/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.01.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:49:32,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:49:32,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:49:32,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:49:32,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:49:32,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:49:32,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:49:32,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:49:32,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:49:32,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:49:32,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:49:32,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:49:32,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:49:32,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:49:32,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:49:32,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:49:32,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:49:32,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:49:32,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:49:32,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:49:32,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:49:32,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:49:32,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:49:32,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:49:32,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:49:32,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:49:32,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:49:32,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:49:32,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:49:32,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:49:32,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:49:32,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:49:32,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:49:32,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:49:32,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:49:32,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:49:32,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:49:32,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:49:32,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:49:32,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:49:32,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:49:32,815 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 20:49:32,863 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:49:32,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:49:32,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:49:32,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:49:32,867 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:49:32,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:49:32,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:49:32,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:49:32,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:49:32,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:49:32,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:49:32,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:49:32,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:49:32,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:49:32,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:49:32,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:49:32,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:49:32,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:49:32,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:49:32,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:49:32,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:49:32,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:49:32,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:49:32,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:49:32,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:49:32,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:49:32,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:49:32,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:49:32,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:49:32,875 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 20:49:33,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:49:33,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:49:33,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:49:33,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:49:33,242 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:49:33,243 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_clnt.blast.01.i.cil-1.c [2020-10-12 20:49:33,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf0b4de17/a1d4a8936a224bcca0b6f423c8ce794d/FLAG75f5f8a6e [2020-10-12 20:49:33,955 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:49:33,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_clnt.blast.01.i.cil-1.c [2020-10-12 20:49:33,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf0b4de17/a1d4a8936a224bcca0b6f423c8ce794d/FLAG75f5f8a6e [2020-10-12 20:49:34,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf0b4de17/a1d4a8936a224bcca0b6f423c8ce794d [2020-10-12 20:49:34,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:49:34,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:49:34,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:49:34,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:49:34,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:49:34,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:49:34" (1/1) ... [2020-10-12 20:49:34,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0ba802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:34, skipping insertion in model container [2020-10-12 20:49:34,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:49:34" (1/1) ... [2020-10-12 20:49:34,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:49:34,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:49:34,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:49:34,903 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:49:35,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:49:35,130 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:49:35,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:35 WrapperNode [2020-10-12 20:49:35,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:49:35,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:49:35,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:49:35,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:49:35,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:35" (1/1) ... [2020-10-12 20:49:35,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:35" (1/1) ... [2020-10-12 20:49:35,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:35" (1/1) ... [2020-10-12 20:49:35,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:35" (1/1) ... [2020-10-12 20:49:35,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:35" (1/1) ... [2020-10-12 20:49:35,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:35" (1/1) ... [2020-10-12 20:49:35,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:35" (1/1) ... [2020-10-12 20:49:35,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:49:35,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:49:35,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:49:35,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:49:35,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:49:35,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:49:35,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:49:35,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2020-10-12 20:49:35,399 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2020-10-12 20:49:35,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:49:35,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-12 20:49:35,399 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:49:35,400 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:49:35,400 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:49:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:49:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:49:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:49:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:49:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:49:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:49:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:49:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2020-10-12 20:49:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:49:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-12 20:49:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2020-10-12 20:49:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:49:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:49:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:49:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:49:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:49:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:49:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:49:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:49:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:49:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:49:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:49:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:49:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:49:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:49:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:49:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:49:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:49:35,856 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:49:36,485 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-12 20:49:36,485 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-12 20:49:36,515 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:49:36,515 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:49:36,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:49:36 BoogieIcfgContainer [2020-10-12 20:49:36,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:49:36,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:49:36,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:49:36,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:49:36,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:49:34" (1/3) ... [2020-10-12 20:49:36,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5474e851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:49:36, skipping insertion in model container [2020-10-12 20:49:36,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:49:35" (2/3) ... [2020-10-12 20:49:36,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5474e851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:49:36, skipping insertion in model container [2020-10-12 20:49:36,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:49:36" (3/3) ... [2020-10-12 20:49:36,530 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.01.i.cil-1.c [2020-10-12 20:49:36,540 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:49:36,550 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:49:36,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:49:36,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:49:36,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:49:36,589 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:49:36,589 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:49:36,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:49:36,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:49:36,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:49:36,589 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:49:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states. [2020-10-12 20:49:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 20:49:36,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:49:36,624 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 20:49:36,624 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:49:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:49:36,632 INFO L82 PathProgramCache]: Analyzing trace with hash 735003307, now seen corresponding path program 1 times [2020-10-12 20:49:36,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:49:36,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340548240] [2020-10-12 20:49:36,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:49:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:37,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:37,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:37,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:37,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 20:49:37,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:49:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-10-12 20:49:37,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:49:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:49:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 20:49:37,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:49:38,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:49:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:38,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:38,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:49:38,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:49:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:49:38,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:49:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:49:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:49:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:38,028 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 20:49:38,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340548240] [2020-10-12 20:49:38,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:49:38,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:49:38,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629522220] [2020-10-12 20:49:38,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:49:38,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:49:38,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:49:38,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:49:38,057 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 5 states. [2020-10-12 20:49:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:49:38,842 INFO L93 Difference]: Finished difference Result 271 states and 444 transitions. [2020-10-12 20:49:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:49:38,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-12 20:49:38,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:49:38,857 INFO L225 Difference]: With dead ends: 271 [2020-10-12 20:49:38,858 INFO L226 Difference]: Without dead ends: 124 [2020-10-12 20:49:38,862 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 20:49:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-12 20:49:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-12 20:49:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-12 20:49:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 180 transitions. [2020-10-12 20:49:38,915 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 180 transitions. Word has length 30 [2020-10-12 20:49:38,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:49:38,915 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 180 transitions. [2020-10-12 20:49:38,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:49:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 180 transitions. [2020-10-12 20:49:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 20:49:38,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:49:38,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:49:38,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:49:38,918 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:49:38,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:49:38,919 INFO L82 PathProgramCache]: Analyzing trace with hash 110518561, now seen corresponding path program 1 times [2020-10-12 20:49:38,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:49:38,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242796579] [2020-10-12 20:49:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:49:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:38,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:40,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:41,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:41,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 20:49:41,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:49:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2748 [2020-10-12 20:49:41,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 20:49:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:49:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:49:41,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:49:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:41,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:41,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:41,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:49:41,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:49:41,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:49:41,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:41,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:49:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:49:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:49:41,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:41,900 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 20:49:41,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242796579] [2020-10-12 20:49:41,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:49:41,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:49:41,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051707609] [2020-10-12 20:49:41,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:49:41,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:49:41,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:49:41,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:49:41,905 INFO L87 Difference]: Start difference. First operand 123 states and 180 transitions. Second operand 9 states. [2020-10-12 20:49:43,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:49:43,507 INFO L93 Difference]: Finished difference Result 359 states and 533 transitions. [2020-10-12 20:49:43,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:49:43,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-12 20:49:43,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:49:43,511 INFO L225 Difference]: With dead ends: 359 [2020-10-12 20:49:43,511 INFO L226 Difference]: Without dead ends: 252 [2020-10-12 20:49:43,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:49:43,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-12 20:49:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 231. [2020-10-12 20:49:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-12 20:49:43,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 349 transitions. [2020-10-12 20:49:43,536 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 349 transitions. Word has length 45 [2020-10-12 20:49:43,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:49:43,536 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 349 transitions. [2020-10-12 20:49:43,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:49:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 349 transitions. [2020-10-12 20:49:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 20:49:43,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:49:43,539 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:49:43,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:49:43,539 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:49:43,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:49:43,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1117876010, now seen corresponding path program 1 times [2020-10-12 20:49:43,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:49:43,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896771692] [2020-10-12 20:49:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:49:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:43,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:44,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:44,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 20:49:44,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:49:44,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-10-12 20:49:44,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:49:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 20:49:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:49:44,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:44,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:49:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:44,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:44,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:49:44,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:49:44,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:49:44,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:44,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:49:44,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:49:44,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:49:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:44,576 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 20:49:44,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896771692] [2020-10-12 20:49:44,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:49:44,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:49:44,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075373180] [2020-10-12 20:49:44,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:49:44,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:49:44,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:49:44,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:49:44,579 INFO L87 Difference]: Start difference. First operand 231 states and 349 transitions. Second operand 5 states. [2020-10-12 20:49:45,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:49:45,322 INFO L93 Difference]: Finished difference Result 626 states and 957 transitions. [2020-10-12 20:49:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:49:45,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-12 20:49:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:49:45,327 INFO L225 Difference]: With dead ends: 626 [2020-10-12 20:49:45,327 INFO L226 Difference]: Without dead ends: 411 [2020-10-12 20:49:45,329 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 20:49:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-12 20:49:45,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 279. [2020-10-12 20:49:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-12 20:49:45,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 433 transitions. [2020-10-12 20:49:45,353 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 433 transitions. Word has length 60 [2020-10-12 20:49:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:49:45,354 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 433 transitions. [2020-10-12 20:49:45,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:49:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 433 transitions. [2020-10-12 20:49:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 20:49:45,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:49:45,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:49:45,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:49:45,357 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:49:45,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:49:45,358 INFO L82 PathProgramCache]: Analyzing trace with hash 290000045, now seen corresponding path program 1 times [2020-10-12 20:49:45,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:49:45,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454948916] [2020-10-12 20:49:45,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:49:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:46,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:46,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 20:49:46,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:49:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-12 20:49:46,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:49:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 20:49:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:49:46,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:49:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:46,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:46,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:49:46,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:49:46,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:49:46,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:49:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:49:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:49:46,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:46,318 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 20:49:46,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454948916] [2020-10-12 20:49:46,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:49:46,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:49:46,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671473723] [2020-10-12 20:49:46,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:49:46,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:49:46,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:49:46,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:49:46,321 INFO L87 Difference]: Start difference. First operand 279 states and 433 transitions. Second operand 5 states. [2020-10-12 20:49:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:49:47,014 INFO L93 Difference]: Finished difference Result 564 states and 868 transitions. [2020-10-12 20:49:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:49:47,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-12 20:49:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:49:47,017 INFO L225 Difference]: With dead ends: 564 [2020-10-12 20:49:47,017 INFO L226 Difference]: Without dead ends: 301 [2020-10-12 20:49:47,018 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 20:49:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-12 20:49:47,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 267. [2020-10-12 20:49:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-12 20:49:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 409 transitions. [2020-10-12 20:49:47,033 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 409 transitions. Word has length 61 [2020-10-12 20:49:47,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:49:47,034 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 409 transitions. [2020-10-12 20:49:47,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:49:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 409 transitions. [2020-10-12 20:49:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:49:47,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:49:47,037 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 20:49:47,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:49:47,037 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:49:47,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:49:47,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1128890017, now seen corresponding path program 1 times [2020-10-12 20:49:47,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:49:47,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713281898] [2020-10-12 20:49:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:49:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:47,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:47,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:49:47,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:49:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 816 [2020-10-12 20:49:47,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:49:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:49:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:49:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:47,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:49:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:47,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:47,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:47,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:49:47,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:49:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:49:47,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:49:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:49:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:49:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:49:48,015 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 20:49:48,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713281898] [2020-10-12 20:49:48,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:49:48,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:49:48,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304606231] [2020-10-12 20:49:48,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:49:48,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:49:48,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:49:48,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:49:48,022 INFO L87 Difference]: Start difference. First operand 267 states and 409 transitions. Second operand 5 states. [2020-10-12 20:49:49,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:49:49,033 INFO L93 Difference]: Finished difference Result 700 states and 1079 transitions. [2020-10-12 20:49:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:49:49,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:49:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:49:49,039 INFO L225 Difference]: With dead ends: 700 [2020-10-12 20:49:49,039 INFO L226 Difference]: Without dead ends: 449 [2020-10-12 20:49:49,040 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 20:49:49,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-12 20:49:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 317. [2020-10-12 20:49:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-12 20:49:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 495 transitions. [2020-10-12 20:49:49,060 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 495 transitions. Word has length 78 [2020-10-12 20:49:49,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:49:49,061 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 495 transitions. [2020-10-12 20:49:49,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:49:49,061 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 495 transitions. [2020-10-12 20:49:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:49:49,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:49:49,063 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 20:49:49,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:49:49,063 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:49:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:49:49,064 INFO L82 PathProgramCache]: Analyzing trace with hash 994876511, now seen corresponding path program 1 times [2020-10-12 20:49:49,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:49:49,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727800737] [2020-10-12 20:49:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:49:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:49,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:50,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:50,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:49:50,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:49:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-12 20:49:50,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:49:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:49:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:49:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:50,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:49:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:50,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:50,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:50,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:49:50,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:49:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:49:50,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:49:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:49:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:49:50,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:49:50,744 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 20:49:50,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727800737] [2020-10-12 20:49:50,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:49:50,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:49:50,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424494104] [2020-10-12 20:49:50,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:49:50,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:49:50,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:49:50,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:49:50,747 INFO L87 Difference]: Start difference. First operand 317 states and 495 transitions. Second operand 5 states. [2020-10-12 20:49:51,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:49:51,798 INFO L93 Difference]: Finished difference Result 798 states and 1249 transitions. [2020-10-12 20:49:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:49:51,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:49:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:49:51,802 INFO L225 Difference]: With dead ends: 798 [2020-10-12 20:49:51,803 INFO L226 Difference]: Without dead ends: 497 [2020-10-12 20:49:51,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:49:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-12 20:49:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 315. [2020-10-12 20:49:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-12 20:49:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 493 transitions. [2020-10-12 20:49:51,818 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 493 transitions. Word has length 78 [2020-10-12 20:49:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:49:51,819 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 493 transitions. [2020-10-12 20:49:51,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:49:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 493 transitions. [2020-10-12 20:49:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:49:51,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:49:51,820 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:49:51,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:49:51,821 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:49:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:49:51,821 INFO L82 PathProgramCache]: Analyzing trace with hash 631434262, now seen corresponding path program 1 times [2020-10-12 20:49:51,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:49:51,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671024782] [2020-10-12 20:49:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:49:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:51,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:52,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:52,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:49:52,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:49:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-12 20:49:52,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:49:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:49:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:49:52,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:52,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:49:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:52,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:52,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:49:52,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:49:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:49:52,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:49:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:49:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:49:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:49:52,680 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 20:49:52,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671024782] [2020-10-12 20:49:52,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:49:52,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:49:52,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406308853] [2020-10-12 20:49:52,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:49:52,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:49:52,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:49:52,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:49:52,683 INFO L87 Difference]: Start difference. First operand 315 states and 493 transitions. Second operand 5 states. [2020-10-12 20:49:53,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:49:53,682 INFO L93 Difference]: Finished difference Result 788 states and 1236 transitions. [2020-10-12 20:49:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:49:53,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:49:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:49:53,686 INFO L225 Difference]: With dead ends: 788 [2020-10-12 20:49:53,686 INFO L226 Difference]: Without dead ends: 489 [2020-10-12 20:49:53,687 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 20:49:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-12 20:49:53,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 367. [2020-10-12 20:49:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-12 20:49:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 581 transitions. [2020-10-12 20:49:53,702 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 581 transitions. Word has length 79 [2020-10-12 20:49:53,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:49:53,703 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 581 transitions. [2020-10-12 20:49:53,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:49:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 581 transitions. [2020-10-12 20:49:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:49:53,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:49:53,705 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:49:53,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:49:53,705 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:49:53,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:49:53,705 INFO L82 PathProgramCache]: Analyzing trace with hash 771982872, now seen corresponding path program 1 times [2020-10-12 20:49:53,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:49:53,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527940619] [2020-10-12 20:49:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:49:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:53,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:55,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:55,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:49:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:49:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1593 [2020-10-12 20:49:55,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:49:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:49:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:49:55,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:49:55,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:49:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:55,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:49:55,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:49:55,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:49:55,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:49:55,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:49:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:49:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:49:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:49:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:49:55,454 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 20:49:55,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527940619] [2020-10-12 20:49:55,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:49:55,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:49:55,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339895422] [2020-10-12 20:49:55,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:49:55,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:49:55,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:49:55,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:49:55,458 INFO L87 Difference]: Start difference. First operand 367 states and 581 transitions. Second operand 5 states. [2020-10-12 20:49:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:49:56,353 INFO L93 Difference]: Finished difference Result 754 states and 1186 transitions. [2020-10-12 20:49:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:49:56,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:49:56,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:49:56,356 INFO L225 Difference]: With dead ends: 754 [2020-10-12 20:49:56,357 INFO L226 Difference]: Without dead ends: 403 [2020-10-12 20:49:56,358 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 20:49:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-12 20:49:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 359. [2020-10-12 20:49:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-12 20:49:56,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 565 transitions. [2020-10-12 20:49:56,372 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 565 transitions. Word has length 79 [2020-10-12 20:49:56,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:49:56,372 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 565 transitions. [2020-10-12 20:49:56,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:49:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 565 transitions. [2020-10-12 20:49:56,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:49:56,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:49:56,374 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:49:56,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:49:56,374 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:49:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:49:56,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1789671542, now seen corresponding path program 1 times [2020-10-12 20:49:56,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:49:56,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821527976] [2020-10-12 20:49:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:49:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:49:56,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:57,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:49:57,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:00,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:00,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 20:50:00,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:50:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3843 [2020-10-12 20:50:00,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:00,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:50:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:50:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:00,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:00,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:00,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:00,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:00,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:00,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:50:00,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:00,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821527976] [2020-10-12 20:50:00,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:00,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:00,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084146588] [2020-10-12 20:50:00,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:00,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:00,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:00,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:00,363 INFO L87 Difference]: Start difference. First operand 359 states and 565 transitions. Second operand 5 states. [2020-10-12 20:50:01,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:01,235 INFO L93 Difference]: Finished difference Result 824 states and 1290 transitions. [2020-10-12 20:50:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:01,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-12 20:50:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:01,238 INFO L225 Difference]: With dead ends: 824 [2020-10-12 20:50:01,239 INFO L226 Difference]: Without dead ends: 481 [2020-10-12 20:50:01,240 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 20:50:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-12 20:50:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 359. [2020-10-12 20:50:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-12 20:50:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 563 transitions. [2020-10-12 20:50:01,256 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 563 transitions. Word has length 96 [2020-10-12 20:50:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:01,256 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 563 transitions. [2020-10-12 20:50:01,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 563 transitions. [2020-10-12 20:50:01,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:50:01,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:01,258 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:01,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:50:01,258 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:01,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:01,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1541525048, now seen corresponding path program 1 times [2020-10-12 20:50:01,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:01,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605145347] [2020-10-12 20:50:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:01,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:01,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:02,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:02,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 20:50:02,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1461 [2020-10-12 20:50:02,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:50:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-12 20:50:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:50:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:02,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:02,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:02,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:02,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:02,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:02,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:02,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:02,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:02,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:02,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 20:50:02,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605145347] [2020-10-12 20:50:02,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:02,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:02,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076449721] [2020-10-12 20:50:02,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:02,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:02,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:02,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:02,859 INFO L87 Difference]: Start difference. First operand 359 states and 563 transitions. Second operand 5 states. [2020-10-12 20:50:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:03,843 INFO L93 Difference]: Finished difference Result 882 states and 1385 transitions. [2020-10-12 20:50:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:03,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-12 20:50:03,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:03,848 INFO L225 Difference]: With dead ends: 882 [2020-10-12 20:50:03,848 INFO L226 Difference]: Without dead ends: 539 [2020-10-12 20:50:03,849 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 20:50:03,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-10-12 20:50:03,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 407. [2020-10-12 20:50:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-12 20:50:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 647 transitions. [2020-10-12 20:50:03,865 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 647 transitions. Word has length 96 [2020-10-12 20:50:03,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:03,866 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 647 transitions. [2020-10-12 20:50:03,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 647 transitions. [2020-10-12 20:50:03,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 20:50:03,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:03,867 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:03,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:50:03,868 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:03,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:03,868 INFO L82 PathProgramCache]: Analyzing trace with hash -547054129, now seen corresponding path program 1 times [2020-10-12 20:50:03,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:03,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266578321] [2020-10-12 20:50:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:04,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 20:50:05,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-10-12 20:50:05,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:50:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-12 20:50:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:50:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:05,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:05,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:05,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:05,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:05,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:05,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 20:50:05,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266578321] [2020-10-12 20:50:05,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:05,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:05,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081929102] [2020-10-12 20:50:05,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:05,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:05,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:05,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:05,613 INFO L87 Difference]: Start difference. First operand 407 states and 647 transitions. Second operand 5 states. [2020-10-12 20:50:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:06,865 INFO L93 Difference]: Finished difference Result 922 states and 1458 transitions. [2020-10-12 20:50:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:06,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-12 20:50:06,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:06,872 INFO L225 Difference]: With dead ends: 922 [2020-10-12 20:50:06,872 INFO L226 Difference]: Without dead ends: 531 [2020-10-12 20:50:06,875 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 20:50:06,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-10-12 20:50:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 399. [2020-10-12 20:50:06,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-12 20:50:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 633 transitions. [2020-10-12 20:50:06,904 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 633 transitions. Word has length 97 [2020-10-12 20:50:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:06,905 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 633 transitions. [2020-10-12 20:50:06,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 633 transitions. [2020-10-12 20:50:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 20:50:06,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:06,914 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:06,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:50:06,915 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:06,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:06,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1742238299, now seen corresponding path program 1 times [2020-10-12 20:50:06,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:06,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398718593] [2020-10-12 20:50:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:06,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:07,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:08,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:50:08,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-12 20:50:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:50:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:50:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:50:08,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:08,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:08,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:08,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:08,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:08,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:50:08,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:08,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:08,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:08,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398718593] [2020-10-12 20:50:08,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:08,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:08,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975787383] [2020-10-12 20:50:08,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:08,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:08,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:08,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:08,138 INFO L87 Difference]: Start difference. First operand 399 states and 633 transitions. Second operand 5 states. [2020-10-12 20:50:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:09,037 INFO L93 Difference]: Finished difference Result 914 states and 1442 transitions. [2020-10-12 20:50:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:09,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-12 20:50:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:09,040 INFO L225 Difference]: With dead ends: 914 [2020-10-12 20:50:09,041 INFO L226 Difference]: Without dead ends: 531 [2020-10-12 20:50:09,042 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 20:50:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-10-12 20:50:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 403. [2020-10-12 20:50:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-12 20:50:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 639 transitions. [2020-10-12 20:50:09,057 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 639 transitions. Word has length 99 [2020-10-12 20:50:09,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:09,057 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 639 transitions. [2020-10-12 20:50:09,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 639 transitions. [2020-10-12 20:50:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 20:50:09,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:09,059 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:09,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:50:09,060 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:09,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1954762598, now seen corresponding path program 1 times [2020-10-12 20:50:09,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:09,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923546281] [2020-10-12 20:50:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:09,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:50:10,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-12 20:50:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:50:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:50:10,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:50:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:10,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:10,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:10,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:10,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:50:10,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:10,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923546281] [2020-10-12 20:50:10,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:10,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:10,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896308598] [2020-10-12 20:50:10,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:10,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:10,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:10,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:10,216 INFO L87 Difference]: Start difference. First operand 403 states and 639 transitions. Second operand 5 states. [2020-10-12 20:50:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:11,052 INFO L93 Difference]: Finished difference Result 912 states and 1438 transitions. [2020-10-12 20:50:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:11,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-12 20:50:11,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:11,057 INFO L225 Difference]: With dead ends: 912 [2020-10-12 20:50:11,057 INFO L226 Difference]: Without dead ends: 525 [2020-10-12 20:50:11,058 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 20:50:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-10-12 20:50:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 405. [2020-10-12 20:50:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-12 20:50:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 641 transitions. [2020-10-12 20:50:11,074 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 641 transitions. Word has length 100 [2020-10-12 20:50:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:11,075 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 641 transitions. [2020-10-12 20:50:11,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 641 transitions. [2020-10-12 20:50:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:50:11,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:11,077 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:11,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:50:11,077 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash 575619207, now seen corresponding path program 1 times [2020-10-12 20:50:11,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:11,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548737078] [2020-10-12 20:50:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:11,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:12,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:12,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:50:12,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1781 [2020-10-12 20:50:12,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:50:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:50:12,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:12,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:12,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:12,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:12,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:12,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:12,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:12,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:12,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:12,972 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 20:50:12,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548737078] [2020-10-12 20:50:12,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:12,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:12,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524717208] [2020-10-12 20:50:12,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:12,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:12,975 INFO L87 Difference]: Start difference. First operand 405 states and 641 transitions. Second operand 5 states. [2020-10-12 20:50:13,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:13,839 INFO L93 Difference]: Finished difference Result 914 states and 1438 transitions. [2020-10-12 20:50:13,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:13,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:50:13,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:13,845 INFO L225 Difference]: With dead ends: 914 [2020-10-12 20:50:13,846 INFO L226 Difference]: Without dead ends: 525 [2020-10-12 20:50:13,848 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 20:50:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-10-12 20:50:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 415. [2020-10-12 20:50:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-12 20:50:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 655 transitions. [2020-10-12 20:50:13,865 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 655 transitions. Word has length 103 [2020-10-12 20:50:13,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:13,865 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 655 transitions. [2020-10-12 20:50:13,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 655 transitions. [2020-10-12 20:50:13,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:50:13,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:13,867 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:13,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:50:13,868 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:13,868 INFO L82 PathProgramCache]: Analyzing trace with hash -342396728, now seen corresponding path program 1 times [2020-10-12 20:50:13,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:13,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853725145] [2020-10-12 20:50:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:13,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:15,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:50:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-10-12 20:50:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-12 20:50:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:50:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:15,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:15,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:15,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:15,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:15,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:15,931 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 20:50:15,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853725145] [2020-10-12 20:50:15,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:15,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:15,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581388622] [2020-10-12 20:50:15,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:15,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:15,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:15,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:15,934 INFO L87 Difference]: Start difference. First operand 415 states and 655 transitions. Second operand 5 states. [2020-10-12 20:50:16,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:16,907 INFO L93 Difference]: Finished difference Result 996 states and 1571 transitions. [2020-10-12 20:50:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:16,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:50:16,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:16,922 INFO L225 Difference]: With dead ends: 996 [2020-10-12 20:50:16,922 INFO L226 Difference]: Without dead ends: 597 [2020-10-12 20:50:16,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:50:16,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-12 20:50:16,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 465. [2020-10-12 20:50:16,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-12 20:50:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 741 transitions. [2020-10-12 20:50:16,947 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 741 transitions. Word has length 104 [2020-10-12 20:50:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:16,947 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 741 transitions. [2020-10-12 20:50:16,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 741 transitions. [2020-10-12 20:50:16,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:50:16,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:16,949 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:16,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:50:16,949 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:16,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:16,950 INFO L82 PathProgramCache]: Analyzing trace with hash -476410234, now seen corresponding path program 1 times [2020-10-12 20:50:16,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:16,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776703588] [2020-10-12 20:50:16,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:16,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:17,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:17,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:18,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:18,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:50:18,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:18,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-12 20:50:18,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-12 20:50:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:50:18,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:18,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:18,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:18,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:18,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:18,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:18,728 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 20:50:18,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776703588] [2020-10-12 20:50:18,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:18,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:18,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138211439] [2020-10-12 20:50:18,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:18,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:18,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:18,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:18,731 INFO L87 Difference]: Start difference. First operand 465 states and 741 transitions. Second operand 5 states. [2020-10-12 20:50:19,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:19,649 INFO L93 Difference]: Finished difference Result 1094 states and 1741 transitions. [2020-10-12 20:50:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:19,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:50:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:19,657 INFO L225 Difference]: With dead ends: 1094 [2020-10-12 20:50:19,658 INFO L226 Difference]: Without dead ends: 645 [2020-10-12 20:50:19,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:50:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-10-12 20:50:19,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 463. [2020-10-12 20:50:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-12 20:50:19,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 739 transitions. [2020-10-12 20:50:19,686 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 739 transitions. Word has length 104 [2020-10-12 20:50:19,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:19,687 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 739 transitions. [2020-10-12 20:50:19,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 739 transitions. [2020-10-12 20:50:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:50:19,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:19,689 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:19,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:50:19,690 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:19,690 INFO L82 PathProgramCache]: Analyzing trace with hash -2028781873, now seen corresponding path program 1 times [2020-10-12 20:50:19,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:19,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037621470] [2020-10-12 20:50:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:19,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:19,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:20,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:21,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:21,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:50:21,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:21,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1866 [2020-10-12 20:50:21,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:21,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-12 20:50:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:50:21,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:21,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:21,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:21,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:21,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:21,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:21,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:21,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:21,675 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 20:50:21,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037621470] [2020-10-12 20:50:21,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:21,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:21,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057347006] [2020-10-12 20:50:21,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:21,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:21,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:21,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:21,677 INFO L87 Difference]: Start difference. First operand 463 states and 739 transitions. Second operand 5 states. [2020-10-12 20:50:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:22,601 INFO L93 Difference]: Finished difference Result 1084 states and 1728 transitions. [2020-10-12 20:50:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:22,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:50:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:22,611 INFO L225 Difference]: With dead ends: 1084 [2020-10-12 20:50:22,612 INFO L226 Difference]: Without dead ends: 637 [2020-10-12 20:50:22,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:50:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-10-12 20:50:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 465. [2020-10-12 20:50:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-12 20:50:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 741 transitions. [2020-10-12 20:50:22,636 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 741 transitions. Word has length 105 [2020-10-12 20:50:22,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:22,636 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 741 transitions. [2020-10-12 20:50:22,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 741 transitions. [2020-10-12 20:50:22,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:50:22,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:22,638 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:50:22,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:50:22,638 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:22,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:22,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1888233263, now seen corresponding path program 1 times [2020-10-12 20:50:22,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:22,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103115236] [2020-10-12 20:50:22,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:22,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:22,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:23,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:24,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:24,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:50:24,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1966 [2020-10-12 20:50:24,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-12 20:50:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:50:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:24,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:24,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:24,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:24,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:24,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:24,712 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 20:50:24,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103115236] [2020-10-12 20:50:24,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:24,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:24,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687760439] [2020-10-12 20:50:24,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:24,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:24,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:24,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:24,713 INFO L87 Difference]: Start difference. First operand 465 states and 741 transitions. Second operand 5 states. [2020-10-12 20:50:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:25,621 INFO L93 Difference]: Finished difference Result 1038 states and 1646 transitions. [2020-10-12 20:50:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:25,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:50:25,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:25,630 INFO L225 Difference]: With dead ends: 1038 [2020-10-12 20:50:25,630 INFO L226 Difference]: Without dead ends: 589 [2020-10-12 20:50:25,631 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 20:50:25,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-10-12 20:50:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 415. [2020-10-12 20:50:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-12 20:50:25,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 655 transitions. [2020-10-12 20:50:25,646 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 655 transitions. Word has length 105 [2020-10-12 20:50:25,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:25,647 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 655 transitions. [2020-10-12 20:50:25,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 655 transitions. [2020-10-12 20:50:25,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:50:25,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:25,649 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 20:50:25,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:50:25,649 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:25,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:25,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1869795443, now seen corresponding path program 1 times [2020-10-12 20:50:25,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:25,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633505073] [2020-10-12 20:50:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:26,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:27,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:27,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:50:27,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:27,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2053 [2020-10-12 20:50:27,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:27,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:27,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 20:50:27,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:50:27,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:27,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:27,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:27,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:27,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:50:27,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:27,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:27,832 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 20:50:27,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633505073] [2020-10-12 20:50:27,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:27,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:27,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443032323] [2020-10-12 20:50:27,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:27,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:27,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:27,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:27,835 INFO L87 Difference]: Start difference. First operand 415 states and 655 transitions. Second operand 5 states. [2020-10-12 20:50:28,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:28,802 INFO L93 Difference]: Finished difference Result 997 states and 1572 transitions. [2020-10-12 20:50:28,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:28,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:50:28,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:28,809 INFO L225 Difference]: With dead ends: 997 [2020-10-12 20:50:28,809 INFO L226 Difference]: Without dead ends: 598 [2020-10-12 20:50:28,814 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 20:50:28,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-12 20:50:28,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 466. [2020-10-12 20:50:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-12 20:50:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 742 transitions. [2020-10-12 20:50:28,831 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 742 transitions. Word has length 109 [2020-10-12 20:50:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:28,832 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 742 transitions. [2020-10-12 20:50:28,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:28,832 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 742 transitions. [2020-10-12 20:50:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:50:28,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:28,834 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] [2020-10-12 20:50:28,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:50:28,834 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:28,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:28,835 INFO L82 PathProgramCache]: Analyzing trace with hash 2003808949, now seen corresponding path program 1 times [2020-10-12 20:50:28,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:28,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917880495] [2020-10-12 20:50:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:30,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:30,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:50:30,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1768 [2020-10-12 20:50:30,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 20:50:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:50:30,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:30,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:30,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:30,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:30,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:30,709 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 20:50:30,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917880495] [2020-10-12 20:50:30,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:30,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:30,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669545197] [2020-10-12 20:50:30,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:30,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:30,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:30,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:30,712 INFO L87 Difference]: Start difference. First operand 466 states and 742 transitions. Second operand 5 states. [2020-10-12 20:50:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:31,686 INFO L93 Difference]: Finished difference Result 1096 states and 1743 transitions. [2020-10-12 20:50:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:31,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:50:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:31,692 INFO L225 Difference]: With dead ends: 1096 [2020-10-12 20:50:31,693 INFO L226 Difference]: Without dead ends: 646 [2020-10-12 20:50:31,696 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 20:50:31,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2020-10-12 20:50:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 465. [2020-10-12 20:50:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-12 20:50:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 741 transitions. [2020-10-12 20:50:31,718 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 741 transitions. Word has length 109 [2020-10-12 20:50:31,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:31,719 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 741 transitions. [2020-10-12 20:50:31,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:31,720 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 741 transitions. [2020-10-12 20:50:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:50:31,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:31,722 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 20:50:31,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:50:31,722 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:31,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:31,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2124665988, now seen corresponding path program 1 times [2020-10-12 20:50:31,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:31,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673609720] [2020-10-12 20:50:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:31,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:34,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:34,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:50:34,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:34,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2463 [2020-10-12 20:50:34,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:50:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:50:34,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:34,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:34,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:34,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:34,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:34,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:34,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673609720] [2020-10-12 20:50:34,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:34,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:34,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548301809] [2020-10-12 20:50:34,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:34,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:34,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:34,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:34,294 INFO L87 Difference]: Start difference. First operand 465 states and 741 transitions. Second operand 5 states. [2020-10-12 20:50:35,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:35,093 INFO L93 Difference]: Finished difference Result 1024 states and 1622 transitions. [2020-10-12 20:50:35,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:35,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:50:35,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:35,096 INFO L225 Difference]: With dead ends: 1024 [2020-10-12 20:50:35,097 INFO L226 Difference]: Without dead ends: 575 [2020-10-12 20:50:35,098 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 20:50:35,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-12 20:50:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 473. [2020-10-12 20:50:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-12 20:50:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 755 transitions. [2020-10-12 20:50:35,115 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 755 transitions. Word has length 110 [2020-10-12 20:50:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:35,115 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 755 transitions. [2020-10-12 20:50:35,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 755 transitions. [2020-10-12 20:50:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:50:35,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:35,117 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 20:50:35,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:50:35,117 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:35,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:35,118 INFO L82 PathProgramCache]: Analyzing trace with hash 2048431873, now seen corresponding path program 1 times [2020-10-12 20:50:35,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:35,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814496285] [2020-10-12 20:50:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:36,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:36,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:50:36,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:36,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-10-12 20:50:36,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:50:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:50:36,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:36,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:36,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:36,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:36,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:36,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:36,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:36,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:36,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:36,766 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 20:50:36,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814496285] [2020-10-12 20:50:36,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:36,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:36,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266051959] [2020-10-12 20:50:36,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:36,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:36,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:36,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:36,769 INFO L87 Difference]: Start difference. First operand 473 states and 755 transitions. Second operand 5 states. [2020-10-12 20:50:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:37,586 INFO L93 Difference]: Finished difference Result 803 states and 1262 transitions. [2020-10-12 20:50:37,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:37,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:50:37,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:37,592 INFO L225 Difference]: With dead ends: 803 [2020-10-12 20:50:37,592 INFO L226 Difference]: Without dead ends: 575 [2020-10-12 20:50:37,593 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 20:50:37,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-12 20:50:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 477. [2020-10-12 20:50:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-12 20:50:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 761 transitions. [2020-10-12 20:50:37,609 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 761 transitions. Word has length 110 [2020-10-12 20:50:37,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:37,610 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 761 transitions. [2020-10-12 20:50:37,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 761 transitions. [2020-10-12 20:50:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:50:37,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:37,612 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] [2020-10-12 20:50:37,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:50:37,612 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:37,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:37,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1546947449, now seen corresponding path program 1 times [2020-10-12 20:50:37,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:37,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614530353] [2020-10-12 20:50:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:38,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:39,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:39,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:50:39,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-10-12 20:50:39,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:50:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:50:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:39,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:39,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:39,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:39,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:39,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:39,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:39,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:50:39,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614530353] [2020-10-12 20:50:39,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:39,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:39,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144697499] [2020-10-12 20:50:39,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:39,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:39,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:39,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:39,697 INFO L87 Difference]: Start difference. First operand 477 states and 761 transitions. Second operand 5 states. [2020-10-12 20:50:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:40,570 INFO L93 Difference]: Finished difference Result 1030 states and 1630 transitions. [2020-10-12 20:50:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:40,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 20:50:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:40,574 INFO L225 Difference]: With dead ends: 1030 [2020-10-12 20:50:40,574 INFO L226 Difference]: Without dead ends: 569 [2020-10-12 20:50:40,575 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 20:50:40,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-10-12 20:50:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 477. [2020-10-12 20:50:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-12 20:50:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 759 transitions. [2020-10-12 20:50:40,594 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 759 transitions. Word has length 111 [2020-10-12 20:50:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:40,595 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 759 transitions. [2020-10-12 20:50:40,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 759 transitions. [2020-10-12 20:50:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:50:40,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:40,597 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] [2020-10-12 20:50:40,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:50:40,597 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:40,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:40,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2138915158, now seen corresponding path program 1 times [2020-10-12 20:50:40,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:40,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697807038] [2020-10-12 20:50:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:40,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:40,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:41,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:42,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:42,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:50:42,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-10-12 20:50:42,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:50:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:50:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:50:42,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:42,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:42,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:42,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:42,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:42,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:42,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:42,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:42,097 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 20:50:42,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697807038] [2020-10-12 20:50:42,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:50:42,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:50:42,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922105683] [2020-10-12 20:50:42,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:50:42,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:42,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:50:42,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:50:42,099 INFO L87 Difference]: Start difference. First operand 477 states and 759 transitions. Second operand 5 states. [2020-10-12 20:50:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:42,906 INFO L93 Difference]: Finished difference Result 797 states and 1250 transitions. [2020-10-12 20:50:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:50:42,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 20:50:42,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:42,910 INFO L225 Difference]: With dead ends: 797 [2020-10-12 20:50:42,910 INFO L226 Difference]: Without dead ends: 567 [2020-10-12 20:50:42,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:50:42,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-10-12 20:50:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 479. [2020-10-12 20:50:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-10-12 20:50:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 761 transitions. [2020-10-12 20:50:42,927 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 761 transitions. Word has length 111 [2020-10-12 20:50:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:42,928 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 761 transitions. [2020-10-12 20:50:42,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:50:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 761 transitions. [2020-10-12 20:50:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:50:42,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:42,929 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 20:50:42,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:50:42,930 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:42,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:42,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1624891460, now seen corresponding path program 1 times [2020-10-12 20:50:42,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:42,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605588174] [2020-10-12 20:50:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:43,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:47,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:47,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:50:47,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:50:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 20:50:47,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:50:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:50:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:50:47,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:48,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:48,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:48,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:48,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:48,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:50:48,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:48,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:48,572 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 20:50:48,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605588174] [2020-10-12 20:50:48,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:50:48,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:50:48,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522820759] [2020-10-12 20:50:48,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:50:48,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:48,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:50:48,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:50:48,575 INFO L87 Difference]: Start difference. First operand 479 states and 761 transitions. Second operand 11 states. [2020-10-12 20:50:51,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:51,365 INFO L93 Difference]: Finished difference Result 1032 states and 1631 transitions. [2020-10-12 20:50:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:50:51,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 115 [2020-10-12 20:50:51,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:51,371 INFO L225 Difference]: With dead ends: 1032 [2020-10-12 20:50:51,371 INFO L226 Difference]: Without dead ends: 801 [2020-10-12 20:50:51,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:50:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-10-12 20:50:51,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 701. [2020-10-12 20:50:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-10-12 20:50:51,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1117 transitions. [2020-10-12 20:50:51,403 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1117 transitions. Word has length 115 [2020-10-12 20:50:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:51,404 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1117 transitions. [2020-10-12 20:50:51,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:50:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1117 transitions. [2020-10-12 20:50:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:50:51,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:51,407 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 20:50:51,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:50:51,408 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:51,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:51,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1509034978, now seen corresponding path program 1 times [2020-10-12 20:50:51,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:51,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806374340] [2020-10-12 20:50:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:51,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:51,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:56,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:56,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:50:56,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:50:56,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 20:50:56,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 20:50:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:50:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 20:50:56,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:50:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:56,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:50:56,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:50:56,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:50:56,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:50:56,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:50:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:50:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:50:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:50:56,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:50:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:50:56,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806374340] [2020-10-12 20:50:56,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:50:56,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:50:56,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821752440] [2020-10-12 20:50:56,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:50:56,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:50:56,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:50:56,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:50:56,971 INFO L87 Difference]: Start difference. First operand 701 states and 1117 transitions. Second operand 11 states. [2020-10-12 20:50:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:50:59,380 INFO L93 Difference]: Finished difference Result 1560 states and 2484 transitions. [2020-10-12 20:50:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:50:59,381 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 115 [2020-10-12 20:50:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:50:59,387 INFO L225 Difference]: With dead ends: 1560 [2020-10-12 20:50:59,388 INFO L226 Difference]: Without dead ends: 1329 [2020-10-12 20:50:59,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-12 20:50:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-12 20:50:59,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1307. [2020-10-12 20:50:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2020-10-12 20:50:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2095 transitions. [2020-10-12 20:50:59,433 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2095 transitions. Word has length 115 [2020-10-12 20:50:59,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:50:59,433 INFO L479 AbstractCegarLoop]: Abstraction has 1307 states and 2095 transitions. [2020-10-12 20:50:59,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:50:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2095 transitions. [2020-10-12 20:50:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:50:59,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:50:59,436 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 20:50:59,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:50:59,437 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:50:59,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:50:59,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1172390189, now seen corresponding path program 1 times [2020-10-12 20:50:59,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:50:59,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549774918] [2020-10-12 20:50:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:50:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:50:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:50:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:04,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:04,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:51:04,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:51:04,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:51:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:51:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:04,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:04,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:04,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:04,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:04,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:04,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:04,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 20:51:04,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549774918] [2020-10-12 20:51:04,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:04,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:51:04,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359566356] [2020-10-12 20:51:04,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:51:04,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:04,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:51:04,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:51:04,899 INFO L87 Difference]: Start difference. First operand 1307 states and 2095 transitions. Second operand 11 states. [2020-10-12 20:51:07,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:07,944 INFO L93 Difference]: Finished difference Result 1863 states and 2967 transitions. [2020-10-12 20:51:07,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:51:07,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-10-12 20:51:07,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:07,950 INFO L225 Difference]: With dead ends: 1863 [2020-10-12 20:51:07,950 INFO L226 Difference]: Without dead ends: 1410 [2020-10-12 20:51:07,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:51:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2020-10-12 20:51:07,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1307. [2020-10-12 20:51:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2020-10-12 20:51:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2095 transitions. [2020-10-12 20:51:07,992 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2095 transitions. Word has length 116 [2020-10-12 20:51:07,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:07,993 INFO L479 AbstractCegarLoop]: Abstraction has 1307 states and 2095 transitions. [2020-10-12 20:51:07,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:51:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2095 transitions. [2020-10-12 20:51:07,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:51:07,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:07,995 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 20:51:07,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:51:07,996 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:07,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:07,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1201949712, now seen corresponding path program 1 times [2020-10-12 20:51:07,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:07,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16685615] [2020-10-12 20:51:07,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:13,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:13,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:51:13,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:51:13,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:51:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:51:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:13,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:13,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:13,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:13,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:13,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:13,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:13,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:13,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:13,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:13,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:13,410 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 20:51:13,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16685615] [2020-10-12 20:51:13,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:13,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:51:13,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094216792] [2020-10-12 20:51:13,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:51:13,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:13,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:51:13,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:51:13,413 INFO L87 Difference]: Start difference. First operand 1307 states and 2095 transitions. Second operand 10 states. [2020-10-12 20:51:17,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:17,621 INFO L93 Difference]: Finished difference Result 3441 states and 5461 transitions. [2020-10-12 20:51:17,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:51:17,622 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 116 [2020-10-12 20:51:17,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:17,632 INFO L225 Difference]: With dead ends: 3441 [2020-10-12 20:51:17,633 INFO L226 Difference]: Without dead ends: 2150 [2020-10-12 20:51:17,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-12 20:51:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2020-10-12 20:51:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1311. [2020-10-12 20:51:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-12 20:51:17,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 2102 transitions. [2020-10-12 20:51:17,691 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 2102 transitions. Word has length 116 [2020-10-12 20:51:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:17,692 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 2102 transitions. [2020-10-12 20:51:17,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:51:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 2102 transitions. [2020-10-12 20:51:17,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:51:17,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:17,696 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 20:51:17,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:51:17,697 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:17,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1335963218, now seen corresponding path program 1 times [2020-10-12 20:51:17,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:17,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039364411] [2020-10-12 20:51:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:17,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:22,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:22,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:51:22,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 20:51:22,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:51:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:51:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:23,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:23,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:23,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:23,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:23,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:23,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:23,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:23,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:23,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:23,143 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 20:51:23,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039364411] [2020-10-12 20:51:23,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:23,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 20:51:23,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959676381] [2020-10-12 20:51:23,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:51:23,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:23,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:51:23,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:51:23,145 INFO L87 Difference]: Start difference. First operand 1311 states and 2102 transitions. Second operand 11 states. [2020-10-12 20:51:26,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:26,315 INFO L93 Difference]: Finished difference Result 2555 states and 4059 transitions. [2020-10-12 20:51:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:51:26,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-10-12 20:51:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:26,324 INFO L225 Difference]: With dead ends: 2555 [2020-10-12 20:51:26,325 INFO L226 Difference]: Without dead ends: 1917 [2020-10-12 20:51:26,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:51:26,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-10-12 20:51:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1311. [2020-10-12 20:51:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-12 20:51:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 2102 transitions. [2020-10-12 20:51:26,378 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 2102 transitions. Word has length 116 [2020-10-12 20:51:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:26,379 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 2102 transitions. [2020-10-12 20:51:26,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:51:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 2102 transitions. [2020-10-12 20:51:26,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:51:26,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:26,381 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, 1] [2020-10-12 20:51:26,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:51:26,382 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:26,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:26,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1398682489, now seen corresponding path program 1 times [2020-10-12 20:51:26,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:26,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854469194] [2020-10-12 20:51:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:27,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:31,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:31,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 20:51:31,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:31,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4758 [2020-10-12 20:51:31,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:51:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 20:51:31,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:31,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:31,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:31,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:31,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:31,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:31,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:31,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:31,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:31,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:31,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 20:51:31,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854469194] [2020-10-12 20:51:31,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:31,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:51:31,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067963683] [2020-10-12 20:51:31,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:51:31,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:31,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:51:31,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:51:31,412 INFO L87 Difference]: Start difference. First operand 1311 states and 2102 transitions. Second operand 10 states. [2020-10-12 20:51:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:33,563 INFO L93 Difference]: Finished difference Result 2191 states and 3500 transitions. [2020-10-12 20:51:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:51:33,564 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 117 [2020-10-12 20:51:33,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:33,571 INFO L225 Difference]: With dead ends: 2191 [2020-10-12 20:51:33,572 INFO L226 Difference]: Without dead ends: 1551 [2020-10-12 20:51:33,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:51:33,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2020-10-12 20:51:33,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1361. [2020-10-12 20:51:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-10-12 20:51:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 2190 transitions. [2020-10-12 20:51:33,624 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 2190 transitions. Word has length 117 [2020-10-12 20:51:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:33,624 INFO L479 AbstractCegarLoop]: Abstraction has 1361 states and 2190 transitions. [2020-10-12 20:51:33,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:51:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 2190 transitions. [2020-10-12 20:51:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:51:33,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:33,627 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, 1] [2020-10-12 20:51:33,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:51:33,627 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:33,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:33,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1539231099, now seen corresponding path program 1 times [2020-10-12 20:51:33,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:33,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908860562] [2020-10-12 20:51:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:38,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:38,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 20:51:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:51:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-12 20:51:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:51:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:51:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 20:51:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:38,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:38,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:38,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:38,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:38,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:51:38,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:38,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 20:51:38,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908860562] [2020-10-12 20:51:38,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:51:38,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:51:38,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471551918] [2020-10-12 20:51:38,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:51:38,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:38,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:51:38,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:51:38,927 INFO L87 Difference]: Start difference. First operand 1361 states and 2190 transitions. Second operand 9 states. [2020-10-12 20:51:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:41,320 INFO L93 Difference]: Finished difference Result 3240 states and 5181 transitions. [2020-10-12 20:51:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:51:41,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2020-10-12 20:51:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:41,327 INFO L225 Difference]: With dead ends: 3240 [2020-10-12 20:51:41,327 INFO L226 Difference]: Without dead ends: 1895 [2020-10-12 20:51:41,330 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 20:51:41,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-10-12 20:51:41,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1365. [2020-10-12 20:51:41,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1365 states. [2020-10-12 20:51:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2194 transitions. [2020-10-12 20:51:41,376 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2194 transitions. Word has length 117 [2020-10-12 20:51:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:41,377 INFO L479 AbstractCegarLoop]: Abstraction has 1365 states and 2194 transitions. [2020-10-12 20:51:41,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:51:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2194 transitions. [2020-10-12 20:51:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:51:41,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:41,379 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:41,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:51:41,380 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:41,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1822356076, now seen corresponding path program 1 times [2020-10-12 20:51:41,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:41,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155956109] [2020-10-12 20:51:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:41,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:41,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:41,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 20:51:41,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:51:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 20:51:41,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:51:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 20:51:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:51:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:41,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:41,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:41,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:41,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:41,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:41,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:41,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:41,729 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 20:51:41,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155956109] [2020-10-12 20:51:41,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:41,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:51:41,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733359158] [2020-10-12 20:51:41,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:51:41,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:41,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:51:41,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:51:41,731 INFO L87 Difference]: Start difference. First operand 1365 states and 2194 transitions. Second operand 4 states. [2020-10-12 20:51:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:42,254 INFO L93 Difference]: Finished difference Result 4061 states and 6541 transitions. [2020-10-12 20:51:42,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:51:42,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-12 20:51:42,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:42,267 INFO L225 Difference]: With dead ends: 4061 [2020-10-12 20:51:42,267 INFO L226 Difference]: Without dead ends: 2712 [2020-10-12 20:51:42,270 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 20:51:42,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2020-10-12 20:51:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2712. [2020-10-12 20:51:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2712 states. [2020-10-12 20:51:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 4349 transitions. [2020-10-12 20:51:42,346 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 4349 transitions. Word has length 117 [2020-10-12 20:51:42,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:42,347 INFO L479 AbstractCegarLoop]: Abstraction has 2712 states and 4349 transitions. [2020-10-12 20:51:42,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:51:42,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 4349 transitions. [2020-10-12 20:51:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:51:42,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:42,351 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, 1] [2020-10-12 20:51:42,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:51:42,352 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:42,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:42,352 INFO L82 PathProgramCache]: Analyzing trace with hash 113219454, now seen corresponding path program 1 times [2020-10-12 20:51:42,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:42,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974729577] [2020-10-12 20:51:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:42,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:42,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:51:42,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:42,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 20:51:42,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:51:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-12 20:51:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:51:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:42,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:42,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:42,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:42,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:51:42,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:42,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:51:42,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974729577] [2020-10-12 20:51:42,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:42,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:51:42,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312997103] [2020-10-12 20:51:42,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:51:42,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:42,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:51:42,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:51:42,731 INFO L87 Difference]: Start difference. First operand 2712 states and 4349 transitions. Second operand 4 states. [2020-10-12 20:51:43,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:43,224 INFO L93 Difference]: Finished difference Result 4061 states and 6523 transitions. [2020-10-12 20:51:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:51:43,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-12 20:51:43,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:43,236 INFO L225 Difference]: With dead ends: 4061 [2020-10-12 20:51:43,236 INFO L226 Difference]: Without dead ends: 4059 [2020-10-12 20:51:43,238 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 20:51:43,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2020-10-12 20:51:43,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 4059. [2020-10-12 20:51:43,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4059 states. [2020-10-12 20:51:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4059 states to 4059 states and 6516 transitions. [2020-10-12 20:51:43,366 INFO L78 Accepts]: Start accepts. Automaton has 4059 states and 6516 transitions. Word has length 119 [2020-10-12 20:51:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:43,366 INFO L479 AbstractCegarLoop]: Abstraction has 4059 states and 6516 transitions. [2020-10-12 20:51:43,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:51:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4059 states and 6516 transitions. [2020-10-12 20:51:43,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 20:51:43,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:43,373 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:43,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:51:43,373 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:43,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:43,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1316377737, now seen corresponding path program 1 times [2020-10-12 20:51:43,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:43,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573722503] [2020-10-12 20:51:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:43,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:43,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:43,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:48,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:48,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 20:51:48,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:51:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:51:48,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:51:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:51:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:48,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:48,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:48,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:48,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:48,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:48,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:48,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:51:48,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573722503] [2020-10-12 20:51:48,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:48,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:48,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962987273] [2020-10-12 20:51:48,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:48,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:48,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:48,517 INFO L87 Difference]: Start difference. First operand 4059 states and 6516 transitions. Second operand 5 states. [2020-10-12 20:51:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:49,627 INFO L93 Difference]: Finished difference Result 9674 states and 15418 transitions. [2020-10-12 20:51:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:49,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-12 20:51:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:49,643 INFO L225 Difference]: With dead ends: 9674 [2020-10-12 20:51:49,643 INFO L226 Difference]: Without dead ends: 5631 [2020-10-12 20:51:49,649 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 20:51:49,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2020-10-12 20:51:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 4473. [2020-10-12 20:51:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4473 states. [2020-10-12 20:51:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 7218 transitions. [2020-10-12 20:51:49,756 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 7218 transitions. Word has length 145 [2020-10-12 20:51:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:49,757 INFO L479 AbstractCegarLoop]: Abstraction has 4473 states and 7218 transitions. [2020-10-12 20:51:49,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 7218 transitions. [2020-10-12 20:51:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 20:51:49,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:49,763 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:49,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:51:49,764 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:49,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:49,764 INFO L82 PathProgramCache]: Analyzing trace with hash -422891399, now seen corresponding path program 1 times [2020-10-12 20:51:49,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:49,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382345427] [2020-10-12 20:51:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:49,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:54,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:54,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 20:51:54,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:51:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:51:54,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:51:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:51:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:51:54,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:54,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:51:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:54,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:54,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:51:54,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:51:54,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:51:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:51:54,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:51:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:51:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:51:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:51:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:51:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:51:54,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382345427] [2020-10-12 20:51:54,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:51:54,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:51:54,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694149743] [2020-10-12 20:51:54,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:51:54,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:51:54,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:51:54,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:51:54,902 INFO L87 Difference]: Start difference. First operand 4473 states and 7218 transitions. Second operand 5 states. [2020-10-12 20:51:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:51:56,068 INFO L93 Difference]: Finished difference Result 10484 states and 16804 transitions. [2020-10-12 20:51:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:51:56,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-12 20:51:56,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:51:56,083 INFO L225 Difference]: With dead ends: 10484 [2020-10-12 20:51:56,083 INFO L226 Difference]: Without dead ends: 6027 [2020-10-12 20:51:56,091 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 20:51:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6027 states. [2020-10-12 20:51:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6027 to 4455. [2020-10-12 20:51:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4455 states. [2020-10-12 20:51:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4455 states to 4455 states and 7200 transitions. [2020-10-12 20:51:56,276 INFO L78 Accepts]: Start accepts. Automaton has 4455 states and 7200 transitions. Word has length 145 [2020-10-12 20:51:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:51:56,276 INFO L479 AbstractCegarLoop]: Abstraction has 4455 states and 7200 transitions. [2020-10-12 20:51:56,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:51:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4455 states and 7200 transitions. [2020-10-12 20:51:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 20:51:56,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:51:56,284 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:51:56,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:51:56,284 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:51:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:51:56,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1705454990, now seen corresponding path program 1 times [2020-10-12 20:51:56,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:51:56,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582053910] [2020-10-12 20:51:56,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:51:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:51:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:56,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:51:56,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:01,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:01,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 20:52:01,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4913 [2020-10-12 20:52:01,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:52:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:52:01,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:01,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:01,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:01,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:01,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:01,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:01,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:52:01,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582053910] [2020-10-12 20:52:01,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:01,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:01,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252214711] [2020-10-12 20:52:01,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:01,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:01,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:01,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:01,316 INFO L87 Difference]: Start difference. First operand 4455 states and 7200 transitions. Second operand 5 states. [2020-10-12 20:52:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:02,472 INFO L93 Difference]: Finished difference Result 10412 states and 16702 transitions. [2020-10-12 20:52:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:02,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-12 20:52:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:02,485 INFO L225 Difference]: With dead ends: 10412 [2020-10-12 20:52:02,485 INFO L226 Difference]: Without dead ends: 5973 [2020-10-12 20:52:02,492 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 20:52:02,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5973 states. [2020-10-12 20:52:02,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5973 to 4887. [2020-10-12 20:52:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4887 states. [2020-10-12 20:52:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 7920 transitions. [2020-10-12 20:52:02,675 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 7920 transitions. Word has length 146 [2020-10-12 20:52:02,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:02,675 INFO L479 AbstractCegarLoop]: Abstraction has 4887 states and 7920 transitions. [2020-10-12 20:52:02,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:02,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 7920 transitions. [2020-10-12 20:52:02,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 20:52:02,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:02,682 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:02,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:52:02,683 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:02,683 INFO L82 PathProgramCache]: Analyzing trace with hash -661239604, now seen corresponding path program 1 times [2020-10-12 20:52:02,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:02,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191758625] [2020-10-12 20:52:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:02,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:07,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:07,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 20:52:07,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:07,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:52:07,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:52:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:52:07,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:07,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:07,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:07,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:07,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:07,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:07,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:52:07,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:07,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:07,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:07,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:07,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:52:07,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191758625] [2020-10-12 20:52:07,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:07,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:07,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887858453] [2020-10-12 20:52:07,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:07,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:07,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:07,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:07,885 INFO L87 Difference]: Start difference. First operand 4887 states and 7920 transitions. Second operand 5 states. [2020-10-12 20:52:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:09,013 INFO L93 Difference]: Finished difference Result 10862 states and 17440 transitions. [2020-10-12 20:52:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:09,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-12 20:52:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:09,027 INFO L225 Difference]: With dead ends: 10862 [2020-10-12 20:52:09,028 INFO L226 Difference]: Without dead ends: 5991 [2020-10-12 20:52:09,036 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 20:52:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2020-10-12 20:52:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 4473. [2020-10-12 20:52:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4473 states. [2020-10-12 20:52:09,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 7218 transitions. [2020-10-12 20:52:09,197 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 7218 transitions. Word has length 146 [2020-10-12 20:52:09,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:09,197 INFO L479 AbstractCegarLoop]: Abstraction has 4473 states and 7218 transitions. [2020-10-12 20:52:09,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:09,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 7218 transitions. [2020-10-12 20:52:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 20:52:09,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:09,205 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:09,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:52:09,205 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:09,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:09,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1762959658, now seen corresponding path program 1 times [2020-10-12 20:52:09,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:09,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349522872] [2020-10-12 20:52:09,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:09,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:09,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:10,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:14,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:14,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 20:52:14,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:52:14,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:52:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:52:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:14,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:14,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:14,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:14,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:14,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:14,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:14,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:14,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:14,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:14,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:52:14,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349522872] [2020-10-12 20:52:14,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:14,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:14,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650630843] [2020-10-12 20:52:14,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:14,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:14,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:14,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:14,341 INFO L87 Difference]: Start difference. First operand 4473 states and 7218 transitions. Second operand 5 states. [2020-10-12 20:52:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:15,547 INFO L93 Difference]: Finished difference Result 10448 states and 16720 transitions. [2020-10-12 20:52:15,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:15,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-12 20:52:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:15,556 INFO L225 Difference]: With dead ends: 10448 [2020-10-12 20:52:15,557 INFO L226 Difference]: Without dead ends: 5991 [2020-10-12 20:52:15,563 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 20:52:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2020-10-12 20:52:15,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 5067. [2020-10-12 20:52:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5067 states. [2020-10-12 20:52:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 8208 transitions. [2020-10-12 20:52:15,724 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 8208 transitions. Word has length 156 [2020-10-12 20:52:15,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:15,724 INFO L479 AbstractCegarLoop]: Abstraction has 5067 states and 8208 transitions. [2020-10-12 20:52:15,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 8208 transitions. [2020-10-12 20:52:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 20:52:15,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:15,732 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:15,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:52:15,733 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:15,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:15,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1686725543, now seen corresponding path program 1 times [2020-10-12 20:52:15,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:15,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139009585] [2020-10-12 20:52:15,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:15,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:17,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:20,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:20,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 20:52:20,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:20,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:52:20,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:52:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:52:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:20,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:20,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:20,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:20,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:20,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:20,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:52:20,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139009585] [2020-10-12 20:52:20,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:20,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:20,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938073060] [2020-10-12 20:52:20,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:20,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:20,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:20,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:20,868 INFO L87 Difference]: Start difference. First operand 5067 states and 8208 transitions. Second operand 5 states. [2020-10-12 20:52:21,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:21,753 INFO L93 Difference]: Finished difference Result 10550 states and 16930 transitions. [2020-10-12 20:52:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:21,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-12 20:52:21,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:21,760 INFO L225 Difference]: With dead ends: 10550 [2020-10-12 20:52:21,760 INFO L226 Difference]: Without dead ends: 5499 [2020-10-12 20:52:21,766 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 20:52:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2020-10-12 20:52:21,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 4995. [2020-10-12 20:52:21,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4995 states. [2020-10-12 20:52:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4995 states to 4995 states and 8064 transitions. [2020-10-12 20:52:21,869 INFO L78 Accepts]: Start accepts. Automaton has 4995 states and 8064 transitions. Word has length 156 [2020-10-12 20:52:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:21,869 INFO L479 AbstractCegarLoop]: Abstraction has 4995 states and 8064 transitions. [2020-10-12 20:52:21,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:21,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4995 states and 8064 transitions. [2020-10-12 20:52:21,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 20:52:21,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:21,875 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:21,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:52:21,875 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:21,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1803634408, now seen corresponding path program 1 times [2020-10-12 20:52:21,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:21,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020845927] [2020-10-12 20:52:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:22,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:26,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:26,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 20:52:26,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4795 [2020-10-12 20:52:26,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 20:52:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:52:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:26,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:26,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:26,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:26,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:26,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:26,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:26,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-12 20:52:26,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020845927] [2020-10-12 20:52:26,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:26,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:26,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362675182] [2020-10-12 20:52:26,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:26,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:26,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:26,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:26,813 INFO L87 Difference]: Start difference. First operand 4995 states and 8064 transitions. Second operand 5 states. [2020-10-12 20:52:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:28,082 INFO L93 Difference]: Finished difference Result 11537 states and 18523 transitions. [2020-10-12 20:52:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:28,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-12 20:52:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:28,090 INFO L225 Difference]: With dead ends: 11537 [2020-10-12 20:52:28,090 INFO L226 Difference]: Without dead ends: 6558 [2020-10-12 20:52:28,097 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 20:52:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2020-10-12 20:52:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 4986. [2020-10-12 20:52:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4986 states. [2020-10-12 20:52:28,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4986 states to 4986 states and 8055 transitions. [2020-10-12 20:52:28,206 INFO L78 Accepts]: Start accepts. Automaton has 4986 states and 8055 transitions. Word has length 156 [2020-10-12 20:52:28,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:28,207 INFO L479 AbstractCegarLoop]: Abstraction has 4986 states and 8055 transitions. [2020-10-12 20:52:28,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:28,207 INFO L276 IsEmpty]: Start isEmpty. Operand 4986 states and 8055 transitions. [2020-10-12 20:52:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 20:52:28,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:28,212 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:28,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:52:28,213 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:28,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:28,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1663085798, now seen corresponding path program 1 times [2020-10-12 20:52:28,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:28,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909784636] [2020-10-12 20:52:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:28,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:28,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:28,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:28,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 20:52:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:52:33,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:52:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-12 20:52:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:52:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:33,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:33,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:33,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:33,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:52:33,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:33,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:52:33,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909784636] [2020-10-12 20:52:33,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:33,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:52:33,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738878822] [2020-10-12 20:52:33,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:52:33,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:33,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:52:33,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:52:33,518 INFO L87 Difference]: Start difference. First operand 4986 states and 8055 transitions. Second operand 7 states. [2020-10-12 20:52:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:36,149 INFO L93 Difference]: Finished difference Result 21680 states and 35029 transitions. [2020-10-12 20:52:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:52:36,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-10-12 20:52:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:36,169 INFO L225 Difference]: With dead ends: 21680 [2020-10-12 20:52:36,169 INFO L226 Difference]: Without dead ends: 16710 [2020-10-12 20:52:36,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:52:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16710 states. [2020-10-12 20:52:36,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16710 to 8811. [2020-10-12 20:52:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8811 states. [2020-10-12 20:52:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8811 states to 8811 states and 14346 transitions. [2020-10-12 20:52:36,425 INFO L78 Accepts]: Start accepts. Automaton has 8811 states and 14346 transitions. Word has length 156 [2020-10-12 20:52:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:36,425 INFO L479 AbstractCegarLoop]: Abstraction has 8811 states and 14346 transitions. [2020-10-12 20:52:36,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:52:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 8811 states and 14346 transitions. [2020-10-12 20:52:36,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-12 20:52:36,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:36,434 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:36,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:52:36,434 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:36,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:36,435 INFO L82 PathProgramCache]: Analyzing trace with hash 575698942, now seen corresponding path program 1 times [2020-10-12 20:52:36,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:36,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019272309] [2020-10-12 20:52:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:38,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:41,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:41,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 20:52:41,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:52:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:52:41,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:52:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:52:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:41,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:41,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:41,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:41,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:41,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:41,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:52:41,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019272309] [2020-10-12 20:52:41,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:41,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:41,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678132124] [2020-10-12 20:52:41,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:41,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:41,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:41,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:41,581 INFO L87 Difference]: Start difference. First operand 8811 states and 14346 transitions. Second operand 5 states. [2020-10-12 20:52:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:42,784 INFO L93 Difference]: Finished difference Result 18839 states and 30451 transitions. [2020-10-12 20:52:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:42,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-12 20:52:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:42,796 INFO L225 Difference]: With dead ends: 18839 [2020-10-12 20:52:42,796 INFO L226 Difference]: Without dead ends: 10044 [2020-10-12 20:52:42,807 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 20:52:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2020-10-12 20:52:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 9126. [2020-10-12 20:52:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9126 states. [2020-10-12 20:52:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9126 states to 9126 states and 14877 transitions. [2020-10-12 20:52:43,051 INFO L78 Accepts]: Start accepts. Automaton has 9126 states and 14877 transitions. Word has length 161 [2020-10-12 20:52:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:43,051 INFO L479 AbstractCegarLoop]: Abstraction has 9126 states and 14877 transitions. [2020-10-12 20:52:43,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 9126 states and 14877 transitions. [2020-10-12 20:52:43,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 20:52:43,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:43,061 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:43,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:52:43,061 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:43,062 INFO L82 PathProgramCache]: Analyzing trace with hash -134779986, now seen corresponding path program 1 times [2020-10-12 20:52:43,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:43,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853139934] [2020-10-12 20:52:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:43,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:48,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:48,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 20:52:48,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 20:52:48,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:52:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:52:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:48,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:48,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:48,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:48,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:52:48,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-12 20:52:48,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853139934] [2020-10-12 20:52:48,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:48,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:48,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642428739] [2020-10-12 20:52:48,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:48,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:48,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:48,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:48,199 INFO L87 Difference]: Start difference. First operand 9126 states and 14877 transitions. Second operand 5 states. [2020-10-12 20:52:49,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:49,269 INFO L93 Difference]: Finished difference Result 19064 states and 30838 transitions. [2020-10-12 20:52:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:49,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-12 20:52:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:49,281 INFO L225 Difference]: With dead ends: 19064 [2020-10-12 20:52:49,281 INFO L226 Difference]: Without dead ends: 9954 [2020-10-12 20:52:49,291 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 20:52:49,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9954 states. [2020-10-12 20:52:49,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9954 to 9126. [2020-10-12 20:52:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9126 states. [2020-10-12 20:52:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9126 states to 9126 states and 14841 transitions. [2020-10-12 20:52:49,515 INFO L78 Accepts]: Start accepts. Automaton has 9126 states and 14841 transitions. Word has length 163 [2020-10-12 20:52:49,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:49,516 INFO L479 AbstractCegarLoop]: Abstraction has 9126 states and 14841 transitions. [2020-10-12 20:52:49,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:49,516 INFO L276 IsEmpty]: Start isEmpty. Operand 9126 states and 14841 transitions. [2020-10-12 20:52:49,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 20:52:49,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:49,526 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:49,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:52:49,526 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:49,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:49,527 INFO L82 PathProgramCache]: Analyzing trace with hash -552176592, now seen corresponding path program 1 times [2020-10-12 20:52:49,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:49,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713099404] [2020-10-12 20:52:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:49,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:49,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:54,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 20:52:54,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:52:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 20:52:54,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:52:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:52:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:52:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:54,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:52:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:54,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:54,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:52:54,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:52:54,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:52:54,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:52:54,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:52:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:52:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:52:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:52:54,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:52:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-12 20:52:54,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713099404] [2020-10-12 20:52:54,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:52:54,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:52:54,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020761285] [2020-10-12 20:52:54,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:52:54,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:52:54,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:52:54,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:52:54,675 INFO L87 Difference]: Start difference. First operand 9126 states and 14841 transitions. Second operand 5 states. [2020-10-12 20:52:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:52:55,837 INFO L93 Difference]: Finished difference Result 19145 states and 30865 transitions. [2020-10-12 20:52:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:52:55,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-12 20:52:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:52:55,848 INFO L225 Difference]: With dead ends: 19145 [2020-10-12 20:52:55,849 INFO L226 Difference]: Without dead ends: 10035 [2020-10-12 20:52:55,860 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 20:52:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10035 states. [2020-10-12 20:52:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10035 to 9126. [2020-10-12 20:52:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9126 states. [2020-10-12 20:52:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9126 states to 9126 states and 14805 transitions. [2020-10-12 20:52:56,198 INFO L78 Accepts]: Start accepts. Automaton has 9126 states and 14805 transitions. Word has length 163 [2020-10-12 20:52:56,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:52:56,198 INFO L479 AbstractCegarLoop]: Abstraction has 9126 states and 14805 transitions. [2020-10-12 20:52:56,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:52:56,198 INFO L276 IsEmpty]: Start isEmpty. Operand 9126 states and 14805 transitions. [2020-10-12 20:52:56,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 20:52:56,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:52:56,206 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:52:56,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:52:56,206 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:52:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:52:56,206 INFO L82 PathProgramCache]: Analyzing trace with hash 441296229, now seen corresponding path program 1 times [2020-10-12 20:52:56,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:52:56,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983427080] [2020-10-12 20:52:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:52:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:52:56,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:56,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:56,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:52:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:01,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:01,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:53:01,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:01,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:53:01,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:53:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:53:01,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:01,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:01,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:01,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:01,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:01,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:01,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:01,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:01,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:01,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-12 20:53:01,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983427080] [2020-10-12 20:53:01,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:01,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:01,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169180807] [2020-10-12 20:53:01,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:01,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:01,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:01,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:01,327 INFO L87 Difference]: Start difference. First operand 9126 states and 14805 transitions. Second operand 5 states. [2020-10-12 20:53:02,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:02,370 INFO L93 Difference]: Finished difference Result 18884 states and 30442 transitions. [2020-10-12 20:53:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:02,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-12 20:53:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:02,381 INFO L225 Difference]: With dead ends: 18884 [2020-10-12 20:53:02,381 INFO L226 Difference]: Without dead ends: 9774 [2020-10-12 20:53:02,390 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 20:53:02,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9774 states. [2020-10-12 20:53:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9774 to 9126. [2020-10-12 20:53:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9126 states. [2020-10-12 20:53:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9126 states to 9126 states and 14769 transitions. [2020-10-12 20:53:02,613 INFO L78 Accepts]: Start accepts. Automaton has 9126 states and 14769 transitions. Word has length 164 [2020-10-12 20:53:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:02,614 INFO L479 AbstractCegarLoop]: Abstraction has 9126 states and 14769 transitions. [2020-10-12 20:53:02,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 9126 states and 14769 transitions. [2020-10-12 20:53:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 20:53:02,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:02,620 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:02,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:53:02,621 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash 386903331, now seen corresponding path program 1 times [2020-10-12 20:53:02,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:02,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065349703] [2020-10-12 20:53:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:07,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:07,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:53:07,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:53:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 20:53:07,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 20:53:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:53:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:07,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:07,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:07,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:07,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:07,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:07,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:07,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-12 20:53:07,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065349703] [2020-10-12 20:53:07,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:07,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:07,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243850433] [2020-10-12 20:53:07,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:07,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:07,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:07,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:07,748 INFO L87 Difference]: Start difference. First operand 9126 states and 14769 transitions. Second operand 5 states. [2020-10-12 20:53:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:08,863 INFO L93 Difference]: Finished difference Result 18965 states and 30469 transitions. [2020-10-12 20:53:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:08,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-12 20:53:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:08,874 INFO L225 Difference]: With dead ends: 18965 [2020-10-12 20:53:08,875 INFO L226 Difference]: Without dead ends: 9855 [2020-10-12 20:53:08,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9855 states. [2020-10-12 20:53:09,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9855 to 9126. [2020-10-12 20:53:09,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9126 states. [2020-10-12 20:53:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9126 states to 9126 states and 14733 transitions. [2020-10-12 20:53:09,183 INFO L78 Accepts]: Start accepts. Automaton has 9126 states and 14733 transitions. Word has length 164 [2020-10-12 20:53:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:09,183 INFO L479 AbstractCegarLoop]: Abstraction has 9126 states and 14733 transitions. [2020-10-12 20:53:09,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 9126 states and 14733 transitions. [2020-10-12 20:53:09,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 20:53:09,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:09,190 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:09,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:53:09,190 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:09,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:09,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1361052227, now seen corresponding path program 1 times [2020-10-12 20:53:09,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:09,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858799123] [2020-10-12 20:53:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:09,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:13,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:14,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:14,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 20:53:14,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:53:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 20:53:14,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 20:53:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 20:53:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:14,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:14,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:14,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:14,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-12 20:53:14,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858799123] [2020-10-12 20:53:14,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:14,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:14,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937097746] [2020-10-12 20:53:14,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:14,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:14,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:14,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:14,371 INFO L87 Difference]: Start difference. First operand 9126 states and 14733 transitions. Second operand 5 states. [2020-10-12 20:53:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:53:15,789 INFO L93 Difference]: Finished difference Result 21005 states and 33811 transitions. [2020-10-12 20:53:15,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:53:15,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-12 20:53:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:53:15,804 INFO L225 Difference]: With dead ends: 21005 [2020-10-12 20:53:15,805 INFO L226 Difference]: Without dead ends: 11895 [2020-10-12 20:53:15,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:53:15,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11895 states. [2020-10-12 20:53:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11895 to 9558. [2020-10-12 20:53:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9558 states. [2020-10-12 20:53:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9558 states to 9558 states and 15345 transitions. [2020-10-12 20:53:16,052 INFO L78 Accepts]: Start accepts. Automaton has 9558 states and 15345 transitions. Word has length 170 [2020-10-12 20:53:16,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:53:16,053 INFO L479 AbstractCegarLoop]: Abstraction has 9558 states and 15345 transitions. [2020-10-12 20:53:16,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:53:16,053 INFO L276 IsEmpty]: Start isEmpty. Operand 9558 states and 15345 transitions. [2020-10-12 20:53:16,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 20:53:16,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:53:16,060 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:53:16,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:53:16,061 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:53:16,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:53:16,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1379707685, now seen corresponding path program 1 times [2020-10-12 20:53:16,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:53:16,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147472616] [2020-10-12 20:53:16,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:53:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:16,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:16,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:20,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:21,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 20:53:21,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:53:21,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:53:21,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:53:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 20:53:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 20:53:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:53:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:53:21,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:53:21,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:53:21,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:53:21,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:53:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:53:21,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:53:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:53:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:53:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:53:21,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:53:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-12 20:53:21,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147472616] [2020-10-12 20:53:21,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:53:21,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:53:21,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143265593] [2020-10-12 20:53:21,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:53:21,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:53:21,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:53:21,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:53:21,185 INFO L87 Difference]: Start difference. First operand 9558 states and 15345 transitions. Second operand 5 states.