/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_clnt.blast.03.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:36:44,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:36:44,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:36:44,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:36:44,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:36:44,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:36:44,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:36:44,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:36:44,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:36:44,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:36:44,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:36:44,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:36:44,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:36:44,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:36:44,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:36:44,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:36:44,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:36:44,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:36:44,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:36:44,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:36:44,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:36:44,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:36:44,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:36:44,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:36:44,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:36:44,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:36:44,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:36:44,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:36:44,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:36:44,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:36:44,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:36:44,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:36:44,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:36:44,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:36:44,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:36:44,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:36:44,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:36:44,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:36:44,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:36:44,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:36:44,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:36:44,710 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 [2020-10-15 04:36:44,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:36:44,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:36:44,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:36:44,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:36:44,756 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:36:44,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:36:44,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:36:44,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:36:44,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:36:44,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:36:44,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:36:44,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:36:44,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:36:44,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:36:44,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:36:44,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:36:44,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:36:44,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:36:44,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:36:44,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:36:44,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:36:44,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:36:44,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:36:44,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:36:44,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:36:44,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:36:44,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:36:44,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:36:44,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:36:44,762 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:36:45,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:36:45,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:36:45,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:36:45,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:36:45,077 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:36:45,078 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_clnt.blast.03.i.cil-2.c [2020-10-15 04:36:45,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a83fc34b0/1ff52aa1e2194d7484947c74720f637f/FLAG47c5f6403 [2020-10-15 04:36:45,750 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:36:45,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_clnt.blast.03.i.cil-2.c [2020-10-15 04:36:45,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a83fc34b0/1ff52aa1e2194d7484947c74720f637f/FLAG47c5f6403 [2020-10-15 04:36:45,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a83fc34b0/1ff52aa1e2194d7484947c74720f637f [2020-10-15 04:36:46,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:36:46,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:36:46,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:36:46,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:36:46,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:36:46,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:36:46" (1/1) ... [2020-10-15 04:36:46,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c46e88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46, skipping insertion in model container [2020-10-15 04:36:46,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:36:46" (1/1) ... [2020-10-15 04:36:46,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:36:46,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:36:46,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:36:46,751 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:36:46,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:36:46,945 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:36:46,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46 WrapperNode [2020-10-15 04:36:46,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:36:46,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:36:46,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:36:46,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:36:46,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46" (1/1) ... [2020-10-15 04:36:46,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46" (1/1) ... [2020-10-15 04:36:46,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46" (1/1) ... [2020-10-15 04:36:46,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46" (1/1) ... [2020-10-15 04:36:47,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46" (1/1) ... [2020-10-15 04:36:47,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46" (1/1) ... [2020-10-15 04:36:47,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46" (1/1) ... [2020-10-15 04:36:47,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:36:47,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:36:47,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:36:47,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:36:47,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46" (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 [2020-10-15 04:36:47,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:36:47,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:36:47,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2020-10-15 04:36:47,182 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2020-10-15 04:36:47,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:36:47,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-15 04:36:47,183 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:36:47,184 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:36:47,184 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:36:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:36:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:36:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:36:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:36:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:36:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:36:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:36:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2020-10-15 04:36:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:36:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-15 04:36:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2020-10-15 04:36:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:36:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:36:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:36:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:36:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:36:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:36:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:36:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:36:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:36:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:36:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:36:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:36:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:36:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:36:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:36:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:36:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:36:47,903 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:36:48,517 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-15 04:36:48,517 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-15 04:36:48,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:36:48,552 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:36:48,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:36:48 BoogieIcfgContainer [2020-10-15 04:36:48,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:36:48,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:36:48,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:36:48,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:36:48,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:36:46" (1/3) ... [2020-10-15 04:36:48,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3318dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:36:48, skipping insertion in model container [2020-10-15 04:36:48,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:36:46" (2/3) ... [2020-10-15 04:36:48,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3318dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:36:48, skipping insertion in model container [2020-10-15 04:36:48,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:36:48" (3/3) ... [2020-10-15 04:36:48,571 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.03.i.cil-2.c [2020-10-15 04:36:48,582 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:36:48,592 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:36:48,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:36:48,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:36:48,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:36:48,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:36:48,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:36:48,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:36:48,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:36:48,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:36:48,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:36:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-10-15 04:36:48,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 04:36:48,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:36:48,659 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] [2020-10-15 04:36:48,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:36:48,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:36:48,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1671955434, now seen corresponding path program 1 times [2020-10-15 04:36:48,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:36:48,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379223724] [2020-10-15 04:36:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:36:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:36:49,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:49,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:50,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:36:50,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 04:36:50,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:36:50,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1258 [2020-10-15 04:36:50,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:36:50,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:36:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:36:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:36:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 04:36:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:36:50,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:36:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:36:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:50,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:36:50,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:36:50,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:36:50,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:36:50,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:36:50,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:36:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:36:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:36:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:36:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:36:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:36:50,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379223724] [2020-10-15 04:36:50,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:36:50,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:36:50,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593088387] [2020-10-15 04:36:50,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:36:50,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:36:50,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:36:50,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:36:50,373 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 4 states. [2020-10-15 04:36:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:36:51,356 INFO L93 Difference]: Finished difference Result 381 states and 638 transitions. [2020-10-15 04:36:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:36:51,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-15 04:36:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:36:51,373 INFO L225 Difference]: With dead ends: 381 [2020-10-15 04:36:51,374 INFO L226 Difference]: Without dead ends: 221 [2020-10-15 04:36:51,379 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 [2020-10-15 04:36:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-15 04:36:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2020-10-15 04:36:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-15 04:36:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 327 transitions. [2020-10-15 04:36:51,442 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 327 transitions. Word has length 30 [2020-10-15 04:36:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:36:51,442 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 327 transitions. [2020-10-15 04:36:51,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:36:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 327 transitions. [2020-10-15 04:36:51,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 04:36:51,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:36:51,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:36:51,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:36:51,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:36:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:36:51,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1986456738, now seen corresponding path program 1 times [2020-10-15 04:36:51,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:36:51,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205071255] [2020-10-15 04:36:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:36:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:36:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:51,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:52,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:54,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:36:54,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 04:36:54,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:36:54,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3137 [2020-10-15 04:36:54,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:36:54,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:36:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:36:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-15 04:36:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:36:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:36:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:36:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:36:54,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:54,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:36:54,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:36:54,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:36:54,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:36:54,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:36:54,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:36:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:36:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:36:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:36:54,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:36:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:36:54,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205071255] [2020-10-15 04:36:54,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:36:54,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:36:54,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035928830] [2020-10-15 04:36:54,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:36:54,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:36:54,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:36:54,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:36:54,735 INFO L87 Difference]: Start difference. First operand 221 states and 327 transitions. Second operand 4 states. [2020-10-15 04:36:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:36:55,244 INFO L93 Difference]: Finished difference Result 429 states and 642 transitions. [2020-10-15 04:36:55,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:36:55,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-15 04:36:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:36:55,249 INFO L225 Difference]: With dead ends: 429 [2020-10-15 04:36:55,249 INFO L226 Difference]: Without dead ends: 324 [2020-10-15 04:36:55,251 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 [2020-10-15 04:36:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-15 04:36:55,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2020-10-15 04:36:55,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-15 04:36:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 480 transitions. [2020-10-15 04:36:55,273 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 480 transitions. Word has length 45 [2020-10-15 04:36:55,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:36:55,274 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 480 transitions. [2020-10-15 04:36:55,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:36:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 480 transitions. [2020-10-15 04:36:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:36:55,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:36:55,279 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:36:55,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:36:55,279 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:36:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:36:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1433053055, now seen corresponding path program 1 times [2020-10-15 04:36:55,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:36:55,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369566482] [2020-10-15 04:36:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:36:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:36:55,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:55,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:55,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:57,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:36:57,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 04:36:57,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:36:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2685 [2020-10-15 04:36:57,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:36:57,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:36:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:36:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 04:36:57,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 04:36:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:36:58,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:36:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:36:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:58,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:36:58,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:36:58,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:36:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:36:58,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:36:58,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:36:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:36:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:36:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:36:58,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:36:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:36:58,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369566482] [2020-10-15 04:36:58,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:36:58,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:36:58,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191697871] [2020-10-15 04:36:58,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:36:58,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:36:58,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:36:58,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:36:58,093 INFO L87 Difference]: Start difference. First operand 324 states and 480 transitions. Second operand 4 states. [2020-10-15 04:36:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:36:58,618 INFO L93 Difference]: Finished difference Result 635 states and 948 transitions. [2020-10-15 04:36:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:36:58,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-15 04:36:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:36:58,624 INFO L225 Difference]: With dead ends: 635 [2020-10-15 04:36:58,624 INFO L226 Difference]: Without dead ends: 427 [2020-10-15 04:36:58,629 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 [2020-10-15 04:36:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-15 04:36:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2020-10-15 04:36:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-15 04:36:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 634 transitions. [2020-10-15 04:36:58,674 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 634 transitions. Word has length 63 [2020-10-15 04:36:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:36:58,675 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 634 transitions. [2020-10-15 04:36:58,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:36:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 634 transitions. [2020-10-15 04:36:58,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 04:36:58,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:36:58,687 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:36:58,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:36:58,687 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:36:58,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:36:58,688 INFO L82 PathProgramCache]: Analyzing trace with hash -465845560, now seen corresponding path program 1 times [2020-10-15 04:36:58,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:36:58,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484393724] [2020-10-15 04:36:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:36:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:36:58,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:58,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:58,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:59,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:36:59,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:03,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:03,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 04:37:03,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:37:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:37:03,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:03,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:37:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-15 04:37:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:37:03,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:03,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:03,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:03,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:03,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:37:03,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:03,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-15 04:37:03,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484393724] [2020-10-15 04:37:03,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:03,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:37:03,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575721668] [2020-10-15 04:37:03,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:37:03,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:03,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:37:03,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:37:03,837 INFO L87 Difference]: Start difference. First operand 427 states and 634 transitions. Second operand 4 states. [2020-10-15 04:37:04,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:04,318 INFO L93 Difference]: Finished difference Result 841 states and 1256 transitions. [2020-10-15 04:37:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:37:04,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-15 04:37:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:04,322 INFO L225 Difference]: With dead ends: 841 [2020-10-15 04:37:04,322 INFO L226 Difference]: Without dead ends: 530 [2020-10-15 04:37:04,324 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 [2020-10-15 04:37:04,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-15 04:37:04,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2020-10-15 04:37:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-10-15 04:37:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 789 transitions. [2020-10-15 04:37:04,339 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 789 transitions. Word has length 83 [2020-10-15 04:37:04,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:04,340 INFO L479 AbstractCegarLoop]: Abstraction has 530 states and 789 transitions. [2020-10-15 04:37:04,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:37:04,340 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 789 transitions. [2020-10-15 04:37:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 04:37:04,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:04,343 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:04,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:37:04,343 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:04,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:04,344 INFO L82 PathProgramCache]: Analyzing trace with hash -525751179, now seen corresponding path program 1 times [2020-10-15 04:37:04,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:04,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549490682] [2020-10-15 04:37:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:05,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:08,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:08,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 04:37:08,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:37:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3762 [2020-10-15 04:37:08,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:08,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:37:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-15 04:37:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:37:08,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:08,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:08,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:08,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:08,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:08,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:37:08,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:08,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:08,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-15 04:37:08,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549490682] [2020-10-15 04:37:08,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:08,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:37:08,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829572497] [2020-10-15 04:37:08,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:37:08,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:08,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:37:08,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:37:08,228 INFO L87 Difference]: Start difference. First operand 530 states and 789 transitions. Second operand 4 states. [2020-10-15 04:37:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:08,909 INFO L93 Difference]: Finished difference Result 635 states and 947 transitions. [2020-10-15 04:37:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:37:08,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-15 04:37:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:08,917 INFO L225 Difference]: With dead ends: 635 [2020-10-15 04:37:08,918 INFO L226 Difference]: Without dead ends: 633 [2020-10-15 04:37:08,922 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 [2020-10-15 04:37:08,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-10-15 04:37:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2020-10-15 04:37:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-10-15 04:37:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 945 transitions. [2020-10-15 04:37:08,951 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 945 transitions. Word has length 104 [2020-10-15 04:37:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:08,953 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 945 transitions. [2020-10-15 04:37:08,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:37:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 945 transitions. [2020-10-15 04:37:08,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-15 04:37:08,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:08,963 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2020-10-15 04:37:08,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:37:08,964 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:08,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:08,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1437549831, now seen corresponding path program 1 times [2020-10-15 04:37:08,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:08,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414314685] [2020-10-15 04:37:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:09,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:09,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:09,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:13,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:14,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:14,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 04:37:14,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:37:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 04:37:14,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:14,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:37:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-15 04:37:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 04:37:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:14,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:14,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:14,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:14,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:37:14,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:14,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:14,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:37:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-15 04:37:14,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414314685] [2020-10-15 04:37:14,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:14,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:14,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735416242] [2020-10-15 04:37:14,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:14,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:14,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:14,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:14,230 INFO L87 Difference]: Start difference. First operand 633 states and 945 transitions. Second operand 5 states. [2020-10-15 04:37:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:15,417 INFO L93 Difference]: Finished difference Result 1807 states and 2711 transitions. [2020-10-15 04:37:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:15,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-15 04:37:15,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:15,425 INFO L225 Difference]: With dead ends: 1807 [2020-10-15 04:37:15,425 INFO L226 Difference]: Without dead ends: 1187 [2020-10-15 04:37:15,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:37:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-15 04:37:15,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 783. [2020-10-15 04:37:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 783 states. [2020-10-15 04:37:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1203 transitions. [2020-10-15 04:37:15,457 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1203 transitions. Word has length 123 [2020-10-15 04:37:15,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:15,457 INFO L479 AbstractCegarLoop]: Abstraction has 783 states and 1203 transitions. [2020-10-15 04:37:15,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:15,458 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1203 transitions. [2020-10-15 04:37:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-15 04:37:15,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:15,461 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:15,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:37:15,461 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:15,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1303536325, now seen corresponding path program 1 times [2020-10-15 04:37:15,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:15,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933411063] [2020-10-15 04:37:15,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:15,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:15,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:15,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:20,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:20,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 04:37:20,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:37:20,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:37:20,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:20,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:37:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 04:37:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:37:20,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:20,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:20,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:20,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:37:20,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:20,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:37:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 133 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-15 04:37:20,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933411063] [2020-10-15 04:37:20,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:37:20,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 04:37:20,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880777069] [2020-10-15 04:37:20,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:37:20,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:20,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:37:20,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:37:20,731 INFO L87 Difference]: Start difference. First operand 783 states and 1203 transitions. Second operand 6 states. [2020-10-15 04:37:22,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:22,358 INFO L93 Difference]: Finished difference Result 2131 states and 3257 transitions. [2020-10-15 04:37:22,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:37:22,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-15 04:37:22,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:22,369 INFO L225 Difference]: With dead ends: 2131 [2020-10-15 04:37:22,369 INFO L226 Difference]: Without dead ends: 1361 [2020-10-15 04:37:22,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:37:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-10-15 04:37:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1263. [2020-10-15 04:37:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1263 states. [2020-10-15 04:37:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1956 transitions. [2020-10-15 04:37:22,414 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1956 transitions. Word has length 123 [2020-10-15 04:37:22,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:22,414 INFO L479 AbstractCegarLoop]: Abstraction has 1263 states and 1956 transitions. [2020-10-15 04:37:22,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:37:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1956 transitions. [2020-10-15 04:37:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-15 04:37:22,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:22,418 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2020-10-15 04:37:22,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:37:22,419 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:22,419 INFO L82 PathProgramCache]: Analyzing trace with hash -575594621, now seen corresponding path program 1 times [2020-10-15 04:37:22,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:22,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450004941] [2020-10-15 04:37:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:22,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:22,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:27,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:27,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 04:37:27,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:37:27,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:37:27,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:27,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:37:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-15 04:37:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 04:37:27,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:27,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:27,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:27,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:27,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:37:27,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:27,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:27,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-15 04:37:27,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450004941] [2020-10-15 04:37:27,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:27,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:27,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094627676] [2020-10-15 04:37:27,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:27,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:27,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:27,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:27,550 INFO L87 Difference]: Start difference. First operand 1263 states and 1956 transitions. Second operand 5 states. [2020-10-15 04:37:28,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:28,401 INFO L93 Difference]: Finished difference Result 2771 states and 4284 transitions. [2020-10-15 04:37:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:28,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-15 04:37:28,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:28,409 INFO L225 Difference]: With dead ends: 2771 [2020-10-15 04:37:28,409 INFO L226 Difference]: Without dead ends: 1521 [2020-10-15 04:37:28,413 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 [2020-10-15 04:37:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2020-10-15 04:37:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1383. [2020-10-15 04:37:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2020-10-15 04:37:28,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2160 transitions. [2020-10-15 04:37:28,486 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2160 transitions. Word has length 123 [2020-10-15 04:37:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:28,487 INFO L479 AbstractCegarLoop]: Abstraction has 1383 states and 2160 transitions. [2020-10-15 04:37:28,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2160 transitions. [2020-10-15 04:37:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 04:37:28,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:28,493 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2020-10-15 04:37:28,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:37:28,494 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:28,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:28,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1609686034, now seen corresponding path program 1 times [2020-10-15 04:37:28,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:28,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364779357] [2020-10-15 04:37:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:28,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:28,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:30,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:33,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:33,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 04:37:33,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:37:33,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:37:33,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:33,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:37:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-15 04:37:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 04:37:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:33,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:33,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:33,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:33,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:33,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:37:33,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:33,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-15 04:37:33,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364779357] [2020-10-15 04:37:33,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:33,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:33,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531267658] [2020-10-15 04:37:33,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:33,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:33,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:33,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:33,617 INFO L87 Difference]: Start difference. First operand 1383 states and 2160 transitions. Second operand 5 states. [2020-10-15 04:37:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:34,674 INFO L93 Difference]: Finished difference Result 3137 states and 4851 transitions. [2020-10-15 04:37:34,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:34,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-15 04:37:34,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:34,685 INFO L225 Difference]: With dead ends: 3137 [2020-10-15 04:37:34,685 INFO L226 Difference]: Without dead ends: 1767 [2020-10-15 04:37:34,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:37:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-15 04:37:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1389. [2020-10-15 04:37:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1389 states. [2020-10-15 04:37:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 2166 transitions. [2020-10-15 04:37:34,742 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 2166 transitions. Word has length 124 [2020-10-15 04:37:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:34,742 INFO L479 AbstractCegarLoop]: Abstraction has 1389 states and 2166 transitions. [2020-10-15 04:37:34,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 2166 transitions. [2020-10-15 04:37:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-15 04:37:34,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:34,747 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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] [2020-10-15 04:37:34,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:37:34,747 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash -848212577, now seen corresponding path program 1 times [2020-10-15 04:37:34,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:34,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069430020] [2020-10-15 04:37:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:34,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:34,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:39,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:39,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-15 04:37:39,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:37:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 04:37:39,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:39,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-15 04:37:39,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 04:37:39,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:39,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:39,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:39,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:39,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:37:39,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:39,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:37:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-15 04:37:39,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069430020] [2020-10-15 04:37:39,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:39,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:39,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082912174] [2020-10-15 04:37:39,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:39,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:39,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:39,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:39,903 INFO L87 Difference]: Start difference. First operand 1389 states and 2166 transitions. Second operand 5 states. [2020-10-15 04:37:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:41,044 INFO L93 Difference]: Finished difference Result 3763 states and 5864 transitions. [2020-10-15 04:37:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:41,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-15 04:37:41,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:41,057 INFO L225 Difference]: With dead ends: 3763 [2020-10-15 04:37:41,057 INFO L226 Difference]: Without dead ends: 2387 [2020-10-15 04:37:41,061 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 [2020-10-15 04:37:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2020-10-15 04:37:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 1605. [2020-10-15 04:37:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-15 04:37:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2526 transitions. [2020-10-15 04:37:41,127 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2526 transitions. Word has length 137 [2020-10-15 04:37:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:41,127 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 2526 transitions. [2020-10-15 04:37:41,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2526 transitions. [2020-10-15 04:37:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-15 04:37:41,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:41,134 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 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] [2020-10-15 04:37:41,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:37:41,135 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:41,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1915766864, now seen corresponding path program 1 times [2020-10-15 04:37:41,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:41,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875290525] [2020-10-15 04:37:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:41,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:41,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:46,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:46,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 04:37:46,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:37:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-15 04:37:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:46,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-15 04:37:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:37:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:46,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:46,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:46,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:46,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:37:46,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:46,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-15 04:37:46,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875290525] [2020-10-15 04:37:46,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:46,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:46,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244625820] [2020-10-15 04:37:46,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:46,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:46,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:46,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:46,309 INFO L87 Difference]: Start difference. First operand 1605 states and 2526 transitions. Second operand 5 states. [2020-10-15 04:37:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:47,315 INFO L93 Difference]: Finished difference Result 3919 states and 6132 transitions. [2020-10-15 04:37:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:47,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-15 04:37:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:47,328 INFO L225 Difference]: With dead ends: 3919 [2020-10-15 04:37:47,328 INFO L226 Difference]: Without dead ends: 2327 [2020-10-15 04:37:47,332 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 [2020-10-15 04:37:47,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2020-10-15 04:37:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 1617. [2020-10-15 04:37:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1617 states. [2020-10-15 04:37:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2538 transitions. [2020-10-15 04:37:47,393 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2538 transitions. Word has length 138 [2020-10-15 04:37:47,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:47,394 INFO L479 AbstractCegarLoop]: Abstraction has 1617 states and 2538 transitions. [2020-10-15 04:37:47,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:47,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2538 transitions. [2020-10-15 04:37:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-15 04:37:47,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:47,398 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:47,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:37:47,399 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:47,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:47,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2098217095, now seen corresponding path program 2 times [2020-10-15 04:37:47,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:47,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534380742] [2020-10-15 04:37:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:47,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:52,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:52,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-15 04:37:52,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:37:52,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-15 04:37:52,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:52,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-15 04:37:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 04:37:52,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:52,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:52,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:52,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:37:52,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:52,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:52,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-15 04:37:52,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534380742] [2020-10-15 04:37:52,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:52,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:52,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937893510] [2020-10-15 04:37:52,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:52,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:52,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:52,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:52,613 INFO L87 Difference]: Start difference. First operand 1617 states and 2538 transitions. Second operand 5 states. [2020-10-15 04:37:53,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:53,461 INFO L93 Difference]: Finished difference Result 4219 states and 6608 transitions. [2020-10-15 04:37:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:53,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-15 04:37:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:53,476 INFO L225 Difference]: With dead ends: 4219 [2020-10-15 04:37:53,476 INFO L226 Difference]: Without dead ends: 2615 [2020-10-15 04:37:53,483 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 [2020-10-15 04:37:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2020-10-15 04:37:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 1833. [2020-10-15 04:37:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-10-15 04:37:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2886 transitions. [2020-10-15 04:37:53,548 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2886 transitions. Word has length 151 [2020-10-15 04:37:53,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:53,548 INFO L479 AbstractCegarLoop]: Abstraction has 1833 states and 2886 transitions. [2020-10-15 04:37:53,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2886 transitions. [2020-10-15 04:37:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-15 04:37:53,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:53,554 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:53,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:37:53,555 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:53,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:53,555 INFO L82 PathProgramCache]: Analyzing trace with hash -770760248, now seen corresponding path program 2 times [2020-10-15 04:37:53,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:53,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594587664] [2020-10-15 04:37:53,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:53,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:53,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:54,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:58,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:58,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-15 04:37:58,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:37:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:37:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:58,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:37:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-15 04:37:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 04:37:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:58,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:37:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:58,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:37:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:37:58,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:37:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:37:58,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:37:58,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:37:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:37:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:37:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:37:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:37:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-15 04:37:58,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594587664] [2020-10-15 04:37:58,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:37:58,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:37:58,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445938774] [2020-10-15 04:37:58,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:37:58,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:37:58,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:37:58,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:37:58,723 INFO L87 Difference]: Start difference. First operand 1833 states and 2886 transitions. Second operand 5 states. [2020-10-15 04:37:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:37:59,661 INFO L93 Difference]: Finished difference Result 4603 states and 7224 transitions. [2020-10-15 04:37:59,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:37:59,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-15 04:37:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:37:59,677 INFO L225 Difference]: With dead ends: 4603 [2020-10-15 04:37:59,677 INFO L226 Difference]: Without dead ends: 2783 [2020-10-15 04:37:59,681 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 [2020-10-15 04:37:59,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2020-10-15 04:37:59,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 1845. [2020-10-15 04:37:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1845 states. [2020-10-15 04:37:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 2898 transitions. [2020-10-15 04:37:59,742 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 2898 transitions. Word has length 152 [2020-10-15 04:37:59,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:37:59,743 INFO L479 AbstractCegarLoop]: Abstraction has 1845 states and 2898 transitions. [2020-10-15 04:37:59,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:37:59,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 2898 transitions. [2020-10-15 04:37:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-15 04:37:59,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:37:59,748 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:37:59,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:37:59,749 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:37:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:37:59,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1869349925, now seen corresponding path program 1 times [2020-10-15 04:37:59,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:37:59,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119135584] [2020-10-15 04:37:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:37:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:37:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:59,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:37:59,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:04,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:04,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-15 04:38:04,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:04,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 04:38:04,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:04,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:04,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:38:04,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 04:38:04,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 04:38:04,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:04,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:04,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:04,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:04,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:04,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:38:04,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:04,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:04,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:38:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-15 04:38:04,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119135584] [2020-10-15 04:38:04,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:04,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:04,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724501351] [2020-10-15 04:38:04,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:04,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:04,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:04,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:04,892 INFO L87 Difference]: Start difference. First operand 1845 states and 2898 transitions. Second operand 5 states. [2020-10-15 04:38:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:05,879 INFO L93 Difference]: Finished difference Result 4055 states and 6315 transitions. [2020-10-15 04:38:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:05,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-15 04:38:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:05,890 INFO L225 Difference]: With dead ends: 4055 [2020-10-15 04:38:05,890 INFO L226 Difference]: Without dead ends: 2223 [2020-10-15 04:38:05,894 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 [2020-10-15 04:38:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-10-15 04:38:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 1845. [2020-10-15 04:38:05,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1845 states. [2020-10-15 04:38:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 2892 transitions. [2020-10-15 04:38:05,946 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 2892 transitions. Word has length 152 [2020-10-15 04:38:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:05,947 INFO L479 AbstractCegarLoop]: Abstraction has 1845 states and 2892 transitions. [2020-10-15 04:38:05,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 2892 transitions. [2020-10-15 04:38:05,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-15 04:38:05,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:05,952 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:05,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:38:05,952 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:05,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:05,953 INFO L82 PathProgramCache]: Analyzing trace with hash -142204963, now seen corresponding path program 1 times [2020-10-15 04:38:05,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:05,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752020797] [2020-10-15 04:38:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:07,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:11,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:11,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-15 04:38:11,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:11,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 04:38:11,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:11,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 04:38:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 04:38:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 04:38:11,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:11,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:11,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:11,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:11,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:11,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:11,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:11,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:11,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 200 proven. 49 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-15 04:38:11,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752020797] [2020-10-15 04:38:11,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:38:11,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 04:38:11,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902877261] [2020-10-15 04:38:11,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:38:11,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:11,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:38:11,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:38:11,213 INFO L87 Difference]: Start difference. First operand 1845 states and 2892 transitions. Second operand 7 states. [2020-10-15 04:38:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:12,571 INFO L93 Difference]: Finished difference Result 4489 states and 7013 transitions. [2020-10-15 04:38:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:38:12,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-15 04:38:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:12,584 INFO L225 Difference]: With dead ends: 4489 [2020-10-15 04:38:12,584 INFO L226 Difference]: Without dead ends: 2657 [2020-10-15 04:38:12,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:38:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2020-10-15 04:38:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2565. [2020-10-15 04:38:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2565 states. [2020-10-15 04:38:12,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 4029 transitions. [2020-10-15 04:38:12,657 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 4029 transitions. Word has length 152 [2020-10-15 04:38:12,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:12,657 INFO L479 AbstractCegarLoop]: Abstraction has 2565 states and 4029 transitions. [2020-10-15 04:38:12,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:38:12,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 4029 transitions. [2020-10-15 04:38:12,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-15 04:38:12,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:12,664 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:12,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:38:12,664 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:12,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1171564261, now seen corresponding path program 1 times [2020-10-15 04:38:12,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:12,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944765358] [2020-10-15 04:38:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:12,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:12,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:17,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:17,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-15 04:38:17,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:38:17,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:38:17,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:17,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:17,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-15 04:38:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:38:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:17,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:17,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:17,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:17,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:17,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:17,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:17,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-15 04:38:17,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944765358] [2020-10-15 04:38:17,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:17,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:17,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347998471] [2020-10-15 04:38:17,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:17,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:17,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:17,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:17,786 INFO L87 Difference]: Start difference. First operand 2565 states and 4029 transitions. Second operand 5 states. [2020-10-15 04:38:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:18,725 INFO L93 Difference]: Finished difference Result 6487 states and 10166 transitions. [2020-10-15 04:38:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:18,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-15 04:38:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:18,745 INFO L225 Difference]: With dead ends: 6487 [2020-10-15 04:38:18,745 INFO L226 Difference]: Without dead ends: 3935 [2020-10-15 04:38:18,751 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 [2020-10-15 04:38:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2020-10-15 04:38:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2853. [2020-10-15 04:38:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-15 04:38:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4497 transitions. [2020-10-15 04:38:18,829 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4497 transitions. Word has length 152 [2020-10-15 04:38:18,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:18,829 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4497 transitions. [2020-10-15 04:38:18,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4497 transitions. [2020-10-15 04:38:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-15 04:38:18,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:18,836 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:18,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:38:18,837 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:18,837 INFO L82 PathProgramCache]: Analyzing trace with hash -825413690, now seen corresponding path program 1 times [2020-10-15 04:38:18,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:18,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239918597] [2020-10-15 04:38:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:18,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:18,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:23,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:23,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-15 04:38:23,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 04:38:23,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:23,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-15 04:38:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 04:38:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:23,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:23,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:23,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:23,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:23,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-15 04:38:23,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239918597] [2020-10-15 04:38:23,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:23,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:23,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281179396] [2020-10-15 04:38:23,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:23,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:23,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:23,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:23,978 INFO L87 Difference]: Start difference. First operand 2853 states and 4497 transitions. Second operand 5 states. [2020-10-15 04:38:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:24,893 INFO L93 Difference]: Finished difference Result 6775 states and 10616 transitions. [2020-10-15 04:38:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:24,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-15 04:38:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:24,908 INFO L225 Difference]: With dead ends: 6775 [2020-10-15 04:38:24,908 INFO L226 Difference]: Without dead ends: 3935 [2020-10-15 04:38:24,913 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 [2020-10-15 04:38:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2020-10-15 04:38:24,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2997. [2020-10-15 04:38:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2997 states. [2020-10-15 04:38:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 4731 transitions. [2020-10-15 04:38:24,995 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 4731 transitions. Word has length 153 [2020-10-15 04:38:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:24,996 INFO L479 AbstractCegarLoop]: Abstraction has 2997 states and 4731 transitions. [2020-10-15 04:38:24,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 4731 transitions. [2020-10-15 04:38:25,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-15 04:38:25,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:25,004 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:25,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:38:25,004 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:25,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:25,005 INFO L82 PathProgramCache]: Analyzing trace with hash 177293619, now seen corresponding path program 1 times [2020-10-15 04:38:25,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:25,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516239736] [2020-10-15 04:38:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:25,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:25,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:25,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:29,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:30,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:30,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-15 04:38:30,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:38:30,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:38:30,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:30,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-15 04:38:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 04:38:30,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:30,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:30,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:30,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:30,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-15 04:38:30,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516239736] [2020-10-15 04:38:30,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:30,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:30,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39796621] [2020-10-15 04:38:30,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:30,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:30,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:30,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:30,134 INFO L87 Difference]: Start difference. First operand 2997 states and 4731 transitions. Second operand 5 states. [2020-10-15 04:38:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:30,918 INFO L93 Difference]: Finished difference Result 7441 states and 11723 transitions. [2020-10-15 04:38:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:30,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-15 04:38:30,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:30,928 INFO L225 Difference]: With dead ends: 7441 [2020-10-15 04:38:30,929 INFO L226 Difference]: Without dead ends: 4457 [2020-10-15 04:38:30,934 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 [2020-10-15 04:38:30,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2020-10-15 04:38:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3417. [2020-10-15 04:38:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3417 states. [2020-10-15 04:38:31,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 5475 transitions. [2020-10-15 04:38:31,024 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 5475 transitions. Word has length 154 [2020-10-15 04:38:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:31,024 INFO L479 AbstractCegarLoop]: Abstraction has 3417 states and 5475 transitions. [2020-10-15 04:38:31,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 5475 transitions. [2020-10-15 04:38:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-15 04:38:31,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:31,033 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:31,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:38:31,033 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:31,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:31,033 INFO L82 PathProgramCache]: Analyzing trace with hash 517778080, now seen corresponding path program 1 times [2020-10-15 04:38:31,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:31,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741216026] [2020-10-15 04:38:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:31,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:31,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:31,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:34,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:36,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:36,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-15 04:38:36,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:38:36,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-15 04:38:36,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:36,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:36,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:36,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-15 04:38:36,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 04:38:36,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:36,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:36,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:36,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:36,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:36,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:36,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:36,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-15 04:38:36,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741216026] [2020-10-15 04:38:36,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:36,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:36,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981147917] [2020-10-15 04:38:36,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:36,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:36,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:36,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:36,162 INFO L87 Difference]: Start difference. First operand 3417 states and 5475 transitions. Second operand 5 states. [2020-10-15 04:38:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:37,133 INFO L93 Difference]: Finished difference Result 7901 states and 12577 transitions. [2020-10-15 04:38:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:37,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-15 04:38:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:37,145 INFO L225 Difference]: With dead ends: 7901 [2020-10-15 04:38:37,145 INFO L226 Difference]: Without dead ends: 4497 [2020-10-15 04:38:37,151 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 [2020-10-15 04:38:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4497 states. [2020-10-15 04:38:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4497 to 3435. [2020-10-15 04:38:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3435 states. [2020-10-15 04:38:37,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 5511 transitions. [2020-10-15 04:38:37,241 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 5511 transitions. Word has length 154 [2020-10-15 04:38:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:37,242 INFO L479 AbstractCegarLoop]: Abstraction has 3435 states and 5511 transitions. [2020-10-15 04:38:37,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 5511 transitions. [2020-10-15 04:38:37,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-15 04:38:37,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:37,249 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:38:37,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:38:37,250 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:37,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:37,250 INFO L82 PathProgramCache]: Analyzing trace with hash -180637185, now seen corresponding path program 1 times [2020-10-15 04:38:37,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:37,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773336381] [2020-10-15 04:38:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:37,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:37,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:38,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:42,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:42,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 04:38:42,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:38:42,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:42,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:38:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-15 04:38:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 04:38:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:42,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:42,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:42,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:42,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:38:42,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:42,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:42,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-15 04:38:42,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773336381] [2020-10-15 04:38:42,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:42,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:42,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429265886] [2020-10-15 04:38:42,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:42,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:42,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:42,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:42,364 INFO L87 Difference]: Start difference. First operand 3435 states and 5511 transitions. Second operand 5 states. [2020-10-15 04:38:43,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:43,341 INFO L93 Difference]: Finished difference Result 8261 states and 13189 transitions. [2020-10-15 04:38:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:43,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-15 04:38:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:43,353 INFO L225 Difference]: With dead ends: 8261 [2020-10-15 04:38:43,353 INFO L226 Difference]: Without dead ends: 4839 [2020-10-15 04:38:43,364 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 [2020-10-15 04:38:43,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2020-10-15 04:38:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 3759. [2020-10-15 04:38:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3759 states. [2020-10-15 04:38:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 6051 transitions. [2020-10-15 04:38:43,452 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 6051 transitions. Word has length 157 [2020-10-15 04:38:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:43,453 INFO L479 AbstractCegarLoop]: Abstraction has 3759 states and 6051 transitions. [2020-10-15 04:38:43,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 6051 transitions. [2020-10-15 04:38:43,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-15 04:38:43,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:43,492 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 4, 4, 4, 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] [2020-10-15 04:38:43,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:38:43,493 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:43,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:43,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1964066006, now seen corresponding path program 1 times [2020-10-15 04:38:43,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:43,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792423742] [2020-10-15 04:38:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:43,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:44,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:48,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:48,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-15 04:38:48,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:38:48,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:48,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:38:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-15 04:38:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 04:38:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:48,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:48,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:48,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:48,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:48,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:38:48,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:48,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-15 04:38:48,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792423742] [2020-10-15 04:38:48,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:48,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:48,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145688300] [2020-10-15 04:38:48,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:48,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:48,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:48,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:48,615 INFO L87 Difference]: Start difference. First operand 3759 states and 6051 transitions. Second operand 5 states. [2020-10-15 04:38:49,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:49,647 INFO L93 Difference]: Finished difference Result 7913 states and 12669 transitions. [2020-10-15 04:38:49,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:49,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-15 04:38:49,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:49,655 INFO L225 Difference]: With dead ends: 7913 [2020-10-15 04:38:49,655 INFO L226 Difference]: Without dead ends: 4167 [2020-10-15 04:38:49,662 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 [2020-10-15 04:38:49,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2020-10-15 04:38:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3771. [2020-10-15 04:38:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2020-10-15 04:38:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 6069 transitions. [2020-10-15 04:38:49,758 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 6069 transitions. Word has length 161 [2020-10-15 04:38:49,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:49,759 INFO L479 AbstractCegarLoop]: Abstraction has 3771 states and 6069 transitions. [2020-10-15 04:38:49,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 6069 transitions. [2020-10-15 04:38:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-15 04:38:49,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:49,767 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 4, 4, 4, 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] [2020-10-15 04:38:49,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:38:49,767 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:49,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:49,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1214493519, now seen corresponding path program 1 times [2020-10-15 04:38:49,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:49,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956156931] [2020-10-15 04:38:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:49,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:54,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:54,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 04:38:54,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:38:54,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:38:54,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:54,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:38:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 04:38:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 04:38:54,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:38:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:54,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:38:54,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:38:54,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:38:54,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:38:54,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:38:54,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:38:54,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:38:54,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:38:54,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:38:54,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:38:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-15 04:38:54,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956156931] [2020-10-15 04:38:54,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:38:54,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:38:54,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963218477] [2020-10-15 04:38:54,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:38:54,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:38:54,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:38:54,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:38:54,901 INFO L87 Difference]: Start difference. First operand 3771 states and 6069 transitions. Second operand 5 states. [2020-10-15 04:38:55,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:38:55,850 INFO L93 Difference]: Finished difference Result 7895 states and 12641 transitions. [2020-10-15 04:38:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:38:55,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-15 04:38:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:38:55,857 INFO L225 Difference]: With dead ends: 7895 [2020-10-15 04:38:55,857 INFO L226 Difference]: Without dead ends: 4137 [2020-10-15 04:38:55,863 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 [2020-10-15 04:38:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2020-10-15 04:38:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3771. [2020-10-15 04:38:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2020-10-15 04:38:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 6063 transitions. [2020-10-15 04:38:55,959 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 6063 transitions. Word has length 162 [2020-10-15 04:38:55,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:38:55,959 INFO L479 AbstractCegarLoop]: Abstraction has 3771 states and 6063 transitions. [2020-10-15 04:38:55,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:38:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 6063 transitions. [2020-10-15 04:38:55,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-15 04:38:55,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:38:55,968 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 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] [2020-10-15 04:38:55,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:38:55,971 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:38:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:38:55,971 INFO L82 PathProgramCache]: Analyzing trace with hash -538906717, now seen corresponding path program 1 times [2020-10-15 04:38:55,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:38:55,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6686721] [2020-10-15 04:38:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:38:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:38:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:56,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:38:56,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:01,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:01,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-15 04:39:01,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:39:01,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 04:39:01,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:01,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 04:39:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:39:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-15 04:39:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:01,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:01,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:01,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:01,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:01,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:01,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 224 proven. 126 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-15 04:39:02,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6686721] [2020-10-15 04:39:02,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:39:02,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 04:39:02,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278750089] [2020-10-15 04:39:02,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 04:39:02,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:02,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 04:39:02,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:39:02,010 INFO L87 Difference]: Start difference. First operand 3771 states and 6063 transitions. Second operand 14 states. [2020-10-15 04:39:06,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:06,808 INFO L93 Difference]: Finished difference Result 15985 states and 25626 transitions. [2020-10-15 04:39:06,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:39:06,808 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 174 [2020-10-15 04:39:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:06,823 INFO L225 Difference]: With dead ends: 15985 [2020-10-15 04:39:06,823 INFO L226 Difference]: Without dead ends: 12227 [2020-10-15 04:39:06,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-10-15 04:39:06,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12227 states. [2020-10-15 04:39:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12227 to 8411. [2020-10-15 04:39:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8411 states. [2020-10-15 04:39:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8411 states to 8411 states and 13540 transitions. [2020-10-15 04:39:07,087 INFO L78 Accepts]: Start accepts. Automaton has 8411 states and 13540 transitions. Word has length 174 [2020-10-15 04:39:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:07,088 INFO L479 AbstractCegarLoop]: Abstraction has 8411 states and 13540 transitions. [2020-10-15 04:39:07,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 04:39:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8411 states and 13540 transitions. [2020-10-15 04:39:07,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-15 04:39:07,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:07,104 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 4, 4, 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] [2020-10-15 04:39:07,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:39:07,104 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:07,105 INFO L82 PathProgramCache]: Analyzing trace with hash -696024007, now seen corresponding path program 1 times [2020-10-15 04:39:07,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:07,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869741066] [2020-10-15 04:39:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:07,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:07,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:10,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:12,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:12,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-15 04:39:12,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:39:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:39:12,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:12,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:39:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:39:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-15 04:39:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:12,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:12,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:12,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:12,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:12,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:12,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:12,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:12,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:12,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 114 proven. 69 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-15 04:39:12,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869741066] [2020-10-15 04:39:12,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:39:12,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:39:12,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114311077] [2020-10-15 04:39:12,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:39:12,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:12,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:39:12,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:39:12,464 INFO L87 Difference]: Start difference. First operand 8411 states and 13540 transitions. Second operand 9 states. [2020-10-15 04:39:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:14,022 INFO L93 Difference]: Finished difference Result 17233 states and 27667 transitions. [2020-10-15 04:39:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:39:14,023 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2020-10-15 04:39:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:14,033 INFO L225 Difference]: With dead ends: 17233 [2020-10-15 04:39:14,033 INFO L226 Difference]: Without dead ends: 8835 [2020-10-15 04:39:14,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:39:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8835 states. [2020-10-15 04:39:14,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8835 to 8406. [2020-10-15 04:39:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8406 states. [2020-10-15 04:39:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8406 states to 8406 states and 13541 transitions. [2020-10-15 04:39:14,213 INFO L78 Accepts]: Start accepts. Automaton has 8406 states and 13541 transitions. Word has length 174 [2020-10-15 04:39:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:14,214 INFO L479 AbstractCegarLoop]: Abstraction has 8406 states and 13541 transitions. [2020-10-15 04:39:14,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:39:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 8406 states and 13541 transitions. [2020-10-15 04:39:14,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-15 04:39:14,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:14,230 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 6, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-15 04:39:14,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:39:14,230 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:14,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:14,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1096469089, now seen corresponding path program 1 times [2020-10-15 04:39:14,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:14,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409990960] [2020-10-15 04:39:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:14,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:19,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:19,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-15 04:39:19,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:39:19,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:39:19,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:19,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-15 04:39:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 04:39:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:19,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:19,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:19,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:19,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:19,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:19,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:19,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-15 04:39:19,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409990960] [2020-10-15 04:39:19,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:19,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:19,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618252836] [2020-10-15 04:39:19,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:19,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:19,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:19,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:19,352 INFO L87 Difference]: Start difference. First operand 8406 states and 13541 transitions. Second operand 5 states. [2020-10-15 04:39:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:20,444 INFO L93 Difference]: Finished difference Result 18720 states and 29932 transitions. [2020-10-15 04:39:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:20,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-15 04:39:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:20,457 INFO L225 Difference]: With dead ends: 18720 [2020-10-15 04:39:20,457 INFO L226 Difference]: Without dead ends: 10676 [2020-10-15 04:39:20,466 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 [2020-10-15 04:39:20,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10676 states. [2020-10-15 04:39:20,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10676 to 8546. [2020-10-15 04:39:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8546 states. [2020-10-15 04:39:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8546 states to 8546 states and 13795 transitions. [2020-10-15 04:39:20,625 INFO L78 Accepts]: Start accepts. Automaton has 8546 states and 13795 transitions. Word has length 175 [2020-10-15 04:39:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:20,625 INFO L479 AbstractCegarLoop]: Abstraction has 8546 states and 13795 transitions. [2020-10-15 04:39:20,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 8546 states and 13795 transitions. [2020-10-15 04:39:20,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 04:39:20,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:20,639 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 6, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-15 04:39:20,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:39:20,639 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:20,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1902133724, now seen corresponding path program 1 times [2020-10-15 04:39:20,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:20,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069044943] [2020-10-15 04:39:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:20,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:20,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:20,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:23,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:25,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:25,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-15 04:39:25,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:39:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:39:25,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:25,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-15 04:39:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 04:39:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:25,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:25,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:25,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:25,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:25,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:25,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:25,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:25,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-10-15 04:39:25,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069044943] [2020-10-15 04:39:25,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:25,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:25,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148636223] [2020-10-15 04:39:25,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:25,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:25,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:25,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:25,828 INFO L87 Difference]: Start difference. First operand 8546 states and 13795 transitions. Second operand 5 states. [2020-10-15 04:39:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:26,940 INFO L93 Difference]: Finished difference Result 18860 states and 30148 transitions. [2020-10-15 04:39:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:26,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-15 04:39:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:26,953 INFO L225 Difference]: With dead ends: 18860 [2020-10-15 04:39:26,953 INFO L226 Difference]: Without dead ends: 10676 [2020-10-15 04:39:26,963 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 [2020-10-15 04:39:26,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10676 states. [2020-10-15 04:39:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10676 to 8546. [2020-10-15 04:39:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8546 states. [2020-10-15 04:39:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8546 states to 8546 states and 13757 transitions. [2020-10-15 04:39:27,126 INFO L78 Accepts]: Start accepts. Automaton has 8546 states and 13757 transitions. Word has length 176 [2020-10-15 04:39:27,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:27,126 INFO L479 AbstractCegarLoop]: Abstraction has 8546 states and 13757 transitions. [2020-10-15 04:39:27,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 8546 states and 13757 transitions. [2020-10-15 04:39:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 04:39:27,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:27,134 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 6, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-15 04:39:27,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:39:27,134 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:27,134 INFO L82 PathProgramCache]: Analyzing trace with hash 827186086, now seen corresponding path program 1 times [2020-10-15 04:39:27,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:27,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556560107] [2020-10-15 04:39:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:27,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:27,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:27,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:28,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:32,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:32,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-15 04:39:32,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:39:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:39:32,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:32,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:32,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:32,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-15 04:39:32,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 04:39:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:32,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:32,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:32,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:32,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:32,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:32,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:32,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:32,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-15 04:39:32,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556560107] [2020-10-15 04:39:32,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:32,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:32,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741231016] [2020-10-15 04:39:32,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:32,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:32,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:32,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:32,280 INFO L87 Difference]: Start difference. First operand 8546 states and 13757 transitions. Second operand 5 states. [2020-10-15 04:39:33,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:33,406 INFO L93 Difference]: Finished difference Result 18746 states and 29940 transitions. [2020-10-15 04:39:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:33,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-15 04:39:33,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:33,421 INFO L225 Difference]: With dead ends: 18746 [2020-10-15 04:39:33,421 INFO L226 Difference]: Without dead ends: 10562 [2020-10-15 04:39:33,431 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 [2020-10-15 04:39:33,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10562 states. [2020-10-15 04:39:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10562 to 8596. [2020-10-15 04:39:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-15 04:39:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 13807 transitions. [2020-10-15 04:39:33,713 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 13807 transitions. Word has length 176 [2020-10-15 04:39:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:33,714 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 13807 transitions. [2020-10-15 04:39:33,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 13807 transitions. [2020-10-15 04:39:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-15 04:39:33,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:33,722 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 6, 4, 4, 4, 3, 3, 3, 3, 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] [2020-10-15 04:39:33,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:39:33,722 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:33,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1072841949, now seen corresponding path program 2 times [2020-10-15 04:39:33,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:33,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430383118] [2020-10-15 04:39:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:33,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:33,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:33,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:33,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:36,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:36,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:38,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:38,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-15 04:39:38,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:39:38,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:39:38,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:38,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:38,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:38,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-15 04:39:38,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 04:39:38,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:38,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:38,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:38,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:38,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:38,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:38,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:38,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-10-15 04:39:38,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430383118] [2020-10-15 04:39:38,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:38,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:38,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482887095] [2020-10-15 04:39:38,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:38,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:38,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:38,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:38,841 INFO L87 Difference]: Start difference. First operand 8596 states and 13807 transitions. Second operand 5 states. [2020-10-15 04:39:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:39,911 INFO L93 Difference]: Finished difference Result 18606 states and 29700 transitions. [2020-10-15 04:39:39,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:39,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-15 04:39:39,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:39,923 INFO L225 Difference]: With dead ends: 18606 [2020-10-15 04:39:39,923 INFO L226 Difference]: Without dead ends: 10372 [2020-10-15 04:39:39,930 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 [2020-10-15 04:39:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10372 states. [2020-10-15 04:39:40,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10372 to 8596. [2020-10-15 04:39:40,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-15 04:39:40,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 13769 transitions. [2020-10-15 04:39:40,105 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 13769 transitions. Word has length 177 [2020-10-15 04:39:40,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:40,105 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 13769 transitions. [2020-10-15 04:39:40,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:40,106 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 13769 transitions. [2020-10-15 04:39:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-15 04:39:40,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:40,114 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:40,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:39:40,114 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:40,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:40,114 INFO L82 PathProgramCache]: Analyzing trace with hash 2103496608, now seen corresponding path program 1 times [2020-10-15 04:39:40,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:40,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670703367] [2020-10-15 04:39:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:40,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:42,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:42,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-15 04:39:42,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:39:42,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2246 [2020-10-15 04:39:42,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:42,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-15 04:39:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 04:39:42,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:42,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:42,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:42,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:42,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:42,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:42,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:42,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:42,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-15 04:39:42,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670703367] [2020-10-15 04:39:42,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:42,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:42,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044633057] [2020-10-15 04:39:42,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:42,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:42,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:42,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:42,454 INFO L87 Difference]: Start difference. First operand 8596 states and 13769 transitions. Second operand 5 states. [2020-10-15 04:39:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:43,532 INFO L93 Difference]: Finished difference Result 18980 states and 30233 transitions. [2020-10-15 04:39:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:43,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-15 04:39:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:43,543 INFO L225 Difference]: With dead ends: 18980 [2020-10-15 04:39:43,544 INFO L226 Difference]: Without dead ends: 10746 [2020-10-15 04:39:43,552 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 [2020-10-15 04:39:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10746 states. [2020-10-15 04:39:43,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10746 to 8596. [2020-10-15 04:39:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-15 04:39:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 13729 transitions. [2020-10-15 04:39:43,732 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 13729 transitions. Word has length 178 [2020-10-15 04:39:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:43,732 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 13729 transitions. [2020-10-15 04:39:43,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 13729 transitions. [2020-10-15 04:39:43,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-15 04:39:43,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:43,742 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:43,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:39:43,742 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:43,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1670647483, now seen corresponding path program 1 times [2020-10-15 04:39:43,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:43,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966787233] [2020-10-15 04:39:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:43,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:44,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:48,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:48,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-15 04:39:48,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:39:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:39:48,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:48,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:39:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-15 04:39:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 04:39:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:48,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:48,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:48,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:48,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:39:48,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:48,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-15 04:39:48,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966787233] [2020-10-15 04:39:48,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:39:48,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:39:48,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265812737] [2020-10-15 04:39:48,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:39:48,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:48,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:39:48,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:39:48,857 INFO L87 Difference]: Start difference. First operand 8596 states and 13729 transitions. Second operand 5 states. [2020-10-15 04:39:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:39:49,940 INFO L93 Difference]: Finished difference Result 19329 states and 30714 transitions. [2020-10-15 04:39:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:39:49,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-15 04:39:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:39:49,951 INFO L225 Difference]: With dead ends: 19329 [2020-10-15 04:39:49,951 INFO L226 Difference]: Without dead ends: 10746 [2020-10-15 04:39:49,959 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 [2020-10-15 04:39:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10746 states. [2020-10-15 04:39:50,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10746 to 8636. [2020-10-15 04:39:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8636 states. [2020-10-15 04:39:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 13769 transitions. [2020-10-15 04:39:50,206 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 13769 transitions. Word has length 181 [2020-10-15 04:39:50,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:39:50,206 INFO L479 AbstractCegarLoop]: Abstraction has 8636 states and 13769 transitions. [2020-10-15 04:39:50,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:39:50,206 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 13769 transitions. [2020-10-15 04:39:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-15 04:39:50,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:39:50,216 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:39:50,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:39:50,216 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:39:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:39:50,217 INFO L82 PathProgramCache]: Analyzing trace with hash 492550541, now seen corresponding path program 1 times [2020-10-15 04:39:50,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:39:50,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107549130] [2020-10-15 04:39:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:39:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:50,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:51,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:55,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:55,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-15 04:39:55,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:39:55,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:39:55,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:55,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:39:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:39:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-15 04:39:55,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:39:55,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:39:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:39:55,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:39:55,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:39:55,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:39:55,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:39:55,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:39:55,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:39:55,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:39:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:39:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:39:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:39:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:39:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 206 proven. 103 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-15 04:39:55,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107549130] [2020-10-15 04:39:55,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:39:55,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:39:55,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739495601] [2020-10-15 04:39:55,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:39:55,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:39:55,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:39:55,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:39:55,815 INFO L87 Difference]: Start difference. First operand 8636 states and 13769 transitions. Second operand 11 states. [2020-10-15 04:40:00,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:00,380 INFO L93 Difference]: Finished difference Result 23942 states and 38066 transitions. [2020-10-15 04:40:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 04:40:00,381 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 181 [2020-10-15 04:40:00,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:00,401 INFO L225 Difference]: With dead ends: 23942 [2020-10-15 04:40:00,402 INFO L226 Difference]: Without dead ends: 20076 [2020-10-15 04:40:00,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:40:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20076 states. [2020-10-15 04:40:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20076 to 15992. [2020-10-15 04:40:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15992 states. [2020-10-15 04:40:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15992 states to 15992 states and 25572 transitions. [2020-10-15 04:40:00,760 INFO L78 Accepts]: Start accepts. Automaton has 15992 states and 25572 transitions. Word has length 181 [2020-10-15 04:40:00,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:00,760 INFO L479 AbstractCegarLoop]: Abstraction has 15992 states and 25572 transitions. [2020-10-15 04:40:00,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:40:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 15992 states and 25572 transitions. [2020-10-15 04:40:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-15 04:40:00,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:00,778 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 4, 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] [2020-10-15 04:40:00,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:40:00,779 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:00,779 INFO L82 PathProgramCache]: Analyzing trace with hash -899172422, now seen corresponding path program 1 times [2020-10-15 04:40:00,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:00,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868930015] [2020-10-15 04:40:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:05,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-15 04:40:05,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:40:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:40:05,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:05,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:40:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-15 04:40:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 04:40:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:05,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:05,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:05,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:05,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:05,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:05,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:05,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:05,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-15 04:40:05,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868930015] [2020-10-15 04:40:05,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:05,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:40:05,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452640238] [2020-10-15 04:40:05,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:40:05,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:05,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:40:05,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:40:05,900 INFO L87 Difference]: Start difference. First operand 15992 states and 25572 transitions. Second operand 5 states. [2020-10-15 04:40:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:07,192 INFO L93 Difference]: Finished difference Result 34658 states and 55158 transitions. [2020-10-15 04:40:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:40:07,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-15 04:40:07,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:07,212 INFO L225 Difference]: With dead ends: 34658 [2020-10-15 04:40:07,212 INFO L226 Difference]: Without dead ends: 19835 [2020-10-15 04:40:07,226 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 [2020-10-15 04:40:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19835 states. [2020-10-15 04:40:07,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19835 to 14567. [2020-10-15 04:40:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14567 states. [2020-10-15 04:40:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14567 states to 14567 states and 23172 transitions. [2020-10-15 04:40:07,547 INFO L78 Accepts]: Start accepts. Automaton has 14567 states and 23172 transitions. Word has length 182 [2020-10-15 04:40:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:07,548 INFO L479 AbstractCegarLoop]: Abstraction has 14567 states and 23172 transitions. [2020-10-15 04:40:07,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:40:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 14567 states and 23172 transitions. [2020-10-15 04:40:07,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-15 04:40:07,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:07,559 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:07,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 04:40:07,559 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:07,560 INFO L82 PathProgramCache]: Analyzing trace with hash 640033365, now seen corresponding path program 1 times [2020-10-15 04:40:07,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:07,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544174782] [2020-10-15 04:40:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:07,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:07,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:07,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:08,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:09,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:12,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:12,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-15 04:40:12,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:40:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:40:12,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:12,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:40:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:40:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-15 04:40:12,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:12,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:12,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:12,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:12,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:12,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:12,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:12,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 174 proven. 64 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-15 04:40:12,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544174782] [2020-10-15 04:40:12,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:40:12,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:40:12,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959478771] [2020-10-15 04:40:12,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:40:12,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:12,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:40:12,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:40:12,793 INFO L87 Difference]: Start difference. First operand 14567 states and 23172 transitions. Second operand 9 states. [2020-10-15 04:40:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:15,304 INFO L93 Difference]: Finished difference Result 24065 states and 38139 transitions. [2020-10-15 04:40:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:40:15,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-10-15 04:40:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:15,325 INFO L225 Difference]: With dead ends: 24065 [2020-10-15 04:40:15,325 INFO L226 Difference]: Without dead ends: 20541 [2020-10-15 04:40:15,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:40:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20541 states. [2020-10-15 04:40:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20541 to 19199. [2020-10-15 04:40:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19199 states. [2020-10-15 04:40:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19199 states to 19199 states and 30540 transitions. [2020-10-15 04:40:15,751 INFO L78 Accepts]: Start accepts. Automaton has 19199 states and 30540 transitions. Word has length 182 [2020-10-15 04:40:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:15,752 INFO L479 AbstractCegarLoop]: Abstraction has 19199 states and 30540 transitions. [2020-10-15 04:40:15,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:40:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 19199 states and 30540 transitions. [2020-10-15 04:40:15,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-15 04:40:15,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:15,767 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:15,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 04:40:15,767 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:15,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:15,767 INFO L82 PathProgramCache]: Analyzing trace with hash 249870553, now seen corresponding path program 1 times [2020-10-15 04:40:15,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:15,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137794028] [2020-10-15 04:40:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:15,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:16,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:20,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:20,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:20,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-15 04:40:20,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:40:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-15 04:40:20,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:20,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:40:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:40:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 04:40:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:21,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:21,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:21,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:21,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:21,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:40:21,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:21,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:21,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:21,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:21,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-15 04:40:21,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137794028] [2020-10-15 04:40:21,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:21,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:40:21,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178530804] [2020-10-15 04:40:21,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:40:21,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:21,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:40:21,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:40:21,190 INFO L87 Difference]: Start difference. First operand 19199 states and 30540 transitions. Second operand 9 states. [2020-10-15 04:40:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:23,706 INFO L93 Difference]: Finished difference Result 28763 states and 45571 transitions. [2020-10-15 04:40:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:40:23,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 183 [2020-10-15 04:40:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:23,728 INFO L225 Difference]: With dead ends: 28763 [2020-10-15 04:40:23,729 INFO L226 Difference]: Without dead ends: 20607 [2020-10-15 04:40:23,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:40:23,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20607 states. [2020-10-15 04:40:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20607 to 18023. [2020-10-15 04:40:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18023 states. [2020-10-15 04:40:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18023 states to 18023 states and 28665 transitions. [2020-10-15 04:40:24,130 INFO L78 Accepts]: Start accepts. Automaton has 18023 states and 28665 transitions. Word has length 183 [2020-10-15 04:40:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:24,130 INFO L479 AbstractCegarLoop]: Abstraction has 18023 states and 28665 transitions. [2020-10-15 04:40:24,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:40:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 18023 states and 28665 transitions. [2020-10-15 04:40:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:40:24,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:24,144 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:24,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 04:40:24,145 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:24,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:24,145 INFO L82 PathProgramCache]: Analyzing trace with hash 473643379, now seen corresponding path program 1 times [2020-10-15 04:40:24,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:24,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990206376] [2020-10-15 04:40:24,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:24,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking...