: Finished difference Result 698 states and 1096 transitions. [2020-10-12 20:51:01,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:01,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-12 20:51:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:01,621 INFO L225 Difference]: With dead ends: 698 [2020-10-12 20:51:01,621 INFO L226 Difference]: Without dead ends: 400 [2020-10-12 20:51:01,622 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 20:51:01,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-12 20:51:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 354. [2020-10-12 20:51:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-12 20:51:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 560 transitions. [2020-10-12 20:51:01,639 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 560 transitions. Word has length 77 [2020-10-12 20:51:01,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:01,639 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 560 transitions. [2020-10-12 20:51:01,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:01,639 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 560 transitions. [2020-10-12 20:51:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:51:01,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:01,645 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, 1] [2020-10-12 20:51:01,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:51:01,645 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:01,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:01,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1347761717, now seen corresponding path program 1 times [2020-10-12 20:51:01,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:01,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334150116] [2020-10-12 20:51:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:01,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:02,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:02,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:51:02,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:51:02,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-12 20:51:02,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:51:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:02,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:02,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:02,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:02,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:02,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:02,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:02,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:02,585 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 20:51:02,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334150116] [2020-10-12 20:51:02,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:02,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:02,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820892319] [2020-10-12 20:51:02,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:02,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:02,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:02,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:02,588 INFO L87 Difference]: Start difference. First operand 354 states and 560 transitions. Second operand 5 states. [2020-10-12 20:51:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:03,473 INFO L93 Difference]: Finished difference Result 814 states and 1282 transitions. [2020-10-12 20:51:03,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:03,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:51:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:03,477 INFO L225 Difference]: With dead ends: 814 [2020-10-12 20:51:03,477 INFO L226 Difference]: Without dead ends: 476 [2020-10-12 20:51:03,478 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 20:51:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-12 20:51:03,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 356. [2020-10-12 20:51:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-12 20:51:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 562 transitions. [2020-10-12 20:51:03,493 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 562 transitions. Word has length 78 [2020-10-12 20:51:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:03,494 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 562 transitions. [2020-10-12 20:51:03,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 562 transitions. [2020-10-12 20:51:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:51:03,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:03,501 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 20:51:03,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:51:03,502 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:03,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:03,502 INFO L82 PathProgramCache]: Analyzing trace with hash -789594059, now seen corresponding path program 1 times [2020-10-12 20:51:03,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:03,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771331180] [2020-10-12 20:51:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:03,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:03,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:04,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:07,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:07,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:51:07,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:51:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3774 [2020-10-12 20:51:07,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:51:07,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:07,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:07,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:07,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:07,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:07,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:07,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:51:07,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:07,422 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 20:51:07,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771331180] [2020-10-12 20:51:07,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:07,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:07,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100906285] [2020-10-12 20:51:07,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:07,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:07,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:07,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:07,427 INFO L87 Difference]: Start difference. First operand 356 states and 562 transitions. Second operand 5 states. [2020-10-12 20:51:08,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:08,406 INFO L93 Difference]: Finished difference Result 816 states and 1282 transitions. [2020-10-12 20:51:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:08,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:51:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:08,412 INFO L225 Difference]: With dead ends: 816 [2020-10-12 20:51:08,412 INFO L226 Difference]: Without dead ends: 476 [2020-10-12 20:51:08,414 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 20:51:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-12 20:51:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 356. [2020-10-12 20:51:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-12 20:51:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 560 transitions. [2020-10-12 20:51:08,429 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 560 transitions. Word has length 95 [2020-10-12 20:51:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:08,430 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 560 transitions. [2020-10-12 20:51:08,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 560 transitions. [2020-10-12 20:51:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:51:08,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:08,431 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 20:51:08,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:51:08,432 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:08,432 INFO L82 PathProgramCache]: Analyzing trace with hash -541447565, now seen corresponding path program 1 times [2020-10-12 20:51:08,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:08,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191119902] [2020-10-12 20:51:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:08,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:09,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:09,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:51:09,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:09,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-12 20:51:09,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:09,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:51:09,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 20:51:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:51:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:09,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:09,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:09,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:09,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:09,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:09,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:09,681 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 20:51:09,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191119902] [2020-10-12 20:51:09,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:09,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:09,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87552133] [2020-10-12 20:51:09,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:09,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:09,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:09,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:09,683 INFO L87 Difference]: Start difference. First operand 356 states and 560 transitions. Second operand 5 states. [2020-10-12 20:51:10,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:10,577 INFO L93 Difference]: Finished difference Result 792 states and 1248 transitions. [2020-10-12 20:51:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:10,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:51:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:10,583 INFO L225 Difference]: With dead ends: 792 [2020-10-12 20:51:10,583 INFO L226 Difference]: Without dead ends: 452 [2020-10-12 20:51:10,585 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 20:51:10,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-12 20:51:10,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 400. [2020-10-12 20:51:10,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 20:51:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 636 transitions. [2020-10-12 20:51:10,608 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 636 transitions. Word has length 95 [2020-10-12 20:51:10,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:10,609 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 636 transitions. [2020-10-12 20:51:10,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 636 transitions. [2020-10-12 20:51:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 20:51:10,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:10,612 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 20:51:10,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:51:10,612 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:10,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:10,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1222656569, now seen corresponding path program 1 times [2020-10-12 20:51:10,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:10,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983829599] [2020-10-12 20:51:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:10,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:11,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:11,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 20:51:11,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:51:11,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1278 [2020-10-12 20:51:11,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:51:11,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:12,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:12,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:12,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:12,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:12,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:12,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:12,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:12,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:12,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:12,040 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 20:51:12,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983829599] [2020-10-12 20:51:12,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:12,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:12,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020298479] [2020-10-12 20:51:12,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:12,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:12,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:12,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:12,043 INFO L87 Difference]: Start difference. First operand 400 states and 636 transitions. Second operand 5 states. [2020-10-12 20:51:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:12,931 INFO L93 Difference]: Finished difference Result 904 states and 1430 transitions. [2020-10-12 20:51:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:12,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-12 20:51:12,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:12,935 INFO L225 Difference]: With dead ends: 904 [2020-10-12 20:51:12,935 INFO L226 Difference]: Without dead ends: 520 [2020-10-12 20:51:12,936 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 20:51:12,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-10-12 20:51:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 400. [2020-10-12 20:51:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 20:51:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 634 transitions. [2020-10-12 20:51:12,952 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 634 transitions. Word has length 98 [2020-10-12 20:51:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:12,953 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 634 transitions. [2020-10-12 20:51:12,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 634 transitions. [2020-10-12 20:51:12,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 20:51:12,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:12,955 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 20:51:12,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:51:12,955 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:12,955 INFO L82 PathProgramCache]: Analyzing trace with hash -372871544, now seen corresponding path program 1 times [2020-10-12 20:51:12,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:12,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326608297] [2020-10-12 20:51:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:14,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:14,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:51:14,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:51:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-12 20:51:14,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:51:14,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:14,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:14,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:14,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:14,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:14,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:14,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:14,110 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 20:51:14,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326608297] [2020-10-12 20:51:14,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:14,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:14,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464549545] [2020-10-12 20:51:14,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:14,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:14,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:14,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:14,113 INFO L87 Difference]: Start difference. First operand 400 states and 634 transitions. Second operand 5 states. [2020-10-12 20:51:14,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:14,986 INFO L93 Difference]: Finished difference Result 898 states and 1418 transitions. [2020-10-12 20:51:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:14,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-12 20:51:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:14,991 INFO L225 Difference]: With dead ends: 898 [2020-10-12 20:51:14,991 INFO L226 Difference]: Without dead ends: 514 [2020-10-12 20:51:14,992 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 20:51:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-12 20:51:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 400. [2020-10-12 20:51:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 20:51:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 632 transitions. [2020-10-12 20:51:15,008 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 632 transitions. Word has length 99 [2020-10-12 20:51:15,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:15,009 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 632 transitions. [2020-10-12 20:51:15,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:15,009 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 632 transitions. [2020-10-12 20:51:15,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:51:15,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:15,012 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 20:51:15,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:51:15,012 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:15,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:15,013 INFO L82 PathProgramCache]: Analyzing trace with hash -731965084, now seen corresponding path program 1 times [2020-10-12 20:51:15,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:15,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068204732] [2020-10-12 20:51:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:15,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:17,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:17,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:51:17,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2635 [2020-10-12 20:51:17,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-12 20:51:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:17,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:17,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:17,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:17,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:17,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:17,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:17,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:17,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:17,790 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 20:51:17,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068204732] [2020-10-12 20:51:17,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:17,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:17,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435656945] [2020-10-12 20:51:17,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:17,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:17,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:17,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:17,797 INFO L87 Difference]: Start difference. First operand 400 states and 632 transitions. Second operand 5 states. [2020-10-12 20:51:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:18,789 INFO L93 Difference]: Finished difference Result 964 states and 1523 transitions. [2020-10-12 20:51:18,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:18,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:51:18,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:18,794 INFO L225 Difference]: With dead ends: 964 [2020-10-12 20:51:18,794 INFO L226 Difference]: Without dead ends: 580 [2020-10-12 20:51:18,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-12 20:51:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 450. [2020-10-12 20:51:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-12 20:51:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 718 transitions. [2020-10-12 20:51:18,818 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 718 transitions. Word has length 102 [2020-10-12 20:51:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:18,819 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 718 transitions. [2020-10-12 20:51:18,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 718 transitions. [2020-10-12 20:51:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:51:18,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:18,821 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 20:51:18,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:51:18,821 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:18,822 INFO L82 PathProgramCache]: Analyzing trace with hash -865978590, now seen corresponding path program 1 times [2020-10-12 20:51:18,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:18,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625344128] [2020-10-12 20:51:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:21,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:21,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:51:21,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:21,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2425 [2020-10-12 20:51:21,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:21,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:21,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-12 20:51:21,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:21,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:21,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:21,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:21,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:21,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:21,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:51:21,368 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 20:51:21,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625344128] [2020-10-12 20:51:21,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:21,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:21,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587260330] [2020-10-12 20:51:21,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:21,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:21,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:21,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:21,370 INFO L87 Difference]: Start difference. First operand 450 states and 718 transitions. Second operand 5 states. [2020-10-12 20:51:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:22,310 INFO L93 Difference]: Finished difference Result 1062 states and 1693 transitions. [2020-10-12 20:51:22,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:22,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:51:22,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:22,317 INFO L225 Difference]: With dead ends: 1062 [2020-10-12 20:51:22,318 INFO L226 Difference]: Without dead ends: 628 [2020-10-12 20:51:22,319 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 20:51:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-12 20:51:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 448. [2020-10-12 20:51:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-12 20:51:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 716 transitions. [2020-10-12 20:51:22,340 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 716 transitions. Word has length 102 [2020-10-12 20:51:22,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:22,341 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 716 transitions. [2020-10-12 20:51:22,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:22,341 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 716 transitions. [2020-10-12 20:51:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:51:22,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:22,343 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 20:51:22,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:51:22,343 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:22,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1220766891, now seen corresponding path program 1 times [2020-10-12 20:51:22,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:22,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081070552] [2020-10-12 20:51:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:22,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:24,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:24,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:51:24,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1768 [2020-10-12 20:51:24,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:51:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:24,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:24,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:24,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:24,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:24,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:24,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:24,227 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 20:51:24,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081070552] [2020-10-12 20:51:24,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:24,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:24,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405487112] [2020-10-12 20:51:24,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:24,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:24,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:24,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:24,229 INFO L87 Difference]: Start difference. First operand 448 states and 716 transitions. Second operand 5 states. [2020-10-12 20:51:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:25,033 INFO L93 Difference]: Finished difference Result 994 states and 1582 transitions. [2020-10-12 20:51:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:25,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:51:25,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:25,037 INFO L225 Difference]: With dead ends: 994 [2020-10-12 20:51:25,037 INFO L226 Difference]: Without dead ends: 562 [2020-10-12 20:51:25,038 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 20:51:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-12 20:51:25,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 450. [2020-10-12 20:51:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-12 20:51:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 718 transitions. [2020-10-12 20:51:25,056 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 718 transitions. Word has length 103 [2020-10-12 20:51:25,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:25,056 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 718 transitions. [2020-10-12 20:51:25,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:25,056 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 718 transitions. [2020-10-12 20:51:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:51:25,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:25,058 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 20:51:25,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:51:25,058 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:25,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:25,058 INFO L82 PathProgramCache]: Analyzing trace with hash -183156396, now seen corresponding path program 1 times [2020-10-12 20:51:25,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:25,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524152661] [2020-10-12 20:51:25,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:26,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:26,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:51:26,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:26,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-10-12 20:51:26,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:51:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:26,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:26,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:26,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:26,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:51:26,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:26,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:26,583 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 20:51:26,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524152661] [2020-10-12 20:51:26,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:26,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:26,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318934972] [2020-10-12 20:51:26,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:26,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:26,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:26,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:26,586 INFO L87 Difference]: Start difference. First operand 450 states and 718 transitions. Second operand 5 states. [2020-10-12 20:51:27,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:27,380 INFO L93 Difference]: Finished difference Result 996 states and 1582 transitions. [2020-10-12 20:51:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:27,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:51:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:27,389 INFO L225 Difference]: With dead ends: 996 [2020-10-12 20:51:27,389 INFO L226 Difference]: Without dead ends: 562 [2020-10-12 20:51:27,390 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 20:51:27,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-12 20:51:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 454. [2020-10-12 20:51:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-10-12 20:51:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 724 transitions. [2020-10-12 20:51:27,406 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 724 transitions. Word has length 103 [2020-10-12 20:51:27,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:27,406 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 724 transitions. [2020-10-12 20:51:27,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 724 transitions. [2020-10-12 20:51:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:51:27,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:27,408 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 20:51:27,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:51:27,409 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:27,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:27,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1085316902, now seen corresponding path program 1 times [2020-10-12 20:51:27,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:27,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832816627] [2020-10-12 20:51:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:27,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:27,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:29,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:29,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:51:29,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:29,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1962 [2020-10-12 20:51:29,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 20:51:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:51:29,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:29,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:29,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:29,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:29,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:29,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:29,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:29,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:29,480 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 20:51:29,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832816627] [2020-10-12 20:51:29,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:29,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:29,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926628139] [2020-10-12 20:51:29,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:29,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:29,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:29,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:29,482 INFO L87 Difference]: Start difference. First operand 454 states and 724 transitions. Second operand 5 states. [2020-10-12 20:51:30,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:30,295 INFO L93 Difference]: Finished difference Result 1064 states and 1696 transitions. [2020-10-12 20:51:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:30,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:51:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:30,299 INFO L225 Difference]: With dead ends: 1064 [2020-10-12 20:51:30,300 INFO L226 Difference]: Without dead ends: 626 [2020-10-12 20:51:30,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:30,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-12 20:51:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 506. [2020-10-12 20:51:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-12 20:51:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 812 transitions. [2020-10-12 20:51:30,317 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 812 transitions. Word has length 104 [2020-10-12 20:51:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:30,317 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 812 transitions. [2020-10-12 20:51:30,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 812 transitions. [2020-10-12 20:51:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:51:30,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:30,319 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 20:51:30,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:51:30,319 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:30,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:30,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1225865512, now seen corresponding path program 1 times [2020-10-12 20:51:30,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:30,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979622487] [2020-10-12 20:51:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:30,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:32,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:32,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:51:32,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1768 [2020-10-12 20:51:32,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 20:51:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:51:32,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:32,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:32,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:32,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:32,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:51:32,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:32,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:32,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:32,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:32,191 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 20:51:32,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979622487] [2020-10-12 20:51:32,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:32,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:32,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647228981] [2020-10-12 20:51:32,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:32,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:32,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:32,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:32,193 INFO L87 Difference]: Start difference. First operand 506 states and 812 transitions. Second operand 5 states. [2020-10-12 20:51:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:33,051 INFO L93 Difference]: Finished difference Result 1118 states and 1786 transitions. [2020-10-12 20:51:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:33,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:51:33,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:33,059 INFO L225 Difference]: With dead ends: 1118 [2020-10-12 20:51:33,059 INFO L226 Difference]: Without dead ends: 628 [2020-10-12 20:51:33,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-12 20:51:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 456. [2020-10-12 20:51:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-12 20:51:33,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 726 transitions. [2020-10-12 20:51:33,083 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 726 transitions. Word has length 104 [2020-10-12 20:51:33,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:33,084 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 726 transitions. [2020-10-12 20:51:33,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:33,084 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 726 transitions. [2020-10-12 20:51:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:51:33,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:33,086 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 20:51:33,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:51:33,086 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:33,086 INFO L82 PathProgramCache]: Analyzing trace with hash -990176365, now seen corresponding path program 1 times [2020-10-12 20:51:33,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:33,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138934681] [2020-10-12 20:51:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:33,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:33,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:34,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:34,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:51:34,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1659 [2020-10-12 20:51:34,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:34,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:34,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:34,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:51:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:34,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:34,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:34,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:34,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:34,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:51:34,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:34,844 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 20:51:34,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138934681] [2020-10-12 20:51:34,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:34,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:34,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135402969] [2020-10-12 20:51:34,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:34,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:34,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:34,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:34,846 INFO L87 Difference]: Start difference. First operand 456 states and 726 transitions. Second operand 5 states. [2020-10-12 20:51:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:35,582 INFO L93 Difference]: Finished difference Result 1004 states and 1590 transitions. [2020-10-12 20:51:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:35,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:51:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:35,591 INFO L225 Difference]: With dead ends: 1004 [2020-10-12 20:51:35,591 INFO L226 Difference]: Without dead ends: 564 [2020-10-12 20:51:35,592 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 20:51:35,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-12 20:51:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 464. [2020-10-12 20:51:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-12 20:51:35,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 740 transitions. [2020-10-12 20:51:35,606 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 740 transitions. Word has length 108 [2020-10-12 20:51:35,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:35,607 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 740 transitions. [2020-10-12 20:51:35,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 740 transitions. [2020-10-12 20:51:35,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 20:51:35,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:35,608 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 20:51:35,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:51:35,609 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:35,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:35,609 INFO L82 PathProgramCache]: Analyzing trace with hash 716952276, now seen corresponding path program 1 times [2020-10-12 20:51:35,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:35,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353663458] [2020-10-12 20:51:35,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:35,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:35,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:36,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:37,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:37,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:51:37,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1800 [2020-10-12 20:51:37,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:51:37,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:37,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:37,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:37,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:37,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:37,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:37,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:37,531 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 20:51:37,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353663458] [2020-10-12 20:51:37,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:37,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:37,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976347586] [2020-10-12 20:51:37,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:37,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:37,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:37,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:37,540 INFO L87 Difference]: Start difference. First operand 464 states and 740 transitions. Second operand 5 states. [2020-10-12 20:51:38,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:38,358 INFO L93 Difference]: Finished difference Result 787 states and 1237 transitions. [2020-10-12 20:51:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:38,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 20:51:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:38,361 INFO L225 Difference]: With dead ends: 787 [2020-10-12 20:51:38,361 INFO L226 Difference]: Without dead ends: 564 [2020-10-12 20:51:38,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:51:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-12 20:51:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 468. [2020-10-12 20:51:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-12 20:51:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 746 transitions. [2020-10-12 20:51:38,383 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 746 transitions. Word has length 108 [2020-10-12 20:51:38,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:38,383 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 746 transitions. [2020-10-12 20:51:38,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:38,383 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 746 transitions. [2020-10-12 20:51:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:51:38,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:38,385 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 20:51:38,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:51:38,385 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:38,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash -468632510, now seen corresponding path program 1 times [2020-10-12 20:51:38,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:38,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668052420] [2020-10-12 20:51:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:38,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:39,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:40,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:40,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:51:40,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:40,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2058 [2020-10-12 20:51:40,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:40,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:40,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 20:51:40,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:40,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:40,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:40,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:40,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:40,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:40,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:40,550 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 20:51:40,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668052420] [2020-10-12 20:51:40,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:40,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:40,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442768850] [2020-10-12 20:51:40,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:40,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:40,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:40,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:40,552 INFO L87 Difference]: Start difference. First operand 468 states and 746 transitions. Second operand 5 states. [2020-10-12 20:51:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:41,431 INFO L93 Difference]: Finished difference Result 1099 states and 1750 transitions. [2020-10-12 20:51:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:41,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:51:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:41,435 INFO L225 Difference]: With dead ends: 1099 [2020-10-12 20:51:41,435 INFO L226 Difference]: Without dead ends: 647 [2020-10-12 20:51:41,437 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 20:51:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-10-12 20:51:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 517. [2020-10-12 20:51:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-10-12 20:51:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 831 transitions. [2020-10-12 20:51:41,454 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 831 transitions. Word has length 109 [2020-10-12 20:51:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:41,454 INFO L479 AbstractCegarLoop]: Abstraction has 517 states and 831 transitions. [2020-10-12 20:51:41,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 831 transitions. [2020-10-12 20:51:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:51:41,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:41,456 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 20:51:41,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:51:41,457 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:41,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:41,457 INFO L82 PathProgramCache]: Analyzing trace with hash -602646016, now seen corresponding path program 1 times [2020-10-12 20:51:41,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:41,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663691662] [2020-10-12 20:51:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:41,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:43,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:43,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:51:43,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:43,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2205 [2020-10-12 20:51:43,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 20:51:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:51:43,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:43,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:43,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:43,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:43,785 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 20:51:43,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663691662] [2020-10-12 20:51:43,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:43,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:43,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083478629] [2020-10-12 20:51:43,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:43,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:43,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:43,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:43,787 INFO L87 Difference]: Start difference. First operand 517 states and 831 transitions. Second operand 5 states. [2020-10-12 20:51:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:44,723 INFO L93 Difference]: Finished difference Result 1198 states and 1921 transitions. [2020-10-12 20:51:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:44,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:51:44,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:44,733 INFO L225 Difference]: With dead ends: 1198 [2020-10-12 20:51:44,734 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 20:51:44,735 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 20:51:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 20:51:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 518. [2020-10-12 20:51:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-12 20:51:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 832 transitions. [2020-10-12 20:51:44,752 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 832 transitions. Word has length 109 [2020-10-12 20:51:44,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:44,753 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 832 transitions. [2020-10-12 20:51:44,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:44,753 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 832 transitions. [2020-10-12 20:51:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:51:44,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:44,755 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 20:51:44,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:51:44,755 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:44,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1647391689, now seen corresponding path program 1 times [2020-10-12 20:51:44,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:44,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240902376] [2020-10-12 20:51:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:44,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:45,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:46,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:46,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:51:46,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-10-12 20:51:46,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:51:46,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:46,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:46,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:46,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:46,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:46,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:46,669 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 20:51:46,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240902376] [2020-10-12 20:51:46,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:46,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:46,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433534923] [2020-10-12 20:51:46,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:46,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:46,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:46,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:46,671 INFO L87 Difference]: Start difference. First operand 518 states and 832 transitions. Second operand 5 states. [2020-10-12 20:51:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:47,405 INFO L93 Difference]: Finished difference Result 1110 states and 1770 transitions. [2020-10-12 20:51:47,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:47,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:51:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:47,409 INFO L225 Difference]: With dead ends: 1110 [2020-10-12 20:51:47,410 INFO L226 Difference]: Without dead ends: 608 [2020-10-12 20:51:47,411 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 20:51:47,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-12 20:51:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 518. [2020-10-12 20:51:47,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-12 20:51:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 830 transitions. [2020-10-12 20:51:47,430 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 830 transitions. Word has length 110 [2020-10-12 20:51:47,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:47,431 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 830 transitions. [2020-10-12 20:51:47,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 830 transitions. [2020-10-12 20:51:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:51:47,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:47,432 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 20:51:47,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:51:47,433 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:47,433 INFO L82 PathProgramCache]: Analyzing trace with hash 402190454, now seen corresponding path program 1 times [2020-10-12 20:51:47,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:47,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411569806] [2020-10-12 20:51:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:47,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:47,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:51:49,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-10-12 20:51:49,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:51:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:51:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:49,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:49,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:49,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:49,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:49,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:49,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:49,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:49,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:49,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:49,075 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 20:51:49,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411569806] [2020-10-12 20:51:49,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:49,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:49,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312794772] [2020-10-12 20:51:49,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:49,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:49,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:49,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:49,077 INFO L87 Difference]: Start difference. First operand 518 states and 830 transitions. Second operand 5 states. [2020-10-12 20:51:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:49,804 INFO L93 Difference]: Finished difference Result 856 states and 1354 transitions. [2020-10-12 20:51:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:49,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:51:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:49,812 INFO L225 Difference]: With dead ends: 856 [2020-10-12 20:51:49,812 INFO L226 Difference]: Without dead ends: 606 [2020-10-12 20:51:49,814 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 20:51:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-12 20:51:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 520. [2020-10-12 20:51:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-12 20:51:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 832 transitions. [2020-10-12 20:51:49,832 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 832 transitions. Word has length 110 [2020-10-12 20:51:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:49,833 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 832 transitions. [2020-10-12 20:51:49,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 832 transitions. [2020-10-12 20:51:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:51:49,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:49,834 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 20:51:49,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:51:49,835 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:49,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:49,835 INFO L82 PathProgramCache]: Analyzing trace with hash 855127362, now seen corresponding path program 1 times [2020-10-12 20:51:49,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:49,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921395117] [2020-10-12 20:51:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:54,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:54,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:51:54,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:51:54,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:51:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 20:51:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:55,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:55,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:55,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:55,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:55,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:55,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:51:55,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:55,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:55,399 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 20:51:55,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921395117] [2020-10-12 20:51:55,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:55,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:51:55,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147418664] [2020-10-12 20:51:55,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:51:55,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:55,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:51:55,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:51:55,401 INFO L87 Difference]: Start difference. First operand 520 states and 832 transitions. Second operand 11 states. [2020-10-12 20:51:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:58,519 INFO L93 Difference]: Finished difference Result 1112 states and 1771 transitions. [2020-10-12 20:51:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:51:58,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-10-12 20:51:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:58,524 INFO L225 Difference]: With dead ends: 1112 [2020-10-12 20:51:58,525 INFO L226 Difference]: Without dead ends: 861 [2020-10-12 20:51:58,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:51:58,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-10-12 20:51:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 762. [2020-10-12 20:51:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2020-10-12 20:51:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1223 transitions. [2020-10-12 20:51:58,548 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1223 transitions. Word has length 113 [2020-10-12 20:51:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:58,549 INFO L479 AbstractCegarLoop]: Abstraction has 762 states and 1223 transitions. [2020-10-12 20:51:58,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:51:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1223 transitions. [2020-10-12 20:51:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:51:58,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:58,551 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 20:51:58,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:51:58,551 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:58,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:58,551 INFO L82 PathProgramCache]: Analyzing trace with hash 734458679, now seen corresponding path program 1 times [2020-10-12 20:51:58,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:58,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867407618] [2020-10-12 20:51:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:03,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:03,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:52:03,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-12 20:52:03,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:52:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 20:52:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:04,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:04,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:04,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:04,077 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 20:52:04,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867407618] [2020-10-12 20:52:04,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:04,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:52:04,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840229672] [2020-10-12 20:52:04,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:52:04,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:04,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:52:04,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:52:04,079 INFO L87 Difference]: Start difference. First operand 762 states and 1223 transitions. Second operand 10 states. [2020-10-12 20:52:06,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:06,574 INFO L93 Difference]: Finished difference Result 1350 states and 2157 transitions. [2020-10-12 20:52:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:52:06,575 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 20:52:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:06,579 INFO L225 Difference]: With dead ends: 1350 [2020-10-12 20:52:06,579 INFO L226 Difference]: Without dead ends: 857 [2020-10-12 20:52:06,580 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 20:52:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-12 20:52:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 762. [2020-10-12 20:52:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2020-10-12 20:52:06,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1223 transitions. [2020-10-12 20:52:06,603 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1223 transitions. Word has length 114 [2020-10-12 20:52:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:06,603 INFO L479 AbstractCegarLoop]: Abstraction has 762 states and 1223 transitions. [2020-10-12 20:52:06,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:52:06,604 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1223 transitions. [2020-10-12 20:52:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:52:06,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:06,605 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 20:52:06,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:52:06,606 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:06,606 INFO L82 PathProgramCache]: Analyzing trace with hash -88332800, now seen corresponding path program 1 times [2020-10-12 20:52:06,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:06,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810081067] [2020-10-12 20:52:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:06,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:11,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:11,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:52:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:52:11,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:52:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 20:52:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:12,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:12,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:12,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:12,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:12,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:12,178 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 20:52:12,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810081067] [2020-10-12 20:52:12,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:12,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:52:12,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124158837] [2020-10-12 20:52:12,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:52:12,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:12,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:52:12,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:52:12,180 INFO L87 Difference]: Start difference. First operand 762 states and 1223 transitions. Second operand 11 states. [2020-10-12 20:52:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:14,388 INFO L93 Difference]: Finished difference Result 1722 states and 2765 transitions. [2020-10-12 20:52:14,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:52:14,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2020-10-12 20:52:14,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:14,394 INFO L225 Difference]: With dead ends: 1722 [2020-10-12 20:52:14,394 INFO L226 Difference]: Without dead ends: 976 [2020-10-12 20:52:14,396 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 20:52:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-10-12 20:52:14,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 961. [2020-10-12 20:52:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-10-12 20:52:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1546 transitions. [2020-10-12 20:52:14,427 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1546 transitions. Word has length 114 [2020-10-12 20:52:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:14,427 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1546 transitions. [2020-10-12 20:52:14,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:52:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1546 transitions. [2020-10-12 20:52:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:52:14,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:14,429 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:14,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:52:14,430 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:14,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:14,430 INFO L82 PathProgramCache]: Analyzing trace with hash -102125258, now seen corresponding path program 1 times [2020-10-12 20:52:14,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:14,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201891429] [2020-10-12 20:52:14,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:14,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:19,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:19,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:52:19,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:19,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:52:19,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:52:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:52:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:20,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:20,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:20,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:20,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:52:20,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:20,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:20,102 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 20:52:20,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201891429] [2020-10-12 20:52:20,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:20,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 20:52:20,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194568031] [2020-10-12 20:52:20,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:52:20,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:20,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:52:20,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:52:20,104 INFO L87 Difference]: Start difference. First operand 961 states and 1546 transitions. Second operand 12 states. [2020-10-12 20:52:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:22,518 INFO L93 Difference]: Finished difference Result 2424 states and 3887 transitions. [2020-10-12 20:52:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:52:22,525 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-10-12 20:52:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:22,533 INFO L225 Difference]: With dead ends: 2424 [2020-10-12 20:52:22,533 INFO L226 Difference]: Without dead ends: 1479 [2020-10-12 20:52:22,536 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 20:52:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2020-10-12 20:52:22,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1203. [2020-10-12 20:52:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-10-12 20:52:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1938 transitions. [2020-10-12 20:52:22,579 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1938 transitions. Word has length 115 [2020-10-12 20:52:22,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:22,580 INFO L479 AbstractCegarLoop]: Abstraction has 1203 states and 1938 transitions. [2020-10-12 20:52:22,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:52:22,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1938 transitions. [2020-10-12 20:52:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:52:22,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:22,591 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 20:52:22,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:52:22,592 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:22,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:22,593 INFO L82 PathProgramCache]: Analyzing trace with hash -236138764, now seen corresponding path program 1 times [2020-10-12 20:52:22,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:22,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745451478] [2020-10-12 20:52:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:23,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:27,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:27,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:52:27,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:27,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4906 [2020-10-12 20:52:27,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:52:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:52:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:28,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:28,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:28,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:28,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:28,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:28,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:28,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:28,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:28,141 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 20:52:28,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745451478] [2020-10-12 20:52:28,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:28,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:52:28,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143799031] [2020-10-12 20:52:28,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:52:28,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:28,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:52:28,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:52:28,143 INFO L87 Difference]: Start difference. First operand 1203 states and 1938 transitions. Second operand 11 states. [2020-10-12 20:52:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:31,921 INFO L93 Difference]: Finished difference Result 2067 states and 3295 transitions. [2020-10-12 20:52:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:52:31,922 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 115 [2020-10-12 20:52:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:31,929 INFO L225 Difference]: With dead ends: 2067 [2020-10-12 20:52:31,929 INFO L226 Difference]: Without dead ends: 1572 [2020-10-12 20:52:31,930 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 20:52:31,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2020-10-12 20:52:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1202. [2020-10-12 20:52:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-10-12 20:52:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1937 transitions. [2020-10-12 20:52:31,971 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1937 transitions. Word has length 115 [2020-10-12 20:52:31,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:31,971 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1937 transitions. [2020-10-12 20:52:31,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:52:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1937 transitions. [2020-10-12 20:52:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:31,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:31,974 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 20:52:31,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:52:31,974 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:31,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:31,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1915827259, now seen corresponding path program 1 times [2020-10-12 20:52:31,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:31,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776403666] [2020-10-12 20:52:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:32,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:32,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:34,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:34,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:34,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:34,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2103 [2020-10-12 20:52:34,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 20:52:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:52:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:34,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:34,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:34,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:34,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:34,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:34,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:34,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:34,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:34,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:34,185 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 20:52:34,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776403666] [2020-10-12 20:52:34,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:34,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:34,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162282467] [2020-10-12 20:52:34,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:34,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:34,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:34,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:34,187 INFO L87 Difference]: Start difference. First operand 1202 states and 1937 transitions. Second operand 5 states. [2020-10-12 20:52:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:35,009 INFO L93 Difference]: Finished difference Result 2326 states and 3712 transitions. [2020-10-12 20:52:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:35,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:52:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:35,014 INFO L225 Difference]: With dead ends: 2326 [2020-10-12 20:52:35,015 INFO L226 Difference]: Without dead ends: 1356 [2020-10-12 20:52:35,018 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 20:52:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2020-10-12 20:52:35,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1222. [2020-10-12 20:52:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2020-10-12 20:52:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1973 transitions. [2020-10-12 20:52:35,056 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1973 transitions. Word has length 116 [2020-10-12 20:52:35,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:35,057 INFO L479 AbstractCegarLoop]: Abstraction has 1222 states and 1973 transitions. [2020-10-12 20:52:35,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:35,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1973 transitions. [2020-10-12 20:52:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:35,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:35,059 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 20:52:35,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:52:35,060 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:35,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:35,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1124398531, now seen corresponding path program 1 times [2020-10-12 20:52:35,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:35,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025761128] [2020-10-12 20:52:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:35,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:40,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:40,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:40,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:40,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 20:52:40,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:40,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:52:40,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:40,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:52:40,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:40,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:40,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:40,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:40,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:40,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:40,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:40,384 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 20:52:40,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025761128] [2020-10-12 20:52:40,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:40,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:52:40,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558101500] [2020-10-12 20:52:40,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:52:40,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:40,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:52:40,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:52:40,388 INFO L87 Difference]: Start difference. First operand 1222 states and 1973 transitions. Second operand 9 states. [2020-10-12 20:52:42,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:42,747 INFO L93 Difference]: Finished difference Result 2874 states and 4613 transitions. [2020-10-12 20:52:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:52:42,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-10-12 20:52:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:42,756 INFO L225 Difference]: With dead ends: 2874 [2020-10-12 20:52:42,756 INFO L226 Difference]: Without dead ends: 1668 [2020-10-12 20:52:42,763 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 20:52:42,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-10-12 20:52:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1274. [2020-10-12 20:52:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2020-10-12 20:52:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2063 transitions. [2020-10-12 20:52:42,805 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2063 transitions. Word has length 116 [2020-10-12 20:52:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:42,806 INFO L479 AbstractCegarLoop]: Abstraction has 1274 states and 2063 transitions. [2020-10-12 20:52:42,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:52:42,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2063 transitions. [2020-10-12 20:52:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:42,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:42,808 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 20:52:42,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:52:42,809 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:42,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1264947141, now seen corresponding path program 1 times [2020-10-12 20:52:42,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:42,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095897980] [2020-10-12 20:52:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:42,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:47,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:47,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:47,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:52:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 20:52:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:52:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:52:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:52:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:48,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:48,329 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 20:52:48,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095897980] [2020-10-12 20:52:48,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:52:48,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:52:48,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967457799] [2020-10-12 20:52:48,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:52:48,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:48,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:52:48,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:52:48,330 INFO L87 Difference]: Start difference. First operand 1274 states and 2063 transitions. Second operand 11 states. [2020-10-12 20:52:53,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:53,118 INFO L93 Difference]: Finished difference Result 2387 states and 3799 transitions. [2020-10-12 20:52:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:52:53,119 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-10-12 20:52:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:53,125 INFO L225 Difference]: With dead ends: 2387 [2020-10-12 20:52:53,126 INFO L226 Difference]: Without dead ends: 1857 [2020-10-12 20:52:53,127 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 20:52:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-10-12 20:52:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1278. [2020-10-12 20:52:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-10-12 20:52:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 2069 transitions. [2020-10-12 20:52:53,169 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 2069 transitions. Word has length 116 [2020-10-12 20:52:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:53,169 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 2069 transitions. [2020-10-12 20:52:53,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:52:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 2069 transitions. [2020-10-12 20:52:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:52:53,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:53,172 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 20:52:53,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:52:53,172 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:53,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1230327210, now seen corresponding path program 1 times [2020-10-12 20:52:53,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:53,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417445937] [2020-10-12 20:52:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:52:53,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 20:52:53,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:52:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:52:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:52:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:53,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:53,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:53,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:53,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:53,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:53,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:53,509 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 20:52:53,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417445937] [2020-10-12 20:52:53,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:53,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:52:53,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132021412] [2020-10-12 20:52:53,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:52:53,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:53,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:52:53,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:52:53,510 INFO L87 Difference]: Start difference. First operand 1278 states and 2069 transitions. Second operand 4 states. [2020-10-12 20:52:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:54,024 INFO L93 Difference]: Finished difference Result 3800 states and 6166 transitions. [2020-10-12 20:52:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:52:54,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-12 20:52:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:54,053 INFO L225 Difference]: With dead ends: 3800 [2020-10-12 20:52:54,054 INFO L226 Difference]: Without dead ends: 2538 [2020-10-12 20:52:54,060 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 20:52:54,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2020-10-12 20:52:54,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2538. [2020-10-12 20:52:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2538 states. [2020-10-12 20:52:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 4102 transitions. [2020-10-12 20:52:54,156 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 4102 transitions. Word has length 116 [2020-10-12 20:52:54,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:54,157 INFO L479 AbstractCegarLoop]: Abstraction has 2538 states and 4102 transitions. [2020-10-12 20:52:54,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:52:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 4102 transitions. [2020-10-12 20:52:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 20:52:54,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:54,160 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 20:52:54,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:52:54,161 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:54,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:54,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1680110311, now seen corresponding path program 1 times [2020-10-12 20:52:54,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:54,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576495352] [2020-10-12 20:52:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 20:52:54,236 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 20:52:54,236 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 20:52:54,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:52:54,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:52:54 BoogieIcfgContainer [2020-10-12 20:52:54,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 20:52:54,275 INFO L168 Benchmark]: Toolchain (without parser) took 129340.94 ms. Allocated memory was 141.6 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 102.3 MB in the beginning and 868.5 MB in the end (delta: -766.3 MB). Peak memory consumption was 674.0 MB. Max. memory is 7.1 GB. [2020-10-12 20:52:54,275 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 20:52:54,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 888.83 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 102.1 MB in the beginning and 165.4 MB in the end (delta: -63.3 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-10-12 20:52:54,276 INFO L168 Benchmark]: Boogie Preprocessor took 171.13 ms. Allocated memory is still 203.9 MB. Free memory was 165.4 MB in the beginning and 157.9 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 7.1 GB. [2020-10-12 20:52:54,277 INFO L168 Benchmark]: RCFGBuilder took 1224.06 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 157.9 MB in the beginning and 180.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2020-10-12 20:52:54,277 INFO L168 Benchmark]: TraceAbstraction took 127048.36 ms. Allocated memory was 237.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 178.6 MB in the beginning and 868.5 MB in the end (delta: -689.9 MB). Peak memory consumption was 654.4 MB. Max. memory is 7.1 GB. [2020-10-12 20:52:54,279 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 888.83 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 102.1 MB in the beginning and 165.4 MB in the end (delta: -63.3 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.13 ms. Allocated memory is still 203.9 MB. Free memory was 165.4 MB in the beginning and 157.9 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1224.06 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 157.9 MB in the beginning and 180.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 127048.36 ms. Allocated memory was 237.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 178.6 MB in the beginning and 868.5 MB in the end (delta: -689.9 MB). Peak memory consumption was 654.4 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 1332. Possible FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_client_data ; [L1065] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1069] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1070] s->ctx = malloc(sizeof(SSL_CTX)) [L1071] s->session = malloc(sizeof(SSL_SESSION)) [L1072] s->state = 12292 [L1073] s->version = __VERIFIER_nondet_int() [L1074] CALL ssl3_connect(s) [L1080] BUF_MEM *buf ; [L1081] unsigned long tmp ; [L1082] unsigned long l ; [L1083] long num1 ; [L1084] void (*cb)() ; [L1085] int ret ; [L1086] int new_state ; [L1087] int state ; [L1088] int skip ; [L1089] int tmp___1 = __VERIFIER_nondet_int() ; [L1090] int tmp___2 = __VERIFIER_nondet_int() ; [L1091] int tmp___3 = __VERIFIER_nondet_int() ; [L1092] int tmp___4 = __VERIFIER_nondet_int() ; [L1093] int tmp___5 = __VERIFIER_nondet_int() ; [L1094] int tmp___6 = __VERIFIER_nondet_int() ; [L1095] int tmp___7 = __VERIFIER_nondet_int() ; [L1096] int tmp___8 = __VERIFIER_nondet_int() ; [L1097] long tmp___9 = __VERIFIER_nondet_long() ; [L1098] int blastFlag ; [L1101] blastFlag = 0 [L1102] s->hit=__VERIFIER_nondet_int () [L1103] s->state = 12292 [L1104] tmp = __VERIFIER_nondet_int() [L1105] cb = (void (*)())((void *)0) [L1106] ret = -1 [L1107] skip = 0 [L1108] EXPR s->info_callback [L1108] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1109] EXPR s->info_callback [L1109] cb = s->info_callback [L1117] EXPR s->in_handshake [L1117] s->in_handshake += 1 [L1118] COND FALSE !(tmp___1 & 12288) [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND TRUE s->state == 12292 [L1234] s->new_session = 1 [L1235] s->state = 4096 [L1236] EXPR s->ctx [L1236] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1236] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1241] s->server = 0 [L1242] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) [L1247] EXPR s->version [L1247] COND FALSE !((s->version & 65280) != 768) [L1253] s->type = 4096 [L1254] EXPR s->init_buf [L1254] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1272] COND FALSE !(! tmp___4) [L1278] COND FALSE !(! tmp___5) [L1284] s->state = 4368 [L1285] EXPR s->ctx [L1285] EXPR (s->ctx)->stats.sess_connect [L1285] (s->ctx)->stats.sess_connect += 1 [L1286] s->init_num = 0 [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND TRUE s->state == 4368 [L1290] s->shutdown = 0 [L1291] ret = __VERIFIER_nondet_int() [L1292] COND TRUE blastFlag == 0 [L1293] blastFlag = 1 [L1297] COND FALSE !(ret <= 0) [L1302] s->state = 4384 [L1303] s->init_num = 0 [L1304] EXPR s->bbio [L1304] EXPR s->wbio [L1304] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND TRUE s->state == 4384 [L1312] ret = __VERIFIER_nondet_int() [L1313] COND TRUE blastFlag == 1 [L1314] blastFlag = 2 [L1318] COND FALSE !(ret <= 0) [L1323] s->hit [L1323] COND FALSE !(s->hit) [L1326] s->state = 4400 [L1328] s->init_num = 0 [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND FALSE !(s->state == 4384) [L1155] EXPR s->state [L1155] COND FALSE !(s->state == 4385) [L1158] EXPR s->state [L1158] COND TRUE s->state == 4400 [L1332] EXPR s->s3 [L1332] EXPR (s->s3)->tmp.new_cipher [L1332] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1332] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1335] ret = __VERIFIER_nondet_int() [L1336] COND TRUE blastFlag == 2 [L1337] blastFlag = 3 [L1345] COND FALSE !(ret <= 0) [L1351] s->state = 4416 [L1352] s->init_num = 0 [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND FALSE !(s->state == 4384) [L1155] EXPR s->state [L1155] COND FALSE !(s->state == 4385) [L1158] EXPR s->state [L1158] COND FALSE !(s->state == 4400) [L1161] EXPR s->state [L1161] COND FALSE !(s->state == 4401) [L1164] EXPR s->state [L1164] COND TRUE s->state == 4416 [L1356] ret = __VERIFIER_nondet_int() [L1357] COND TRUE blastFlag == 3 [L1358] blastFlag = 4 [L1362] COND FALSE !(ret <= 0) [L1367] s->state = 4432 [L1368] s->init_num = 0 [L1369] COND FALSE !(! tmp___6) [L1600] EXPR s->s3 [L1600] EXPR (s->s3)->tmp.reuse_message [L1600] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1629] skip = 0 [L1128] COND TRUE 1 [L1130] EXPR s->state [L1130] state = s->state [L1131] EXPR s->state [L1131] COND FALSE !(s->state == 12292) [L1134] EXPR s->state [L1134] COND FALSE !(s->state == 16384) [L1137] EXPR s->state [L1137] COND FALSE !(s->state == 4096) [L1140] EXPR s->state [L1140] COND FALSE !(s->state == 20480) [L1143] EXPR s->state [L1143] COND FALSE !(s->state == 4099) [L1146] EXPR s->state [L1146] COND FALSE !(s->state == 4368) [L1149] EXPR s->state [L1149] COND FALSE !(s->state == 4369) [L1152] EXPR s->state [L1152] COND FALSE !(s->state == 4384) [L1155] EXPR s->state [L1155] COND FALSE !(s->state == 4385) [L1158] EXPR s->state [L1158] COND FALSE !(s->state == 4400) [L1161] EXPR s->state [L1161] COND FALSE !(s->state == 4401) [L1164] EXPR s->state [L1164] COND FALSE !(s->state == 4416) [L1167] EXPR s->state [L1167] COND FALSE !(s->state == 4417) [L1170] EXPR s->state [L1170] COND TRUE s->state == 4432 [L1378] ret = __VERIFIER_nondet_int() [L1379] COND TRUE blastFlag == 4 [L1641] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 126.9s, OverallIterations: 32, TraceHistogramMax: 6, AutomataDifference: 42.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5853 SDtfs, 5120 SDslu, 14065 SDs, 0 SdLazy, 21063 SolverSat, 857 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 370 GetRequests, 114 SyntacticMatches, 58 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 4.7s 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, 4223 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 81.6s 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...