/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 interpolation-heuristic=FIRST --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_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:17,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:17,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:17,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:17,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:17,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:17,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:17,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:17,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:17,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:17,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:17,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:17,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:17,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:17,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:17,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:17,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:17,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:17,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:17,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:17,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:17,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:17,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:17,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:17,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:17,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:17,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:17,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:17,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:17,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:17,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:17,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:17,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:17,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:17,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:17,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:17,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:17,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:17,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:17,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:17,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:17,499 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 [2020-09-24 16:00:17,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:17,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:17,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:17,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:17,552 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:17,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:17,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:17,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:17,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:17,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:17,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:17,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:17,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:17,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:17,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:17,555 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:17,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:17,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:17,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:17,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:17,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:17,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:17,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:17,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:17,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:17,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:17,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:17,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:17,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:17,558 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:00:18,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:18,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:18,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:18,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:18,029 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:18,031 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-24 16:00:18,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80390c65d/0a8eb53c46d5422e80a4d4f061a41f62/FLAGc0d5e8f93 [2020-09-24 16:00:18,713 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:18,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-24 16:00:18,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80390c65d/0a8eb53c46d5422e80a4d4f061a41f62/FLAGc0d5e8f93 [2020-09-24 16:00:19,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80390c65d/0a8eb53c46d5422e80a4d4f061a41f62 [2020-09-24 16:00:19,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:19,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:19,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:19,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:19,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:19,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:19" (1/1) ... [2020-09-24 16:00:19,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df7be5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19, skipping insertion in model container [2020-09-24 16:00:19,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:19" (1/1) ... [2020-09-24 16:00:19,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:19,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:19,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:19,482 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:19,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:19,655 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:19,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19 WrapperNode [2020-09-24 16:00:19,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:19,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:19,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:19,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:19,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19" (1/1) ... [2020-09-24 16:00:19,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19" (1/1) ... [2020-09-24 16:00:19,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19" (1/1) ... [2020-09-24 16:00:19,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19" (1/1) ... [2020-09-24 16:00:19,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19" (1/1) ... [2020-09-24 16:00:19,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19" (1/1) ... [2020-09-24 16:00:19,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19" (1/1) ... [2020-09-24 16:00:19,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:19,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:19,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:19,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:19,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19" (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 [2020-09-24 16:00:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 16:00:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 16:00:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:00:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 16:00:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-24 16:00:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 16:00:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:20,060 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 16:00:20,930 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 16:00:20,930 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 16:00:20,949 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:20,949 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:00:20,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:20 BoogieIcfgContainer [2020-09-24 16:00:20,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:20,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:20,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:20,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:20,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:19" (1/3) ... [2020-09-24 16:00:20,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7723aa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:20, skipping insertion in model container [2020-09-24 16:00:20,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:19" (2/3) ... [2020-09-24 16:00:20,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7723aa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:20, skipping insertion in model container [2020-09-24 16:00:20,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:20" (3/3) ... [2020-09-24 16:00:20,971 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-24 16:00:20,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:20,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:21,021 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:21,070 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:21,071 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:21,071 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:21,071 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:21,071 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:21,071 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:21,071 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:21,072 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-24 16:00:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 16:00:21,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:21,121 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, 1] [2020-09-24 16:00:21,122 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:21,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-24 16:00:21,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:21,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128937635] [2020-09-24 16:00:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:21,413 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:21,414 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:21,414 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:21,414 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:21,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 16:00:21,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 16:00:21,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:00:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-24 16:00:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:21,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:21,743 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:21,743 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:21,743 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:21,744 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:21,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:21,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:21,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:21,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:21,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:21,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:21,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128937635] [2020-09-24 16:00:21,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:21,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:00:21,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108841045] [2020-09-24 16:00:21,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:00:21,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:21,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:00:21,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:21,829 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 6 states. [2020-09-24 16:00:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:22,364 INFO L93 Difference]: Finished difference Result 897 states and 1196 transitions. [2020-09-24 16:00:22,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:00:22,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-24 16:00:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:22,390 INFO L225 Difference]: With dead ends: 897 [2020-09-24 16:00:22,391 INFO L226 Difference]: Without dead ends: 505 [2020-09-24 16:00:22,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:00:22,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-09-24 16:00:22,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 490. [2020-09-24 16:00:22,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-24 16:00:22,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 595 transitions. [2020-09-24 16:00:22,500 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 595 transitions. Word has length 161 [2020-09-24 16:00:22,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:22,501 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 595 transitions. [2020-09-24 16:00:22,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:00:22,502 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 595 transitions. [2020-09-24 16:00:22,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 16:00:22,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:22,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:22,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:22,507 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:22,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1547598949, now seen corresponding path program 1 times [2020-09-24 16:00:22,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:22,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305811155] [2020-09-24 16:00:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:22,564 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:22,564 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:22,565 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:22,565 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:22,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 16:00:22,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:22,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 16:00:22,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:00:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 16:00:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:22,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:22,734 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:22,735 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:22,735 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:22,735 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:22,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:22,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:22,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:22,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305811155] [2020-09-24 16:00:22,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:22,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:00:22,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980946673] [2020-09-24 16:00:22,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:00:22,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:22,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:00:22,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:22,770 INFO L87 Difference]: Start difference. First operand 490 states and 595 transitions. Second operand 6 states. [2020-09-24 16:00:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:23,191 INFO L93 Difference]: Finished difference Result 937 states and 1192 transitions. [2020-09-24 16:00:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:00:23,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-24 16:00:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:23,197 INFO L225 Difference]: With dead ends: 937 [2020-09-24 16:00:23,197 INFO L226 Difference]: Without dead ends: 573 [2020-09-24 16:00:23,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:00:23,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-09-24 16:00:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 555. [2020-09-24 16:00:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-09-24 16:00:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 691 transitions. [2020-09-24 16:00:23,227 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 691 transitions. Word has length 169 [2020-09-24 16:00:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:23,228 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 691 transitions. [2020-09-24 16:00:23,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:00:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 691 transitions. [2020-09-24 16:00:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-24 16:00:23,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:23,232 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] [2020-09-24 16:00:23,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:23,233 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:23,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:23,234 INFO L82 PathProgramCache]: Analyzing trace with hash -2044458217, now seen corresponding path program 1 times [2020-09-24 16:00:23,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:23,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842711170] [2020-09-24 16:00:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:23,279 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:23,279 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:23,279 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:23,280 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:23,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 16:00:23,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:23,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 16:00:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:00:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:23,351 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:23,351 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:23,352 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:23,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:23,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:23,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 16:00:23,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842711170] [2020-09-24 16:00:23,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:23,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:23,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955947817] [2020-09-24 16:00:23,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:23,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:23,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:23,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:23,380 INFO L87 Difference]: Start difference. First operand 555 states and 691 transitions. Second operand 3 states. [2020-09-24 16:00:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:23,525 INFO L93 Difference]: Finished difference Result 987 states and 1256 transitions. [2020-09-24 16:00:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:23,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2020-09-24 16:00:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:23,533 INFO L225 Difference]: With dead ends: 987 [2020-09-24 16:00:23,534 INFO L226 Difference]: Without dead ends: 571 [2020-09-24 16:00:23,536 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 [2020-09-24 16:00:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-09-24 16:00:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-09-24 16:00:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-09-24 16:00:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 707 transitions. [2020-09-24 16:00:23,581 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 707 transitions. Word has length 186 [2020-09-24 16:00:23,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:23,585 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 707 transitions. [2020-09-24 16:00:23,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:23,585 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 707 transitions. [2020-09-24 16:00:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 16:00:23,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:23,600 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, 1] [2020-09-24 16:00:23,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:00:23,601 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:23,601 INFO L82 PathProgramCache]: Analyzing trace with hash 570616873, now seen corresponding path program 1 times [2020-09-24 16:00:23,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:23,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930332048] [2020-09-24 16:00:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:23,678 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:23,679 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:23,679 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:23,679 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:23,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-24 16:00:23,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:23,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:00:23,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:23,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-24 16:00:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 16:00:23,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:23,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:23,761 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:23,762 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:23,762 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:23,762 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:23,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:23,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:23,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:00:23,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:23,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:23,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930332048] [2020-09-24 16:00:23,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:23,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:23,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011809944] [2020-09-24 16:00:23,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:23,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:23,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:23,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:23,850 INFO L87 Difference]: Start difference. First operand 571 states and 707 transitions. Second operand 3 states. [2020-09-24 16:00:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:24,103 INFO L93 Difference]: Finished difference Result 1044 states and 1347 transitions. [2020-09-24 16:00:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:24,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-24 16:00:24,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:24,108 INFO L225 Difference]: With dead ends: 1044 [2020-09-24 16:00:24,108 INFO L226 Difference]: Without dead ends: 628 [2020-09-24 16:00:24,111 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 [2020-09-24 16:00:24,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-24 16:00:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 599. [2020-09-24 16:00:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-09-24 16:00:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2020-09-24 16:00:24,132 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 187 [2020-09-24 16:00:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:24,133 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2020-09-24 16:00:24,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:24,133 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2020-09-24 16:00:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 16:00:24,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:24,137 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, 1] [2020-09-24 16:00:24,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:00:24,137 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:24,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1436054601, now seen corresponding path program 1 times [2020-09-24 16:00:24,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:24,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085083574] [2020-09-24 16:00:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:24,181 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:24,181 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:24,182 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:24,182 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:24,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 16:00:24,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:24,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:24,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-24 16:00:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:00:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:24,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:24,236 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:24,236 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:24,236 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:24,236 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:24,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:24,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:24,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:24,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:24,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:24,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 16:00:24,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085083574] [2020-09-24 16:00:24,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:24,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:24,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677781688] [2020-09-24 16:00:24,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:24,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:24,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:24,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:24,262 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand 3 states. [2020-09-24 16:00:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:24,524 INFO L93 Difference]: Finished difference Result 1084 states and 1380 transitions. [2020-09-24 16:00:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:24,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2020-09-24 16:00:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:24,528 INFO L225 Difference]: With dead ends: 1084 [2020-09-24 16:00:24,529 INFO L226 Difference]: Without dead ends: 615 [2020-09-24 16:00:24,530 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 [2020-09-24 16:00:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-09-24 16:00:24,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 613. [2020-09-24 16:00:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-24 16:00:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 760 transitions. [2020-09-24 16:00:24,550 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 760 transitions. Word has length 195 [2020-09-24 16:00:24,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:24,551 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 760 transitions. [2020-09-24 16:00:24,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 760 transitions. [2020-09-24 16:00:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 16:00:24,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:24,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:24,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:00:24,556 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:24,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1774700262, now seen corresponding path program 1 times [2020-09-24 16:00:24,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:24,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605188865] [2020-09-24 16:00:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:24,600 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:24,601 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:24,601 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:24,601 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:24,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 16:00:24,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:24,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-24 16:00:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 16:00:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:24,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:24,658 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:24,662 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:24,662 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:24,662 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:24,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:24,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:24,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:24,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:24,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:24,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:24,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:24,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605188865] [2020-09-24 16:00:24,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:24,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:24,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050623371] [2020-09-24 16:00:24,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:24,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:24,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:24,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:24,691 INFO L87 Difference]: Start difference. First operand 613 states and 760 transitions. Second operand 4 states. [2020-09-24 16:00:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:24,953 INFO L93 Difference]: Finished difference Result 1127 states and 1424 transitions. [2020-09-24 16:00:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:24,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2020-09-24 16:00:24,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:24,960 INFO L225 Difference]: With dead ends: 1127 [2020-09-24 16:00:24,960 INFO L226 Difference]: Without dead ends: 660 [2020-09-24 16:00:24,962 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 [2020-09-24 16:00:24,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-09-24 16:00:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 633. [2020-09-24 16:00:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-09-24 16:00:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 784 transitions. [2020-09-24 16:00:24,993 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 784 transitions. Word has length 200 [2020-09-24 16:00:24,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:24,993 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 784 transitions. [2020-09-24 16:00:24,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:24,994 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 784 transitions. [2020-09-24 16:00:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 16:00:24,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:24,997 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:24,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:00:24,998 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:24,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1774597616, now seen corresponding path program 1 times [2020-09-24 16:00:24,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:24,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496503400] [2020-09-24 16:00:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,045 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,045 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,046 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,046 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-24 16:00:25,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:00:25,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-24 16:00:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 16:00:25,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:25,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,123 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,123 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,124 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,124 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:25,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:25,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:25,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:25,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496503400] [2020-09-24 16:00:25,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:25,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:25,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031135323] [2020-09-24 16:00:25,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:25,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:25,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:25,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:25,200 INFO L87 Difference]: Start difference. First operand 633 states and 784 transitions. Second operand 4 states. [2020-09-24 16:00:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:25,426 INFO L93 Difference]: Finished difference Result 1160 states and 1465 transitions. [2020-09-24 16:00:25,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:25,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-09-24 16:00:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:25,431 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 16:00:25,432 INFO L226 Difference]: Without dead ends: 672 [2020-09-24 16:00:25,434 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 [2020-09-24 16:00:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-09-24 16:00:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 625. [2020-09-24 16:00:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-09-24 16:00:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 776 transitions. [2020-09-24 16:00:25,456 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 776 transitions. Word has length 201 [2020-09-24 16:00:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:25,456 INFO L479 AbstractCegarLoop]: Abstraction has 625 states and 776 transitions. [2020-09-24 16:00:25,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 776 transitions. [2020-09-24 16:00:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-24 16:00:25,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:25,460 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:25,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:00:25,461 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:25,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1625465716, now seen corresponding path program 1 times [2020-09-24 16:00:25,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:25,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213850315] [2020-09-24 16:00:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,499 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,499 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,499 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,499 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-24 16:00:25,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:25,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-24 16:00:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 16:00:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,559 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:25,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:25,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:25,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:25,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213850315] [2020-09-24 16:00:25,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:25,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:25,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711454464] [2020-09-24 16:00:25,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:25,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:25,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:25,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:25,587 INFO L87 Difference]: Start difference. First operand 625 states and 776 transitions. Second operand 3 states. [2020-09-24 16:00:25,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:25,756 INFO L93 Difference]: Finished difference Result 1135 states and 1445 transitions. [2020-09-24 16:00:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:25,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2020-09-24 16:00:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:25,761 INFO L225 Difference]: With dead ends: 1135 [2020-09-24 16:00:25,761 INFO L226 Difference]: Without dead ends: 665 [2020-09-24 16:00:25,763 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 [2020-09-24 16:00:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2020-09-24 16:00:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 654. [2020-09-24 16:00:25,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-09-24 16:00:25,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 811 transitions. [2020-09-24 16:00:25,785 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 811 transitions. Word has length 202 [2020-09-24 16:00:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:25,786 INFO L479 AbstractCegarLoop]: Abstraction has 654 states and 811 transitions. [2020-09-24 16:00:25,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 811 transitions. [2020-09-24 16:00:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-24 16:00:25,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:25,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:25,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:00:25,791 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:25,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:25,792 INFO L82 PathProgramCache]: Analyzing trace with hash -718405888, now seen corresponding path program 1 times [2020-09-24 16:00:25,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:25,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579442035] [2020-09-24 16:00:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,828 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,829 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,829 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,829 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-24 16:00:25,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:25,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:25,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-24 16:00:25,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 16:00:25,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:25,892 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:25,892 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:25,892 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:25,893 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:25,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:25,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:25,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:25,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:25,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579442035] [2020-09-24 16:00:25,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:25,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:25,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126794220] [2020-09-24 16:00:25,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:25,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:25,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:25,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:25,998 INFO L87 Difference]: Start difference. First operand 654 states and 811 transitions. Second operand 4 states. [2020-09-24 16:00:26,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:26,316 INFO L93 Difference]: Finished difference Result 1200 states and 1530 transitions. [2020-09-24 16:00:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:26,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 210 [2020-09-24 16:00:26,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:26,320 INFO L225 Difference]: With dead ends: 1200 [2020-09-24 16:00:26,320 INFO L226 Difference]: Without dead ends: 701 [2020-09-24 16:00:26,322 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 [2020-09-24 16:00:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-09-24 16:00:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 665. [2020-09-24 16:00:26,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-24 16:00:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 820 transitions. [2020-09-24 16:00:26,343 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 820 transitions. Word has length 210 [2020-09-24 16:00:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:26,344 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 820 transitions. [2020-09-24 16:00:26,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 820 transitions. [2020-09-24 16:00:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-24 16:00:26,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:26,348 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:26,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:00:26,348 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:26,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:26,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1597515948, now seen corresponding path program 1 times [2020-09-24 16:00:26,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:26,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886988455] [2020-09-24 16:00:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:26,379 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:26,379 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:26,379 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:26,380 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:26,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-24 16:00:26,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:26,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-24 16:00:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 16:00:26,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:26,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:26,428 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:26,428 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:26,428 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:26,429 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:26,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:26,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:26,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:26,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:26,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:26,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886988455] [2020-09-24 16:00:26,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:26,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:26,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527784880] [2020-09-24 16:00:26,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:26,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:26,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:26,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:26,459 INFO L87 Difference]: Start difference. First operand 665 states and 820 transitions. Second operand 3 states. [2020-09-24 16:00:26,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:26,628 INFO L93 Difference]: Finished difference Result 1664 states and 2121 transitions. [2020-09-24 16:00:26,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:26,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-09-24 16:00:26,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:26,635 INFO L225 Difference]: With dead ends: 1664 [2020-09-24 16:00:26,635 INFO L226 Difference]: Without dead ends: 1154 [2020-09-24 16:00:26,637 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 [2020-09-24 16:00:26,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2020-09-24 16:00:26,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1152. [2020-09-24 16:00:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2020-09-24 16:00:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1438 transitions. [2020-09-24 16:00:26,672 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1438 transitions. Word has length 210 [2020-09-24 16:00:26,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:26,673 INFO L479 AbstractCegarLoop]: Abstraction has 1152 states and 1438 transitions. [2020-09-24 16:00:26,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:26,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1438 transitions. [2020-09-24 16:00:26,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 16:00:26,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:26,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:26,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:00:26,678 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:26,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:26,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1924666477, now seen corresponding path program 1 times [2020-09-24 16:00:26,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:26,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928462828] [2020-09-24 16:00:26,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:26,732 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:26,733 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:26,733 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:26,733 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:26,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-24 16:00:26,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:26,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-24 16:00:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:00:26,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:26,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:26,782 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:26,782 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:26,782 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:26,782 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:26,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:26,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:26,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:26,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:26,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:26,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:26,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:26,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:26,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928462828] [2020-09-24 16:00:26,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:26,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:26,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891619879] [2020-09-24 16:00:26,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:26,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:26,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:26,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:26,811 INFO L87 Difference]: Start difference. First operand 1152 states and 1438 transitions. Second operand 4 states. [2020-09-24 16:00:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:27,185 INFO L93 Difference]: Finished difference Result 3214 states and 4096 transitions. [2020-09-24 16:00:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:27,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2020-09-24 16:00:27,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:27,197 INFO L225 Difference]: With dead ends: 3214 [2020-09-24 16:00:27,198 INFO L226 Difference]: Without dead ends: 2217 [2020-09-24 16:00:27,201 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 [2020-09-24 16:00:27,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2020-09-24 16:00:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 1158. [2020-09-24 16:00:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1158 states. [2020-09-24 16:00:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1444 transitions. [2020-09-24 16:00:27,248 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1444 transitions. Word has length 213 [2020-09-24 16:00:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:27,248 INFO L479 AbstractCegarLoop]: Abstraction has 1158 states and 1444 transitions. [2020-09-24 16:00:27,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1444 transitions. [2020-09-24 16:00:27,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 16:00:27,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:27,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:27,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:00:27,254 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:27,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:27,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1074238856, now seen corresponding path program 1 times [2020-09-24 16:00:27,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:27,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896545262] [2020-09-24 16:00:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,291 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,291 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,291 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,291 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-24 16:00:27,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:27,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-24 16:00:27,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 16:00:27,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:27,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,341 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,342 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,342 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,342 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:27,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:27,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896545262] [2020-09-24 16:00:27,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:27,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:27,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088975852] [2020-09-24 16:00:27,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:27,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:27,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:27,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:27,379 INFO L87 Difference]: Start difference. First operand 1158 states and 1444 transitions. Second operand 3 states. [2020-09-24 16:00:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:27,624 INFO L93 Difference]: Finished difference Result 2273 states and 2901 transitions. [2020-09-24 16:00:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:27,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-09-24 16:00:27,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:27,632 INFO L225 Difference]: With dead ends: 2273 [2020-09-24 16:00:27,632 INFO L226 Difference]: Without dead ends: 1270 [2020-09-24 16:00:27,635 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 [2020-09-24 16:00:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-09-24 16:00:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1254. [2020-09-24 16:00:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2020-09-24 16:00:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1558 transitions. [2020-09-24 16:00:27,692 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1558 transitions. Word has length 230 [2020-09-24 16:00:27,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:27,693 INFO L479 AbstractCegarLoop]: Abstraction has 1254 states and 1558 transitions. [2020-09-24 16:00:27,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:27,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1558 transitions. [2020-09-24 16:00:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 16:00:27,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:27,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:27,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 16:00:27,699 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:27,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1305865704, now seen corresponding path program 1 times [2020-09-24 16:00:27,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:27,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850123268] [2020-09-24 16:00:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,733 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,733 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,733 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,733 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-24 16:00:27,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:27,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-24 16:00:27,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 16:00:27,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:27,777 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:27,777 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:27,777 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:27,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:27,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:27,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:27,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:27,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:27,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850123268] [2020-09-24 16:00:27,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:27,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:27,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648924046] [2020-09-24 16:00:27,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:27,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:27,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:27,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:27,812 INFO L87 Difference]: Start difference. First operand 1254 states and 1558 transitions. Second operand 3 states. [2020-09-24 16:00:27,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:27,981 INFO L93 Difference]: Finished difference Result 2446 states and 3077 transitions. [2020-09-24 16:00:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:27,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-09-24 16:00:27,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:27,988 INFO L225 Difference]: With dead ends: 2446 [2020-09-24 16:00:27,989 INFO L226 Difference]: Without dead ends: 1347 [2020-09-24 16:00:27,991 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 [2020-09-24 16:00:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-09-24 16:00:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1316. [2020-09-24 16:00:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-09-24 16:00:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1632 transitions. [2020-09-24 16:00:28,030 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1632 transitions. Word has length 230 [2020-09-24 16:00:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:28,031 INFO L479 AbstractCegarLoop]: Abstraction has 1316 states and 1632 transitions. [2020-09-24 16:00:28,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1632 transitions. [2020-09-24 16:00:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-24 16:00:28,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:28,036 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:28,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 16:00:28,037 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:28,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:28,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1647539560, now seen corresponding path program 1 times [2020-09-24 16:00:28,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:28,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141131395] [2020-09-24 16:00:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,083 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,084 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,084 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-24 16:00:28,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:28,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-24 16:00:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 16:00:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:28,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,146 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,146 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,147 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,147 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:28,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:28,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:28,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141131395] [2020-09-24 16:00:28,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:28,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:28,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398315258] [2020-09-24 16:00:28,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:28,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:28,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:28,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:28,210 INFO L87 Difference]: Start difference. First operand 1316 states and 1632 transitions. Second operand 3 states. [2020-09-24 16:00:28,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:28,418 INFO L93 Difference]: Finished difference Result 3048 states and 3842 transitions. [2020-09-24 16:00:28,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:28,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2020-09-24 16:00:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:28,428 INFO L225 Difference]: With dead ends: 3048 [2020-09-24 16:00:28,428 INFO L226 Difference]: Without dead ends: 1887 [2020-09-24 16:00:28,431 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 [2020-09-24 16:00:28,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2020-09-24 16:00:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1885. [2020-09-24 16:00:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-09-24 16:00:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2348 transitions. [2020-09-24 16:00:28,507 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2348 transitions. Word has length 238 [2020-09-24 16:00:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:28,508 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 2348 transitions. [2020-09-24 16:00:28,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2348 transitions. [2020-09-24 16:00:28,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 16:00:28,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:28,514 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 16:00:28,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 16:00:28,514 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:28,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:28,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1847120940, now seen corresponding path program 1 times [2020-09-24 16:00:28,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:28,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635450553] [2020-09-24 16:00:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,550 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,550 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,551 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,551 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 16:00:28,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:28,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:28,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-24 16:00:28,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 16:00:28,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,593 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,593 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,593 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,593 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:28,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:28,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:28,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:28,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 16:00:28,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635450553] [2020-09-24 16:00:28,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:28,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:28,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889692732] [2020-09-24 16:00:28,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:28,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:28,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:28,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:28,628 INFO L87 Difference]: Start difference. First operand 1885 states and 2348 transitions. Second operand 3 states. [2020-09-24 16:00:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:28,735 INFO L93 Difference]: Finished difference Result 3086 states and 3869 transitions. [2020-09-24 16:00:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:28,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-09-24 16:00:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:28,741 INFO L225 Difference]: With dead ends: 3086 [2020-09-24 16:00:28,742 INFO L226 Difference]: Without dead ends: 1356 [2020-09-24 16:00:28,745 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 [2020-09-24 16:00:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2020-09-24 16:00:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1356. [2020-09-24 16:00:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-09-24 16:00:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1679 transitions. [2020-09-24 16:00:28,783 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1679 transitions. Word has length 240 [2020-09-24 16:00:28,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:28,784 INFO L479 AbstractCegarLoop]: Abstraction has 1356 states and 1679 transitions. [2020-09-24 16:00:28,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1679 transitions. [2020-09-24 16:00:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-24 16:00:28,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:28,788 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 16:00:28,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 16:00:28,789 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:28,789 INFO L82 PathProgramCache]: Analyzing trace with hash 400073983, now seen corresponding path program 1 times [2020-09-24 16:00:28,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:28,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971818124] [2020-09-24 16:00:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,826 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,827 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,827 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,827 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 16:00:28,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:28,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-24 16:00:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:00:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:28,876 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:28,876 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:28,876 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:28,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:28,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:28,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:28,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:28,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:28,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:28,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:28,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:28,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971818124] [2020-09-24 16:00:28,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:28,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:28,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477907346] [2020-09-24 16:00:28,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:28,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:28,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:28,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:28,911 INFO L87 Difference]: Start difference. First operand 1356 states and 1679 transitions. Second operand 4 states. [2020-09-24 16:00:29,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:29,337 INFO L93 Difference]: Finished difference Result 4066 states and 5135 transitions. [2020-09-24 16:00:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:29,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-09-24 16:00:29,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:29,351 INFO L225 Difference]: With dead ends: 4066 [2020-09-24 16:00:29,351 INFO L226 Difference]: Without dead ends: 2865 [2020-09-24 16:00:29,355 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 [2020-09-24 16:00:29,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2020-09-24 16:00:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1458. [2020-09-24 16:00:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-09-24 16:00:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1793 transitions. [2020-09-24 16:00:29,414 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1793 transitions. Word has length 241 [2020-09-24 16:00:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:29,415 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1793 transitions. [2020-09-24 16:00:29,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1793 transitions. [2020-09-24 16:00:29,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-24 16:00:29,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:29,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 16:00:29,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 16:00:29,421 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:29,421 INFO L82 PathProgramCache]: Analyzing trace with hash -255766369, now seen corresponding path program 1 times [2020-09-24 16:00:29,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:29,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747239940] [2020-09-24 16:00:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:29,462 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:29,463 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:29,463 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:29,463 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:29,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 16:00:29,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:29,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:29,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:29,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-24 16:00:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:00:29,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:29,527 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:29,527 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:29,528 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:29,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:29,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 16:00:29,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747239940] [2020-09-24 16:00:29,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:29,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:29,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188998076] [2020-09-24 16:00:29,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:29,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:29,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:29,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:29,585 INFO L87 Difference]: Start difference. First operand 1458 states and 1793 transitions. Second operand 4 states. [2020-09-24 16:00:29,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:29,965 INFO L93 Difference]: Finished difference Result 4146 states and 5179 transitions. [2020-09-24 16:00:29,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:29,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-09-24 16:00:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:29,979 INFO L225 Difference]: With dead ends: 4146 [2020-09-24 16:00:29,980 INFO L226 Difference]: Without dead ends: 2843 [2020-09-24 16:00:29,983 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 [2020-09-24 16:00:29,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2020-09-24 16:00:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1464. [2020-09-24 16:00:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1464 states. [2020-09-24 16:00:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1799 transitions. [2020-09-24 16:00:30,033 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1799 transitions. Word has length 241 [2020-09-24 16:00:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,034 INFO L479 AbstractCegarLoop]: Abstraction has 1464 states and 1799 transitions. [2020-09-24 16:00:30,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1799 transitions. [2020-09-24 16:00:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-24 16:00:30,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,038 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] [2020-09-24 16:00:30,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 16:00:30,039 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1099402533, now seen corresponding path program 1 times [2020-09-24 16:00:30,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092392130] [2020-09-24 16:00:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,075 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,075 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-24 16:00:30,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:30,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-24 16:00:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 16:00:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,121 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,121 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,121 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,121 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:30,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:30,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 16:00:30,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092392130] [2020-09-24 16:00:30,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:30,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:30,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365523760] [2020-09-24 16:00:30,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:30,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:30,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:30,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,171 INFO L87 Difference]: Start difference. First operand 1464 states and 1799 transitions. Second operand 3 states. [2020-09-24 16:00:30,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:30,385 INFO L93 Difference]: Finished difference Result 2916 states and 3627 transitions. [2020-09-24 16:00:30,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:30,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2020-09-24 16:00:30,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:30,394 INFO L225 Difference]: With dead ends: 2916 [2020-09-24 16:00:30,394 INFO L226 Difference]: Without dead ends: 1607 [2020-09-24 16:00:30,398 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 [2020-09-24 16:00:30,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-09-24 16:00:30,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1530. [2020-09-24 16:00:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2020-09-24 16:00:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1877 transitions. [2020-09-24 16:00:30,458 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 1877 transitions. Word has length 263 [2020-09-24 16:00:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,458 INFO L479 AbstractCegarLoop]: Abstraction has 1530 states and 1877 transitions. [2020-09-24 16:00:30,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 1877 transitions. [2020-09-24 16:00:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-24 16:00:30,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 16:00:30,464 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,465 INFO L82 PathProgramCache]: Analyzing trace with hash -962704645, now seen corresponding path program 1 times [2020-09-24 16:00:30,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467219733] [2020-09-24 16:00:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,498 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,498 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,498 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,498 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 16:00:30,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:30,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-09-24 16:00:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:00:30,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,544 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,544 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,544 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,544 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:30,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:30,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 16:00:30,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467219733] [2020-09-24 16:00:30,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:30,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:30,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780351324] [2020-09-24 16:00:30,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:30,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:30,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:30,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:30,606 INFO L87 Difference]: Start difference. First operand 1530 states and 1877 transitions. Second operand 3 states. [2020-09-24 16:00:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:30,649 INFO L93 Difference]: Finished difference Result 2937 states and 3635 transitions. [2020-09-24 16:00:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:30,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2020-09-24 16:00:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:30,656 INFO L225 Difference]: With dead ends: 2937 [2020-09-24 16:00:30,656 INFO L226 Difference]: Without dead ends: 1562 [2020-09-24 16:00:30,660 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 [2020-09-24 16:00:30,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2020-09-24 16:00:30,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1558. [2020-09-24 16:00:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-09-24 16:00:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 1909 transitions. [2020-09-24 16:00:30,697 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 1909 transitions. Word has length 271 [2020-09-24 16:00:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,698 INFO L479 AbstractCegarLoop]: Abstraction has 1558 states and 1909 transitions. [2020-09-24 16:00:30,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 1909 transitions. [2020-09-24 16:00:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-24 16:00:30,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,702 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 16:00:30,703 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1268615101, now seen corresponding path program 1 times [2020-09-24 16:00:30,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446888209] [2020-09-24 16:00:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,744 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,744 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,744 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-24 16:00:30,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:30,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-09-24 16:00:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 16:00:30,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:30,800 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:30,800 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:30,800 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:30,801 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:30,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:30,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:30,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 16:00:30,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446888209] [2020-09-24 16:00:30,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:30,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:30,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079180477] [2020-09-24 16:00:30,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:30,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:30,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:30,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:30,845 INFO L87 Difference]: Start difference. First operand 1558 states and 1909 transitions. Second operand 4 states. [2020-09-24 16:00:31,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,237 INFO L93 Difference]: Finished difference Result 4542 states and 5653 transitions. [2020-09-24 16:00:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:31,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 272 [2020-09-24 16:00:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,251 INFO L225 Difference]: With dead ends: 4542 [2020-09-24 16:00:31,252 INFO L226 Difference]: Without dead ends: 3139 [2020-09-24 16:00:31,255 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 [2020-09-24 16:00:31,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-09-24 16:00:31,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 1564. [2020-09-24 16:00:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-09-24 16:00:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1915 transitions. [2020-09-24 16:00:31,305 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1915 transitions. Word has length 272 [2020-09-24 16:00:31,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:31,305 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 1915 transitions. [2020-09-24 16:00:31,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1915 transitions. [2020-09-24 16:00:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-09-24 16:00:31,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:31,310 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:31,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 16:00:31,310 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:31,310 INFO L82 PathProgramCache]: Analyzing trace with hash 576887043, now seen corresponding path program 1 times [2020-09-24 16:00:31,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:31,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615060568] [2020-09-24 16:00:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,353 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,354 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-09-24 16:00:31,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:31,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 242 [2020-09-24 16:00:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 16:00:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,409 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:31,409 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,409 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:31,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:31,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:31,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 16:00:31,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615060568] [2020-09-24 16:00:31,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:31,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:31,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094370429] [2020-09-24 16:00:31,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:31,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:31,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:31,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:31,484 INFO L87 Difference]: Start difference. First operand 1564 states and 1915 transitions. Second operand 4 states. [2020-09-24 16:00:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:31,940 INFO L93 Difference]: Finished difference Result 4490 states and 5615 transitions. [2020-09-24 16:00:31,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:31,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 292 [2020-09-24 16:00:31,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:31,957 INFO L225 Difference]: With dead ends: 4490 [2020-09-24 16:00:31,963 INFO L226 Difference]: Without dead ends: 3081 [2020-09-24 16:00:31,968 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 [2020-09-24 16:00:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2020-09-24 16:00:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 1576. [2020-09-24 16:00:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-09-24 16:00:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1921 transitions. [2020-09-24 16:00:32,020 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1921 transitions. Word has length 292 [2020-09-24 16:00:32,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:32,021 INFO L479 AbstractCegarLoop]: Abstraction has 1576 states and 1921 transitions. [2020-09-24 16:00:32,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:32,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1921 transitions. [2020-09-24 16:00:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-24 16:00:32,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:32,025 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:32,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 16:00:32,026 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 794458964, now seen corresponding path program 1 times [2020-09-24 16:00:32,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:32,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654283849] [2020-09-24 16:00:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:32,068 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:32,068 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:32,068 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:32,069 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:32,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-09-24 16:00:32,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:32,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:32,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:32,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-09-24 16:00:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:00:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:32,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:32,117 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:32,117 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:32,118 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:32,118 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:32,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:32,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:32,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:32,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:32,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-24 16:00:32,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654283849] [2020-09-24 16:00:32,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:32,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:32,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757028018] [2020-09-24 16:00:32,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:32,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:32,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:32,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:32,162 INFO L87 Difference]: Start difference. First operand 1576 states and 1921 transitions. Second operand 3 states. [2020-09-24 16:00:32,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:32,213 INFO L93 Difference]: Finished difference Result 4372 states and 5387 transitions. [2020-09-24 16:00:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:32,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2020-09-24 16:00:32,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:32,220 INFO L225 Difference]: With dead ends: 4372 [2020-09-24 16:00:32,220 INFO L226 Difference]: Without dead ends: 2951 [2020-09-24 16:00:32,224 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 [2020-09-24 16:00:32,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-09-24 16:00:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1578. [2020-09-24 16:00:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-09-24 16:00:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 1923 transitions. [2020-09-24 16:00:32,264 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 1923 transitions. Word has length 299 [2020-09-24 16:00:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:32,265 INFO L479 AbstractCegarLoop]: Abstraction has 1578 states and 1923 transitions. [2020-09-24 16:00:32,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 1923 transitions. [2020-09-24 16:00:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-24 16:00:32,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:32,271 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:32,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-24 16:00:32,272 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:32,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1359318092, now seen corresponding path program 1 times [2020-09-24 16:00:32,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:32,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679533045] [2020-09-24 16:00:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:32,338 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:32,338 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:32,339 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:32,339 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:32,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-09-24 16:00:32,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:32,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:32,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-09-24 16:00:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 16:00:32,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:32,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:32,397 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:32,397 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:32,397 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:32,397 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:32,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:32,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:32,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:32,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-24 16:00:32,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679533045] [2020-09-24 16:00:32,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:32,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:32,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890377371] [2020-09-24 16:00:32,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:32,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:32,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:32,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:32,456 INFO L87 Difference]: Start difference. First operand 1578 states and 1923 transitions. Second operand 3 states. [2020-09-24 16:00:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:32,643 INFO L93 Difference]: Finished difference Result 3142 states and 3873 transitions. [2020-09-24 16:00:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:32,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2020-09-24 16:00:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:32,647 INFO L225 Difference]: With dead ends: 3142 [2020-09-24 16:00:32,647 INFO L226 Difference]: Without dead ends: 1719 [2020-09-24 16:00:32,650 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 [2020-09-24 16:00:32,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-09-24 16:00:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1658. [2020-09-24 16:00:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-09-24 16:00:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2017 transitions. [2020-09-24 16:00:32,706 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2017 transitions. Word has length 299 [2020-09-24 16:00:32,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:32,706 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2017 transitions. [2020-09-24 16:00:32,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2017 transitions. [2020-09-24 16:00:32,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-24 16:00:32,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:32,711 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:32,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-24 16:00:32,712 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:32,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:32,713 INFO L82 PathProgramCache]: Analyzing trace with hash 893866712, now seen corresponding path program 1 times [2020-09-24 16:00:32,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:32,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922029980] [2020-09-24 16:00:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:32,766 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:32,767 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:32,767 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:32,767 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:32,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-09-24 16:00:32,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:32,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 242 [2020-09-24 16:00:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 16:00:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:32,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:32,836 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:32,837 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:32,837 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:32,837 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:32,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:32,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:32,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:32,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:32,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:32,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:32,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 76 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 16:00:32,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922029980] [2020-09-24 16:00:32,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:32,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 16:00:32,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909526478] [2020-09-24 16:00:32,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:32,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:32,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:32,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:32,900 INFO L87 Difference]: Start difference. First operand 1658 states and 2017 transitions. Second operand 4 states. [2020-09-24 16:00:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:33,136 INFO L93 Difference]: Finished difference Result 3367 states and 4105 transitions. [2020-09-24 16:00:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:33,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2020-09-24 16:00:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:33,141 INFO L225 Difference]: With dead ends: 3367 [2020-09-24 16:00:33,141 INFO L226 Difference]: Without dead ends: 1814 [2020-09-24 16:00:33,145 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 [2020-09-24 16:00:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-09-24 16:00:33,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1760. [2020-09-24 16:00:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1760 states. [2020-09-24 16:00:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2125 transitions. [2020-09-24 16:00:33,185 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2125 transitions. Word has length 302 [2020-09-24 16:00:33,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:33,186 INFO L479 AbstractCegarLoop]: Abstraction has 1760 states and 2125 transitions. [2020-09-24 16:00:33,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2125 transitions. [2020-09-24 16:00:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-09-24 16:00:33,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:33,192 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:33,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-24 16:00:33,192 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:33,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:33,193 INFO L82 PathProgramCache]: Analyzing trace with hash -444397713, now seen corresponding path program 1 times [2020-09-24 16:00:33,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:33,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769007732] [2020-09-24 16:00:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:33,239 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:33,239 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:33,239 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:33,240 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:33,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-09-24 16:00:33,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:33,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:33,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-09-24 16:00:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 16:00:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:33,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:33,300 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:33,300 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:33,300 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:33,300 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:33,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:33,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:33,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:33,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:33,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:33,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:33,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:33,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 86 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-24 16:00:33,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769007732] [2020-09-24 16:00:33,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:33,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 16:00:33,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875099626] [2020-09-24 16:00:33,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:33,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:33,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:33,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:33,353 INFO L87 Difference]: Start difference. First operand 1760 states and 2125 transitions. Second operand 4 states. [2020-09-24 16:00:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:33,662 INFO L93 Difference]: Finished difference Result 4428 states and 5368 transitions. [2020-09-24 16:00:33,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:33,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2020-09-24 16:00:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:33,668 INFO L225 Difference]: With dead ends: 4428 [2020-09-24 16:00:33,669 INFO L226 Difference]: Without dead ends: 2723 [2020-09-24 16:00:33,672 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 [2020-09-24 16:00:33,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2020-09-24 16:00:33,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2232. [2020-09-24 16:00:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2232 states. [2020-09-24 16:00:33,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 2679 transitions. [2020-09-24 16:00:33,736 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 2679 transitions. Word has length 306 [2020-09-24 16:00:33,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:33,737 INFO L479 AbstractCegarLoop]: Abstraction has 2232 states and 2679 transitions. [2020-09-24 16:00:33,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 2679 transitions. [2020-09-24 16:00:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-09-24 16:00:33,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:33,743 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:33,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-24 16:00:33,744 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:33,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:33,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1267878306, now seen corresponding path program 1 times [2020-09-24 16:00:33,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:33,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374622762] [2020-09-24 16:00:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:33,799 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:33,799 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:33,800 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:33,800 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:33,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-09-24 16:00:33,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:33,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-09-24 16:00:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:00:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:33,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:33,869 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:33,869 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:33,869 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:33,869 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:33,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:33,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:33,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:33,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:33,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-24 16:00:33,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374622762] [2020-09-24 16:00:33,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:33,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:33,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384395280] [2020-09-24 16:00:33,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:33,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:33,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:33,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:33,975 INFO L87 Difference]: Start difference. First operand 2232 states and 2679 transitions. Second operand 4 states. [2020-09-24 16:00:34,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:34,467 INFO L93 Difference]: Finished difference Result 6335 states and 7726 transitions. [2020-09-24 16:00:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:34,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2020-09-24 16:00:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:34,478 INFO L225 Difference]: With dead ends: 6335 [2020-09-24 16:00:34,478 INFO L226 Difference]: Without dead ends: 4258 [2020-09-24 16:00:34,483 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 [2020-09-24 16:00:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2020-09-24 16:00:34,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 2280. [2020-09-24 16:00:34,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2020-09-24 16:00:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 2727 transitions. [2020-09-24 16:00:34,546 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 2727 transitions. Word has length 309 [2020-09-24 16:00:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:34,546 INFO L479 AbstractCegarLoop]: Abstraction has 2280 states and 2727 transitions. [2020-09-24 16:00:34,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 2727 transitions. [2020-09-24 16:00:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-24 16:00:34,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:34,551 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:34,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-24 16:00:34,551 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:34,553 INFO L82 PathProgramCache]: Analyzing trace with hash -747447560, now seen corresponding path program 1 times [2020-09-24 16:00:34,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:34,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536796013] [2020-09-24 16:00:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:34,608 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:34,609 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:34,609 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:34,609 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:34,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-09-24 16:00:34,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:34,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 242 [2020-09-24 16:00:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 16:00:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:34,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:34,694 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:34,694 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:34,695 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:34,695 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:34,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:34,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:34,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 16:00:34,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536796013] [2020-09-24 16:00:34,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:34,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 16:00:34,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148072446] [2020-09-24 16:00:34,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:00:34,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:34,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:00:34,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:34,777 INFO L87 Difference]: Start difference. First operand 2280 states and 2727 transitions. Second operand 5 states. [2020-09-24 16:00:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:35,311 INFO L93 Difference]: Finished difference Result 6469 states and 7842 transitions. [2020-09-24 16:00:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:00:35,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-09-24 16:00:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:35,320 INFO L225 Difference]: With dead ends: 6469 [2020-09-24 16:00:35,320 INFO L226 Difference]: Without dead ends: 4294 [2020-09-24 16:00:35,326 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 [2020-09-24 16:00:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2020-09-24 16:00:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 2208. [2020-09-24 16:00:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2208 states. [2020-09-24 16:00:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 2655 transitions. [2020-09-24 16:00:35,390 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 2655 transitions. Word has length 310 [2020-09-24 16:00:35,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:35,391 INFO L479 AbstractCegarLoop]: Abstraction has 2208 states and 2655 transitions. [2020-09-24 16:00:35,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:00:35,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 2655 transitions. [2020-09-24 16:00:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-09-24 16:00:35,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:35,396 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:35,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-24 16:00:35,396 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:35,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:35,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1909019013, now seen corresponding path program 1 times [2020-09-24 16:00:35,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:35,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708312740] [2020-09-24 16:00:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,442 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,442 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-09-24 16:00:35,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:35,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 276 [2020-09-24 16:00:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 16:00:35,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:35,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,540 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,541 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,541 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,541 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:35,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:35,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:35,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:35,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-09-24 16:00:35,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708312740] [2020-09-24 16:00:35,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:35,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:35,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413019066] [2020-09-24 16:00:35,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:35,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:35,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:35,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:35,598 INFO L87 Difference]: Start difference. First operand 2208 states and 2655 transitions. Second operand 4 states. [2020-09-24 16:00:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:35,916 INFO L93 Difference]: Finished difference Result 4489 states and 5409 transitions. [2020-09-24 16:00:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:35,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2020-09-24 16:00:35,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:35,921 INFO L225 Difference]: With dead ends: 4489 [2020-09-24 16:00:35,921 INFO L226 Difference]: Without dead ends: 2394 [2020-09-24 16:00:35,925 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 [2020-09-24 16:00:35,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2020-09-24 16:00:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 2154. [2020-09-24 16:00:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2154 states. [2020-09-24 16:00:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2597 transitions. [2020-09-24 16:00:35,976 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2597 transitions. Word has length 316 [2020-09-24 16:00:35,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:35,977 INFO L479 AbstractCegarLoop]: Abstraction has 2154 states and 2597 transitions. [2020-09-24 16:00:35,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2597 transitions. [2020-09-24 16:00:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-24 16:00:35,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:35,983 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:35,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-24 16:00:35,983 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:35,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:35,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1455323989, now seen corresponding path program 1 times [2020-09-24 16:00:35,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:35,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003795142] [2020-09-24 16:00:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,031 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,031 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,031 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,031 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-09-24 16:00:36,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 285 [2020-09-24 16:00:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 16:00:36,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,084 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,084 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,084 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,084 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:36,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:36,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:36,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-09-24 16:00:36,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003795142] [2020-09-24 16:00:36,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:36,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:36,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806873075] [2020-09-24 16:00:36,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:36,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:36,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:36,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,149 INFO L87 Difference]: Start difference. First operand 2154 states and 2597 transitions. Second operand 3 states. [2020-09-24 16:00:36,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:36,238 INFO L93 Difference]: Finished difference Result 6044 states and 7338 transitions. [2020-09-24 16:00:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:36,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 328 [2020-09-24 16:00:36,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:36,246 INFO L225 Difference]: With dead ends: 6044 [2020-09-24 16:00:36,246 INFO L226 Difference]: Without dead ends: 4045 [2020-09-24 16:00:36,252 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 [2020-09-24 16:00:36,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2020-09-24 16:00:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 4041. [2020-09-24 16:00:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4041 states. [2020-09-24 16:00:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 4891 transitions. [2020-09-24 16:00:36,354 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 4891 transitions. Word has length 328 [2020-09-24 16:00:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:36,354 INFO L479 AbstractCegarLoop]: Abstraction has 4041 states and 4891 transitions. [2020-09-24 16:00:36,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:36,355 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 4891 transitions. [2020-09-24 16:00:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-09-24 16:00:36,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:36,362 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:36,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-24 16:00:36,362 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:36,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:36,363 INFO L82 PathProgramCache]: Analyzing trace with hash 837433633, now seen corresponding path program 1 times [2020-09-24 16:00:36,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:36,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610094111] [2020-09-24 16:00:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,409 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,409 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,409 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-09-24 16:00:36,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:36,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-09-24 16:00:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 16:00:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,468 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,468 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:36,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:36,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-09-24 16:00:36,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610094111] [2020-09-24 16:00:36,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:36,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:36,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008152927] [2020-09-24 16:00:36,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:36,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:36,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:36,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,575 INFO L87 Difference]: Start difference. First operand 4041 states and 4891 transitions. Second operand 3 states. [2020-09-24 16:00:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:36,816 INFO L93 Difference]: Finished difference Result 8043 states and 9787 transitions. [2020-09-24 16:00:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:36,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-09-24 16:00:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:36,825 INFO L225 Difference]: With dead ends: 8043 [2020-09-24 16:00:36,826 INFO L226 Difference]: Without dead ends: 4157 [2020-09-24 16:00:36,833 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 [2020-09-24 16:00:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2020-09-24 16:00:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 4133. [2020-09-24 16:00:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4133 states. [2020-09-24 16:00:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 4983 transitions. [2020-09-24 16:00:36,934 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 4983 transitions. Word has length 329 [2020-09-24 16:00:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:36,935 INFO L479 AbstractCegarLoop]: Abstraction has 4133 states and 4983 transitions. [2020-09-24 16:00:36,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 4983 transitions. [2020-09-24 16:00:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-09-24 16:00:36,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:36,940 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:36,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-24 16:00:36,940 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:36,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1972793019, now seen corresponding path program 1 times [2020-09-24 16:00:36,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:36,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959091397] [2020-09-24 16:00:36,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:37,018 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:37,019 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:37,019 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:37,019 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:37,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-09-24 16:00:37,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:37,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:00:37,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-09-24 16:00:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:00:37,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:37,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:37,111 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:37,111 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:37,111 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:37,114 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:37,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:37,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:37,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:37,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-09-24 16:00:37,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959091397] [2020-09-24 16:00:37,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:37,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:37,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739552420] [2020-09-24 16:00:37,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:37,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:37,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:37,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:37,181 INFO L87 Difference]: Start difference. First operand 4133 states and 4983 transitions. Second operand 3 states. [2020-09-24 16:00:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:37,487 INFO L93 Difference]: Finished difference Result 11853 states and 14327 transitions. [2020-09-24 16:00:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:37,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-09-24 16:00:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:37,502 INFO L225 Difference]: With dead ends: 11853 [2020-09-24 16:00:37,503 INFO L226 Difference]: Without dead ends: 7875 [2020-09-24 16:00:37,511 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 [2020-09-24 16:00:37,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7875 states. [2020-09-24 16:00:37,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7875 to 4129. [2020-09-24 16:00:37,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4129 states. [2020-09-24 16:00:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 4971 transitions. [2020-09-24 16:00:37,682 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 4971 transitions. Word has length 331 [2020-09-24 16:00:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:37,682 INFO L479 AbstractCegarLoop]: Abstraction has 4129 states and 4971 transitions. [2020-09-24 16:00:37,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 4971 transitions. [2020-09-24 16:00:37,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-09-24 16:00:37,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:37,689 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:37,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-24 16:00:37,690 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:37,690 INFO L82 PathProgramCache]: Analyzing trace with hash -522042299, now seen corresponding path program 1 times [2020-09-24 16:00:37,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:37,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146232161] [2020-09-24 16:00:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:00:37,749 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:00:37,749 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:00:37,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-24 16:00:37,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:00:37 BoogieIcfgContainer [2020-09-24 16:00:37,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:00:37,833 INFO L168 Benchmark]: Toolchain (without parser) took 18807.09 ms. Allocated memory was 141.0 MB in the beginning and 747.6 MB in the end (delta: 606.6 MB). Free memory was 102.5 MB in the beginning and 184.2 MB in the end (delta: -81.7 MB). Peak memory consumption was 524.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,837 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:00:37,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.20 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 179.3 MB in the end (delta: -77.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,838 INFO L168 Benchmark]: Boogie Preprocessor took 95.33 ms. Allocated memory is still 205.0 MB. Free memory was 179.3 MB in the beginning and 176.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,838 INFO L168 Benchmark]: RCFGBuilder took 1206.92 ms. Allocated memory is still 205.0 MB. Free memory was 176.4 MB in the beginning and 98.6 MB in the end (delta: 77.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,839 INFO L168 Benchmark]: TraceAbstraction took 16868.88 ms. Allocated memory was 205.0 MB in the beginning and 747.6 MB in the end (delta: 542.6 MB). Free memory was 98.6 MB in the beginning and 184.2 MB in the end (delta: -85.6 MB). Peak memory consumption was 457.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,843 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 622.20 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 179.3 MB in the end (delta: -77.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.33 ms. Allocated memory is still 205.0 MB. Free memory was 179.3 MB in the beginning and 176.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1206.92 ms. Allocated memory is still 205.0 MB. Free memory was 176.4 MB in the beginning and 98.6 MB in the end (delta: 77.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16868.88 ms. Allocated memory was 205.0 MB in the beginning and 747.6 MB in the end (delta: 542.6 MB). Free memory was 98.6 MB in the beginning and 184.2 MB in the end (delta: -85.6 MB). Peak memory consumption was 457.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L702] int s ; [L703] int tmp ; [L707] s = 8464 [L708] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int() ; [L21] int s__rwstate ; [L22] int s__init_buf___0 = 1; [L23] int s__debug = __VERIFIER_nondet_int() ; [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int() ; [L26] int s__options = __VERIFIER_nondet_int() ; [L27] int s__verify_mode = __VERIFIER_nondet_int() ; [L28] int s__session__peer = __VERIFIER_nondet_int() ; [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L30] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message ; [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength ; [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 = __VERIFIER_nondet_long() ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int tmp___10 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] unsigned long __cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] __cil_tmp56 = 256345 [L307] skip = 1 [L318] s__state = 8528 [L319] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L323] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L324] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L326] __cil_tmp57 = (unsigned long )s__options [L327] COND TRUE __cil_tmp57 + 2097152UL [L328] s__s3__tmp__use_rsa_tmp = 1 [L333] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(blastFlag == 3) [L365] COND FALSE !(ret <= 0) [L382] s__state = 8544 [L383] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND TRUE s__state == 8544 [L387] COND TRUE s__verify_mode + 1 [L388] COND TRUE s__session__peer != 0 [L389] COND TRUE s__verify_mode + 4 [L390] s__verify_mode = 123 [L391] skip = 1 [L392] s__s3__tmp__cert_request = 0 [L393] s__state = 8560 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND TRUE s__state == 8560 [L437] ret = __VERIFIER_nondet_int() [L438] COND FALSE !(ret <= 0) [L441] s__s3__tmp__next_state___0 = 8576 [L442] s__state = 8448 [L443] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND TRUE ! s__s3__tmp__reuse_message [L653] COND TRUE ! skip [L654] COND TRUE state == 8560 [L655] COND TRUE s__state == 8448 [L656] COND TRUE s__verify_mode != -1 [L657] COND TRUE s__verify_mode != -2 [L658] COND TRUE __cil_tmp61 != 9021 [L659] COND TRUE __cil_tmp58 != 4294967294 [L660] COND TRUE blastFlag != 4 [L661] COND TRUE tmp___7 != 1024 [L697] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 471 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.7s, OverallIterations: 32, TraceHistogramMax: 6, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19889 SDtfs, 10607 SDslu, 22720 SDs, 0 SdLazy, 4888 SolverSat, 516 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4133occurred in iteration=30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 31 MinimizatonAttempts, 17299 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 8114 NumberOfCodeBlocks, 8114 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 7750 ConstructedInterpolants, 0 QuantifiedInterpolants, 2612128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 28 PerfectInterpolantSequences, 2798/2812 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...