/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 SingleStatement --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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:13:10,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:13:10,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:13:10,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:13:11,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:13:11,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:13:11,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:13:11,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:13:11,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:13:11,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:13:11,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:13:11,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:13:11,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:13:11,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:13:11,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:13:11,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:13:11,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:13:11,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:13:11,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:13:11,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:13:11,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:13:11,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:13:11,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:13:11,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:13:11,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:13:11,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:13:11,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:13:11,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:13:11,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:13:11,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:13:11,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:13:11,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:13:11,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:13:11,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:13:11,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:13:11,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:13:11,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:13:11,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:13:11,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:13:11,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:13:11,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:13:11,075 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 [2020-09-25 03:13:11,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:13:11,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:13:11,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:13:11,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:13:11,123 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:13:11,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:13:11,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:13:11,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:13:11,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:13:11,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:13:11,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:13:11,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:13:11,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:13:11,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:13:11,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:13:11,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:13:11,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:13:11,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:13:11,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:13:11,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:13:11,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:13:11,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:13:11,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:13:11,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:13:11,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:13:11,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:13:11,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:13:11,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:13:11,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:13:11,130 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 -> SingleStatement 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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=true; [2020-09-25 03:13:11,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:13:11,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:13:11,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:13:11,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:13:11,612 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:13:11,613 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 03:13:11,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea4db13ad/fddd3c756d4a4708810c188810a725aa/FLAG54e3b3153 [2020-09-25 03:13:12,323 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:13:12,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 03:13:12,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea4db13ad/fddd3c756d4a4708810c188810a725aa/FLAG54e3b3153 [2020-09-25 03:13:12,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea4db13ad/fddd3c756d4a4708810c188810a725aa [2020-09-25 03:13:12,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:13:12,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:13:12,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:12,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:13:12,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:13:12,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:12" (1/1) ... [2020-09-25 03:13:12,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:12, skipping insertion in model container [2020-09-25 03:13:12,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:12" (1/1) ... [2020-09-25 03:13:12,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:13:12,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:13:13,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:13,027 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:13:13,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:13,219 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:13:13,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:13 WrapperNode [2020-09-25 03:13:13,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:13,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:13:13,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:13:13,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:13:13,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:13" (1/1) ... [2020-09-25 03:13:13,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:13" (1/1) ... [2020-09-25 03:13:13,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:13" (1/1) ... [2020-09-25 03:13:13,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:13" (1/1) ... [2020-09-25 03:13:13,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:13" (1/1) ... [2020-09-25 03:13:13,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:13" (1/1) ... [2020-09-25 03:13:13,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:13" (1/1) ... [2020-09-25 03:13:13,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:13:13,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:13:13,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:13:13,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:13:13,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:13" (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 [2020-09-25 03:13:13,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:13:13,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:13:13,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 03:13:13,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:13:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:13:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 03:13:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:13:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 03:13:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 03:13:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:13:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:13:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:13:13,608 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 03:13:14,380 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 03:13:14,380 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 03:13:14,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:13:14,399 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:13:14,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:14 BoogieIcfgContainer [2020-09-25 03:13:14,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:13:14,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:13:14,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:13:14,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:13:14,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:13:12" (1/3) ... [2020-09-25 03:13:14,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdc87b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:14, skipping insertion in model container [2020-09-25 03:13:14,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:13" (2/3) ... [2020-09-25 03:13:14,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdc87b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:14, skipping insertion in model container [2020-09-25 03:13:14,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:14" (3/3) ... [2020-09-25 03:13:14,420 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-09-25 03:13:14,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:13:14,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:13:14,464 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:13:14,500 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:13:14,500 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:13:14,500 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:13:14,501 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:13:14,501 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:13:14,501 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:13:14,501 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:13:14,501 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:13:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states. [2020-09-25 03:13:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 03:13:14,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:14,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:14,554 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:14,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1103530067, now seen corresponding path program 1 times [2020-09-25 03:13:14,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:14,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308178894] [2020-09-25 03:13:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:16,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:16,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 03:13:16,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:16,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1472 [2020-09-25 03:13:16,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:13:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:13:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 03:13:16,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:13:16,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:16,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:16,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:16,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:16,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:16,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:16,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:16,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308178894] [2020-09-25 03:13:16,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:16,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:13:16,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917251519] [2020-09-25 03:13:16,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:13:16,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:16,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:13:16,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:13:16,567 INFO L87 Difference]: Start difference. First operand 440 states. Second operand 7 states. [2020-09-25 03:13:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:17,098 INFO L93 Difference]: Finished difference Result 828 states and 1080 transitions. [2020-09-25 03:13:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:13:17,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 03:13:17,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:17,123 INFO L225 Difference]: With dead ends: 828 [2020-09-25 03:13:17,123 INFO L226 Difference]: Without dead ends: 473 [2020-09-25 03:13:17,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:13:17,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-09-25 03:13:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 446. [2020-09-25 03:13:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-09-25 03:13:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 534 transitions. [2020-09-25 03:13:17,252 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 534 transitions. Word has length 160 [2020-09-25 03:13:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:17,255 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 534 transitions. [2020-09-25 03:13:17,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:13:17,256 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 534 transitions. [2020-09-25 03:13:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 03:13:17,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:17,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:17,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:13:17,270 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:17,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:17,271 INFO L82 PathProgramCache]: Analyzing trace with hash 218441517, now seen corresponding path program 1 times [2020-09-25 03:13:17,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:17,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23607092] [2020-09-25 03:13:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:17,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:17,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:18,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:18,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 03:13:18,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-09-25 03:13:18,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-09-25 03:13:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:13:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:18,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:18,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:18,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:18,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:18,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:13:18,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23607092] [2020-09-25 03:13:18,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:18,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:18,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341895339] [2020-09-25 03:13:18,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:18,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:18,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:18,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:18,337 INFO L87 Difference]: Start difference. First operand 446 states and 534 transitions. Second operand 3 states. [2020-09-25 03:13:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:18,406 INFO L93 Difference]: Finished difference Result 768 states and 941 transitions. [2020-09-25 03:13:18,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:18,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-09-25 03:13:18,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:18,411 INFO L225 Difference]: With dead ends: 768 [2020-09-25 03:13:18,411 INFO L226 Difference]: Without dead ends: 462 [2020-09-25 03:13:18,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-09-25 03:13:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2020-09-25 03:13:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-09-25 03:13:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 550 transitions. [2020-09-25 03:13:18,435 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 550 transitions. Word has length 185 [2020-09-25 03:13:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:18,436 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 550 transitions. [2020-09-25 03:13:18,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 550 transitions. [2020-09-25 03:13:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 03:13:18,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:18,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:18,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:13:18,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:18,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1170929738, now seen corresponding path program 1 times [2020-09-25 03:13:18,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:18,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725360249] [2020-09-25 03:13:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:18,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:18,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:19,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:19,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 03:13:19,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:19,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-09-25 03:13:19,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:19,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:13:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 03:13:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 03:13:19,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:19,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:19,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:19,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:19,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:19,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725360249] [2020-09-25 03:13:19,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:19,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 03:13:19,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139809265] [2020-09-25 03:13:19,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:19,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:19,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:19,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:19,145 INFO L87 Difference]: Start difference. First operand 462 states and 550 transitions. Second operand 4 states. [2020-09-25 03:13:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:19,433 INFO L93 Difference]: Finished difference Result 840 states and 1041 transitions. [2020-09-25 03:13:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:19,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-09-25 03:13:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:19,439 INFO L225 Difference]: With dead ends: 840 [2020-09-25 03:13:19,440 INFO L226 Difference]: Without dead ends: 534 [2020-09-25 03:13:19,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:19,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-09-25 03:13:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 513. [2020-09-25 03:13:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 03:13:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 613 transitions. [2020-09-25 03:13:19,467 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 613 transitions. Word has length 186 [2020-09-25 03:13:19,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:19,468 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 613 transitions. [2020-09-25 03:13:19,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 613 transitions. [2020-09-25 03:13:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 03:13:19,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:19,472 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:19,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:13:19,473 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:19,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:19,474 INFO L82 PathProgramCache]: Analyzing trace with hash 571436394, now seen corresponding path program 1 times [2020-09-25 03:13:19,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:19,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808095964] [2020-09-25 03:13:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:19,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:19,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:20,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:20,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 03:13:20,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-09-25 03:13:20,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:20,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 03:13:20,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:13:20,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:20,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:20,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:20,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:20,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:20,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:20,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:20,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808095964] [2020-09-25 03:13:20,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:20,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 03:13:20,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415114445] [2020-09-25 03:13:20,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:13:20,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:20,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:13:20,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:20,782 INFO L87 Difference]: Start difference. First operand 513 states and 613 transitions. Second operand 5 states. [2020-09-25 03:13:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:21,229 INFO L93 Difference]: Finished difference Result 1306 states and 1624 transitions. [2020-09-25 03:13:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:13:21,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-09-25 03:13:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:21,235 INFO L225 Difference]: With dead ends: 1306 [2020-09-25 03:13:21,235 INFO L226 Difference]: Without dead ends: 949 [2020-09-25 03:13:21,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:13:21,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-09-25 03:13:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 517. [2020-09-25 03:13:21,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-09-25 03:13:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 618 transitions. [2020-09-25 03:13:21,257 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 618 transitions. Word has length 194 [2020-09-25 03:13:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:21,258 INFO L479 AbstractCegarLoop]: Abstraction has 517 states and 618 transitions. [2020-09-25 03:13:21,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:13:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 618 transitions. [2020-09-25 03:13:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 03:13:21,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:21,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:21,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:13:21,262 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:21,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:21,262 INFO L82 PathProgramCache]: Analyzing trace with hash 298466284, now seen corresponding path program 1 times [2020-09-25 03:13:21,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:21,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670098374] [2020-09-25 03:13:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:21,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:22,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 03:13:22,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-09-25 03:13:22,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 03:13:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:13:22,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:22,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:13:22,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670098374] [2020-09-25 03:13:22,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:22,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:22,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265045162] [2020-09-25 03:13:22,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:22,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:22,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:22,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:22,541 INFO L87 Difference]: Start difference. First operand 517 states and 618 transitions. Second operand 3 states. [2020-09-25 03:13:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:22,618 INFO L93 Difference]: Finished difference Result 928 states and 1135 transitions. [2020-09-25 03:13:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:22,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-09-25 03:13:22,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:22,622 INFO L225 Difference]: With dead ends: 928 [2020-09-25 03:13:22,622 INFO L226 Difference]: Without dead ends: 567 [2020-09-25 03:13:22,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-09-25 03:13:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2020-09-25 03:13:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-09-25 03:13:22,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 676 transitions. [2020-09-25 03:13:22,643 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 676 transitions. Word has length 213 [2020-09-25 03:13:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:22,644 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 676 transitions. [2020-09-25 03:13:22,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:22,644 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 676 transitions. [2020-09-25 03:13:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 03:13:22,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:22,647 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:22,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:13:22,648 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:22,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:22,648 INFO L82 PathProgramCache]: Analyzing trace with hash -815620662, now seen corresponding path program 1 times [2020-09-25 03:13:22,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:22,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330738353] [2020-09-25 03:13:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:22,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:23,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:23,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 03:13:23,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-09-25 03:13:23,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:13:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 03:13:23,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 03:13:23,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:23,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:23,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:23,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:23,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:23,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:23,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:23,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:13:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 03:13:23,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330738353] [2020-09-25 03:13:23,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:23,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 03:13:23,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308210697] [2020-09-25 03:13:23,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:23,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:23,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:23,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:23,464 INFO L87 Difference]: Start difference. First operand 567 states and 676 transitions. Second operand 4 states. [2020-09-25 03:13:23,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:23,832 INFO L93 Difference]: Finished difference Result 1109 states and 1378 transitions. [2020-09-25 03:13:23,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:23,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-09-25 03:13:23,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:23,841 INFO L225 Difference]: With dead ends: 1109 [2020-09-25 03:13:23,841 INFO L226 Difference]: Without dead ends: 683 [2020-09-25 03:13:23,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-09-25 03:13:23,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 658. [2020-09-25 03:13:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-25 03:13:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 784 transitions. [2020-09-25 03:13:23,880 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 784 transitions. Word has length 214 [2020-09-25 03:13:23,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:23,881 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 784 transitions. [2020-09-25 03:13:23,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 784 transitions. [2020-09-25 03:13:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 03:13:23,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:23,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:23,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:13:23,890 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:23,891 INFO L82 PathProgramCache]: Analyzing trace with hash 270727530, now seen corresponding path program 1 times [2020-09-25 03:13:23,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:23,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874758875] [2020-09-25 03:13:23,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:24,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:24,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:24,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:24,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 03:13:24,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:24,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-09-25 03:13:24,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:13:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 03:13:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 03:13:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:13:24,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:24,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:24,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:24,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:24,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:24,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 03:13:24,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874758875] [2020-09-25 03:13:24,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:24,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 03:13:24,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696584224] [2020-09-25 03:13:24,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:24,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:24,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:24,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:24,952 INFO L87 Difference]: Start difference. First operand 658 states and 784 transitions. Second operand 4 states. [2020-09-25 03:13:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:25,262 INFO L93 Difference]: Finished difference Result 1257 states and 1536 transitions. [2020-09-25 03:13:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:25,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-09-25 03:13:25,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:25,270 INFO L225 Difference]: With dead ends: 1257 [2020-09-25 03:13:25,270 INFO L226 Difference]: Without dead ends: 740 [2020-09-25 03:13:25,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:25,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-09-25 03:13:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 714. [2020-09-25 03:13:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2020-09-25 03:13:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 851 transitions. [2020-09-25 03:13:25,308 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 851 transitions. Word has length 214 [2020-09-25 03:13:25,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:25,309 INFO L479 AbstractCegarLoop]: Abstraction has 714 states and 851 transitions. [2020-09-25 03:13:25,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 851 transitions. [2020-09-25 03:13:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 03:13:25,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:25,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:25,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:13:25,317 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:25,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:25,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1651086058, now seen corresponding path program 1 times [2020-09-25 03:13:25,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:25,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357765818] [2020-09-25 03:13:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:25,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:26,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:26,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 03:13:26,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-25 03:13:26,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 03:13:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:13:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:26,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:26,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:26,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:26,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:26,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 03:13:26,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357765818] [2020-09-25 03:13:26,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:26,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 03:13:26,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415800670] [2020-09-25 03:13:26,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:13:26,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:26,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:13:26,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:26,493 INFO L87 Difference]: Start difference. First operand 714 states and 851 transitions. Second operand 5 states. [2020-09-25 03:13:27,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:27,142 INFO L93 Difference]: Finished difference Result 1939 states and 2390 transitions. [2020-09-25 03:13:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:13:27,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-09-25 03:13:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:27,154 INFO L225 Difference]: With dead ends: 1939 [2020-09-25 03:13:27,154 INFO L226 Difference]: Without dead ends: 1381 [2020-09-25 03:13:27,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:13:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-09-25 03:13:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 719. [2020-09-25 03:13:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-09-25 03:13:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 857 transitions. [2020-09-25 03:13:27,200 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 857 transitions. Word has length 222 [2020-09-25 03:13:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:27,201 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 857 transitions. [2020-09-25 03:13:27,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:13:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 857 transitions. [2020-09-25 03:13:27,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 03:13:27,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:27,207 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:27,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:13:27,228 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:27,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:27,228 INFO L82 PathProgramCache]: Analyzing trace with hash -513519990, now seen corresponding path program 1 times [2020-09-25 03:13:27,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:27,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067396895] [2020-09-25 03:13:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:27,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:28,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:28,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:28,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 03:13:28,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-09-25 03:13:28,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 03:13:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:13:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:28,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:28,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:28,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:28,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:28,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 03:13:28,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067396895] [2020-09-25 03:13:28,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:28,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 03:13:28,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130086880] [2020-09-25 03:13:28,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:13:28,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:28,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:13:28,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:28,367 INFO L87 Difference]: Start difference. First operand 719 states and 857 transitions. Second operand 5 states. [2020-09-25 03:13:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:28,925 INFO L93 Difference]: Finished difference Result 1932 states and 2366 transitions. [2020-09-25 03:13:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:13:28,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-09-25 03:13:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:28,937 INFO L225 Difference]: With dead ends: 1932 [2020-09-25 03:13:28,937 INFO L226 Difference]: Without dead ends: 1369 [2020-09-25 03:13:28,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:13:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2020-09-25 03:13:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 723. [2020-09-25 03:13:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-09-25 03:13:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 862 transitions. [2020-09-25 03:13:28,968 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 862 transitions. Word has length 222 [2020-09-25 03:13:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:28,969 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 862 transitions. [2020-09-25 03:13:28,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:13:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 862 transitions. [2020-09-25 03:13:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 03:13:28,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:28,973 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:28,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:13:28,974 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:28,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:28,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1641592678, now seen corresponding path program 1 times [2020-09-25 03:13:28,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:28,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531100882] [2020-09-25 03:13:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:29,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:29,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:29,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 03:13:29,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:13:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-09-25 03:13:29,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-25 03:13:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:13:29,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:29,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:29,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 03:13:29,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531100882] [2020-09-25 03:13:29,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:29,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:29,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972652201] [2020-09-25 03:13:29,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:29,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:29,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:29,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:29,579 INFO L87 Difference]: Start difference. First operand 723 states and 862 transitions. Second operand 3 states. [2020-09-25 03:13:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:29,823 INFO L93 Difference]: Finished difference Result 1411 states and 1728 transitions. [2020-09-25 03:13:29,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:29,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2020-09-25 03:13:29,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:29,828 INFO L225 Difference]: With dead ends: 1411 [2020-09-25 03:13:29,829 INFO L226 Difference]: Without dead ends: 827 [2020-09-25 03:13:29,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:29,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2020-09-25 03:13:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 762. [2020-09-25 03:13:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2020-09-25 03:13:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 916 transitions. [2020-09-25 03:13:29,857 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 916 transitions. Word has length 243 [2020-09-25 03:13:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:29,858 INFO L479 AbstractCegarLoop]: Abstraction has 762 states and 916 transitions. [2020-09-25 03:13:29,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 916 transitions. [2020-09-25 03:13:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 03:13:29,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:29,862 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:29,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:13:29,863 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:29,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:29,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1793170425, now seen corresponding path program 1 times [2020-09-25 03:13:29,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:29,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717626696] [2020-09-25 03:13:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:30,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:30,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:30,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:30,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:31,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 03:13:31,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:13:31,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-09-25 03:13:31,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:13:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 230 [2020-09-25 03:13:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:13:31,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:31,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:31,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:31,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:31,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:31,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:31,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 03:13:31,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717626696] [2020-09-25 03:13:31,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:31,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:13:31,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74326136] [2020-09-25 03:13:31,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:31,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:31,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:31,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:31,156 INFO L87 Difference]: Start difference. First operand 762 states and 916 transitions. Second operand 4 states. [2020-09-25 03:13:31,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:31,395 INFO L93 Difference]: Finished difference Result 1449 states and 1767 transitions. [2020-09-25 03:13:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:31,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 249 [2020-09-25 03:13:31,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:31,401 INFO L225 Difference]: With dead ends: 1449 [2020-09-25 03:13:31,401 INFO L226 Difference]: Without dead ends: 843 [2020-09-25 03:13:31,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2020-09-25 03:13:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 794. [2020-09-25 03:13:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-09-25 03:13:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 955 transitions. [2020-09-25 03:13:31,434 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 955 transitions. Word has length 249 [2020-09-25 03:13:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:31,435 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 955 transitions. [2020-09-25 03:13:31,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 955 transitions. [2020-09-25 03:13:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 03:13:31,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:31,440 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:31,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:13:31,440 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:31,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:31,440 INFO L82 PathProgramCache]: Analyzing trace with hash 661278854, now seen corresponding path program 1 times [2020-09-25 03:13:31,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:31,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455446670] [2020-09-25 03:13:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:31,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:33,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 03:13:33,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:33,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1834 [2020-09-25 03:13:33,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:33,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:33,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-25 03:13:33,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 03:13:33,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:33,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:33,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:33,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:33,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 03:13:33,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455446670] [2020-09-25 03:13:33,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:33,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:13:33,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935122240] [2020-09-25 03:13:33,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:33,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:33,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:33,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:33,430 INFO L87 Difference]: Start difference. First operand 794 states and 955 transitions. Second operand 4 states. [2020-09-25 03:13:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:33,817 INFO L93 Difference]: Finished difference Result 2114 states and 2619 transitions. [2020-09-25 03:13:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:33,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 251 [2020-09-25 03:13:33,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:33,827 INFO L225 Difference]: With dead ends: 2114 [2020-09-25 03:13:33,828 INFO L226 Difference]: Without dead ends: 1476 [2020-09-25 03:13:33,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:33,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-09-25 03:13:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 822. [2020-09-25 03:13:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-09-25 03:13:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 997 transitions. [2020-09-25 03:13:33,873 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 997 transitions. Word has length 251 [2020-09-25 03:13:33,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:33,874 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 997 transitions. [2020-09-25 03:13:33,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:33,874 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 997 transitions. [2020-09-25 03:13:33,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 03:13:33,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:33,880 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:33,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 03:13:33,881 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:33,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:33,881 INFO L82 PathProgramCache]: Analyzing trace with hash -21162653, now seen corresponding path program 1 times [2020-09-25 03:13:33,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:33,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807181114] [2020-09-25 03:13:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:34,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 03:13:34,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:13:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-25 03:13:34,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-25 03:13:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 03:13:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:34,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:34,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:34,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:34,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:34,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:34,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 03:13:34,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807181114] [2020-09-25 03:13:34,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:34,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:34,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003026173] [2020-09-25 03:13:34,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:34,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:34,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:34,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:34,514 INFO L87 Difference]: Start difference. First operand 822 states and 997 transitions. Second operand 3 states. [2020-09-25 03:13:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:34,616 INFO L93 Difference]: Finished difference Result 2090 states and 2599 transitions. [2020-09-25 03:13:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:34,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2020-09-25 03:13:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:34,624 INFO L225 Difference]: With dead ends: 2090 [2020-09-25 03:13:34,624 INFO L226 Difference]: Without dead ends: 1424 [2020-09-25 03:13:34,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:34,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-09-25 03:13:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1422. [2020-09-25 03:13:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1422 states. [2020-09-25 03:13:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1753 transitions. [2020-09-25 03:13:34,696 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1753 transitions. Word has length 253 [2020-09-25 03:13:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:34,697 INFO L479 AbstractCegarLoop]: Abstraction has 1422 states and 1753 transitions. [2020-09-25 03:13:34,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1753 transitions. [2020-09-25 03:13:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-25 03:13:34,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:34,703 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:34,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 03:13:34,703 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:34,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:34,704 INFO L82 PathProgramCache]: Analyzing trace with hash -198349492, now seen corresponding path program 1 times [2020-09-25 03:13:34,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:34,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542068646] [2020-09-25 03:13:34,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:34,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:35,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:36,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:36,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 03:13:36,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1688 [2020-09-25 03:13:36,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-25 03:13:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:13:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:36,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:36,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:36,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:36,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:36,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:36,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:36,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:36,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:36,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 03:13:36,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542068646] [2020-09-25 03:13:36,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:36,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:13:36,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079105144] [2020-09-25 03:13:36,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:36,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:36,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:36,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:36,558 INFO L87 Difference]: Start difference. First operand 1422 states and 1753 transitions. Second operand 4 states. [2020-09-25 03:13:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:36,946 INFO L93 Difference]: Finished difference Result 4032 states and 5053 transitions. [2020-09-25 03:13:36,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:36,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2020-09-25 03:13:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:36,966 INFO L225 Difference]: With dead ends: 4032 [2020-09-25 03:13:36,966 INFO L226 Difference]: Without dead ends: 2766 [2020-09-25 03:13:36,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:36,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2020-09-25 03:13:37,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 1460. [2020-09-25 03:13:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-09-25 03:13:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1807 transitions. [2020-09-25 03:13:37,057 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1807 transitions. Word has length 256 [2020-09-25 03:13:37,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:37,058 INFO L479 AbstractCegarLoop]: Abstraction has 1460 states and 1807 transitions. [2020-09-25 03:13:37,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:37,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1807 transitions. [2020-09-25 03:13:37,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-25 03:13:37,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:37,067 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:37,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 03:13:37,068 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:37,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:37,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1691601656, now seen corresponding path program 1 times [2020-09-25 03:13:37,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:37,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302422802] [2020-09-25 03:13:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:38,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:38,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 03:13:38,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:13:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-09-25 03:13:38,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:13:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 230 [2020-09-25 03:13:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:13:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:38,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:38,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:38,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:38,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:38,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:38,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:13:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 03:13:38,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302422802] [2020-09-25 03:13:38,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:38,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:13:38,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406775464] [2020-09-25 03:13:38,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:38,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:38,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:38,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:38,201 INFO L87 Difference]: Start difference. First operand 1460 states and 1807 transitions. Second operand 4 states. [2020-09-25 03:13:38,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:38,530 INFO L93 Difference]: Finished difference Result 3027 states and 3794 transitions. [2020-09-25 03:13:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:38,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2020-09-25 03:13:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:38,538 INFO L225 Difference]: With dead ends: 3027 [2020-09-25 03:13:38,539 INFO L226 Difference]: Without dead ends: 1723 [2020-09-25 03:13:38,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-09-25 03:13:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1606. [2020-09-25 03:13:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-09-25 03:13:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1982 transitions. [2020-09-25 03:13:38,596 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1982 transitions. Word has length 256 [2020-09-25 03:13:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:38,596 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 1982 transitions. [2020-09-25 03:13:38,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1982 transitions. [2020-09-25 03:13:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 03:13:38,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:38,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:38,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 03:13:38,602 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:38,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2091962349, now seen corresponding path program 1 times [2020-09-25 03:13:38,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:38,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706072130] [2020-09-25 03:13:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:38,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:38,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:40,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:40,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 03:13:40,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:40,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1867 [2020-09-25 03:13:40,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:13:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-25 03:13:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 03:13:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:40,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:40,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:40,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:40,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:40,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:40,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 03:13:40,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706072130] [2020-09-25 03:13:40,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:40,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:13:40,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734744570] [2020-09-25 03:13:40,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:40,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:40,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:40,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:40,623 INFO L87 Difference]: Start difference. First operand 1606 states and 1982 transitions. Second operand 4 states. [2020-09-25 03:13:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:41,142 INFO L93 Difference]: Finished difference Result 4674 states and 5882 transitions. [2020-09-25 03:13:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:41,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2020-09-25 03:13:41,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:41,158 INFO L225 Difference]: With dead ends: 4674 [2020-09-25 03:13:41,158 INFO L226 Difference]: Without dead ends: 3224 [2020-09-25 03:13:41,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2020-09-25 03:13:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 1614. [2020-09-25 03:13:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1614 states. [2020-09-25 03:13:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 1992 transitions. [2020-09-25 03:13:41,237 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 1992 transitions. Word has length 257 [2020-09-25 03:13:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:41,238 INFO L479 AbstractCegarLoop]: Abstraction has 1614 states and 1992 transitions. [2020-09-25 03:13:41,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:41,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 1992 transitions. [2020-09-25 03:13:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 03:13:41,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:41,242 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:41,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 03:13:41,242 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:41,242 INFO L82 PathProgramCache]: Analyzing trace with hash -874763223, now seen corresponding path program 1 times [2020-09-25 03:13:41,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:41,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612616639] [2020-09-25 03:13:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:42,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 03:13:42,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:13:42,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-09-25 03:13:42,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:13:42,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 230 [2020-09-25 03:13:42,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:13:42,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:42,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:42,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:42,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 03:13:42,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612616639] [2020-09-25 03:13:42,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:42,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:13:42,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612399008] [2020-09-25 03:13:42,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:13:42,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:42,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:13:42,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:13:42,344 INFO L87 Difference]: Start difference. First operand 1614 states and 1992 transitions. Second operand 4 states. [2020-09-25 03:13:42,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:42,615 INFO L93 Difference]: Finished difference Result 3279 states and 4071 transitions. [2020-09-25 03:13:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:13:42,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2020-09-25 03:13:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:42,624 INFO L225 Difference]: With dead ends: 3279 [2020-09-25 03:13:42,625 INFO L226 Difference]: Without dead ends: 1821 [2020-09-25 03:13:42,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:13:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2020-09-25 03:13:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1650. [2020-09-25 03:13:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1650 states. [2020-09-25 03:13:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2040 transitions. [2020-09-25 03:13:42,688 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2040 transitions. Word has length 257 [2020-09-25 03:13:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:42,689 INFO L479 AbstractCegarLoop]: Abstraction has 1650 states and 2040 transitions. [2020-09-25 03:13:42,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:13:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2040 transitions. [2020-09-25 03:13:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-25 03:13:42,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:42,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:42,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 03:13:42,693 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:42,694 INFO L82 PathProgramCache]: Analyzing trace with hash -296998075, now seen corresponding path program 1 times [2020-09-25 03:13:42,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:42,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64419964] [2020-09-25 03:13:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:43,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:43,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 03:13:43,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:13:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-09-25 03:13:43,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-09-25 03:13:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:13:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:43,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:43,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:43,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:43,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:43,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 03:13:43,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64419964] [2020-09-25 03:13:43,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:43,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:43,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217943882] [2020-09-25 03:13:43,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:43,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:43,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:43,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:43,211 INFO L87 Difference]: Start difference. First operand 1650 states and 2040 transitions. Second operand 3 states. [2020-09-25 03:13:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:43,333 INFO L93 Difference]: Finished difference Result 3860 states and 4829 transitions. [2020-09-25 03:13:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:43,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2020-09-25 03:13:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:43,346 INFO L225 Difference]: With dead ends: 3860 [2020-09-25 03:13:43,346 INFO L226 Difference]: Without dead ends: 2366 [2020-09-25 03:13:43,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2020-09-25 03:13:43,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2364. [2020-09-25 03:13:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2364 states. [2020-09-25 03:13:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 2944 transitions. [2020-09-25 03:13:43,431 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 2944 transitions. Word has length 258 [2020-09-25 03:13:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:43,431 INFO L479 AbstractCegarLoop]: Abstraction has 2364 states and 2944 transitions. [2020-09-25 03:13:43,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 2944 transitions. [2020-09-25 03:13:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 03:13:43,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:43,435 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:43,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 03:13:43,436 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:43,436 INFO L82 PathProgramCache]: Analyzing trace with hash 512679513, now seen corresponding path program 1 times [2020-09-25 03:13:43,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:43,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842507160] [2020-09-25 03:13:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:43,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:43,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:43,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:43,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 03:13:43,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:13:43,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-25 03:13:43,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-09-25 03:13:43,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:13:43,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:43,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:43,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:43,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:43,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:43,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:43,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:43,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:43,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:43,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 03:13:43,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842507160] [2020-09-25 03:13:43,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:43,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:43,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058770746] [2020-09-25 03:13:43,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:43,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:43,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:43,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:43,903 INFO L87 Difference]: Start difference. First operand 2364 states and 2944 transitions. Second operand 3 states. [2020-09-25 03:13:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:44,037 INFO L93 Difference]: Finished difference Result 5288 states and 6633 transitions. [2020-09-25 03:13:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:44,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2020-09-25 03:13:44,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:44,052 INFO L225 Difference]: With dead ends: 5288 [2020-09-25 03:13:44,052 INFO L226 Difference]: Without dead ends: 3080 [2020-09-25 03:13:44,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2020-09-25 03:13:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 3078. [2020-09-25 03:13:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3078 states. [2020-09-25 03:13:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 3824 transitions. [2020-09-25 03:13:44,154 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 3824 transitions. Word has length 261 [2020-09-25 03:13:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:44,158 INFO L479 AbstractCegarLoop]: Abstraction has 3078 states and 3824 transitions. [2020-09-25 03:13:44,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 3824 transitions. [2020-09-25 03:13:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 03:13:44,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:44,163 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:44,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 03:13:44,163 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:44,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:44,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1637140168, now seen corresponding path program 1 times [2020-09-25 03:13:44,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:44,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953556317] [2020-09-25 03:13:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:45,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:45,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 03:13:45,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:45,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-09-25 03:13:45,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:45,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:45,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-09-25 03:13:45,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:13:45,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:45,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:45,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:45,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:45,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:45,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:45,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:45,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-25 03:13:45,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953556317] [2020-09-25 03:13:45,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:45,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:45,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115737131] [2020-09-25 03:13:45,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:45,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:45,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:45,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:45,302 INFO L87 Difference]: Start difference. First operand 3078 states and 3824 transitions. Second operand 3 states. [2020-09-25 03:13:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:45,515 INFO L93 Difference]: Finished difference Result 8818 states and 11016 transitions. [2020-09-25 03:13:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:45,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2020-09-25 03:13:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:45,539 INFO L225 Difference]: With dead ends: 8818 [2020-09-25 03:13:45,539 INFO L226 Difference]: Without dead ends: 5896 [2020-09-25 03:13:45,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2020-09-25 03:13:45,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5878. [2020-09-25 03:13:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5878 states. [2020-09-25 03:13:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 7327 transitions. [2020-09-25 03:13:45,798 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 7327 transitions. Word has length 263 [2020-09-25 03:13:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:45,798 INFO L479 AbstractCegarLoop]: Abstraction has 5878 states and 7327 transitions. [2020-09-25 03:13:45,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:45,799 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 7327 transitions. [2020-09-25 03:13:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-09-25 03:13:45,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:45,804 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:45,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 03:13:45,804 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:45,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:45,805 INFO L82 PathProgramCache]: Analyzing trace with hash -196875119, now seen corresponding path program 1 times [2020-09-25 03:13:45,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:45,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494802781] [2020-09-25 03:13:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:13:45,852 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:13:45,853 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:13:45,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 03:13:45,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:13:45 BoogieIcfgContainer [2020-09-25 03:13:45,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:13:45,899 INFO L168 Benchmark]: Toolchain (without parser) took 33277.65 ms. Allocated memory was 140.5 MB in the beginning and 630.7 MB in the end (delta: 490.2 MB). Free memory was 101.9 MB in the beginning and 226.8 MB in the end (delta: -124.9 MB). Peak memory consumption was 365.3 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:45,899 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:13:45,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.64 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 179.5 MB in the end (delta: -78.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:45,901 INFO L168 Benchmark]: Boogie Preprocessor took 72.94 ms. Allocated memory is still 204.5 MB. Free memory was 179.5 MB in the beginning and 176.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:45,901 INFO L168 Benchmark]: RCFGBuilder took 1114.99 ms. Allocated memory is still 204.5 MB. Free memory was 176.5 MB in the beginning and 104.0 MB in the end (delta: 72.6 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:45,902 INFO L168 Benchmark]: TraceAbstraction took 31484.88 ms. Allocated memory was 204.5 MB in the beginning and 630.7 MB in the end (delta: 426.2 MB). Free memory was 103.3 MB in the beginning and 226.8 MB in the end (delta: -123.4 MB). Peak memory consumption was 302.8 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:45,905 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 594.64 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 179.5 MB in the end (delta: -78.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.94 ms. Allocated memory is still 204.5 MB. Free memory was 179.5 MB in the beginning and 176.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1114.99 ms. Allocated memory is still 204.5 MB. Free memory was 176.5 MB in the beginning and 104.0 MB in the end (delta: 72.6 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31484.88 ms. Allocated memory was 204.5 MB in the beginning and 630.7 MB in the end (delta: 426.2 MB). Free memory was 103.3 MB in the beginning and 226.8 MB in the end (delta: -123.4 MB). Peak memory consumption was 302.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 642]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L647] int s ; [L648] int tmp ; [L652] s = 8464 [L653] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 = __VERIFIER_nondet_int() ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__state = initial_state [L73] blastFlag = 0 [L74] tmp = __VERIFIER_nondet_int() [L75] Time = tmp [L76] cb = 0 [L77] ret = -1 [L78] skip = 0 [L79] got_new_session = 0 [L80] COND TRUE s__info_callback != 0 [L81] cb = s__info_callback [L87] s__in_handshake ++ [L88] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(s__cert == 0) [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND TRUE s__state == 8464 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] got_new_session = 1 [L279] s__state = 8496 [L280] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND TRUE s__state == 8496 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L288] COND FALSE !(ret <= 0) [L291] COND FALSE !(\read(s__hit)) [L294] s__state = 8512 [L296] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND TRUE s__state == 8512 [L301] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L302] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L303] COND TRUE __cil_tmp56 + 256UL [L304] skip = 1 [L315] s__state = 8528 [L316] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND TRUE s__state == 8528 [L320] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L321] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L323] __cil_tmp57 = (unsigned long )s__options [L324] COND TRUE __cil_tmp57 + 2097152UL [L325] s__s3__tmp__use_rsa_tmp = 1 [L330] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L357] ret = __VERIFIER_nondet_int() [L358] COND FALSE !(blastFlag == 6) [L361] COND FALSE !(ret <= 0) [L378] s__state = 8544 [L379] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND TRUE ! s__s3__tmp__reuse_message [L601] COND TRUE ! skip [L602] COND TRUE state == 8528 [L603] COND TRUE s__state == 8544 [L604] COND TRUE tmp___7 != 1024 [L605] COND TRUE tmp___7 != 512 [L606] COND TRUE __cil_tmp58 != 4294967294 [L607] COND TRUE l != 4294967266 [L642] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 440 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.3s, OverallIterations: 21, TraceHistogramMax: 4, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11960 SDtfs, 7732 SDslu, 16707 SDs, 0 SdLazy, 3240 SolverSat, 407 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5878occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 5835 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 21.3s InterpolantComputationTime, 4879 NumberOfCodeBlocks, 4879 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 4594 ConstructedInterpolants, 0 QuantifiedInterpolants, 1421934 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 1267/1297 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...