/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -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 0.1.25-5644d1e-m [2020-08-19 04:23:26,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:23:26,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:23:26,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:23:26,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:23:26,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:23:26,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:23:26,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:23:26,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:23:26,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:23:26,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:23:26,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:23:26,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:23:26,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:23:26,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:23:26,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:23:26,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:23:26,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:23:26,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:23:26,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:23:26,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:23:26,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:23:26,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:23:26,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:23:26,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:23:26,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:23:26,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:23:26,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:23:26,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:23:26,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:23:26,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:23:26,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:23:26,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:23:26,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:23:26,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:23:26,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:23:26,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:23:26,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:23:26,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:23:26,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:23:26,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:23:26,704 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 [2020-08-19 04:23:26,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:23:26,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:23:26,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:23:26,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:23:26,753 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:23:26,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:23:26,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:23:26,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:23:26,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:23:26,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:23:26,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:23:26,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:23:26,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:23:26,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:23:26,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:23:26,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:23:26,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:23:26,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:23:26,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:23:26,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:23:26,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:23:26,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:23:26,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:23:26,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:23:26,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:23:26,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:23:26,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:23:26,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:23:26,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:23:26,761 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:23:27,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:23:27,113 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:23:27,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:23:27,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:23:27,119 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:23:27,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-19 04:23:27,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71bc49073/43e34f3dd24d4a9fb51a829705c58825/FLAGeccbd1f5d [2020-08-19 04:23:27,714 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:23:27,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-19 04:23:27,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71bc49073/43e34f3dd24d4a9fb51a829705c58825/FLAGeccbd1f5d [2020-08-19 04:23:28,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71bc49073/43e34f3dd24d4a9fb51a829705c58825 [2020-08-19 04:23:28,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:23:28,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:23:28,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:28,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:23:28,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:23:28,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:28" (1/1) ... [2020-08-19 04:23:28,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffbb17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28, skipping insertion in model container [2020-08-19 04:23:28,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:28" (1/1) ... [2020-08-19 04:23:28,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:23:28,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:23:28,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:28,412 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:23:28,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:28,585 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:23:28,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28 WrapperNode [2020-08-19 04:23:28,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:28,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:23:28,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:23:28,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:23:28,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28" (1/1) ... [2020-08-19 04:23:28,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28" (1/1) ... [2020-08-19 04:23:28,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28" (1/1) ... [2020-08-19 04:23:28,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28" (1/1) ... [2020-08-19 04:23:28,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28" (1/1) ... [2020-08-19 04:23:28,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28" (1/1) ... [2020-08-19 04:23:28,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28" (1/1) ... [2020-08-19 04:23:28,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:23:28,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:23:28,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:23:28,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:23:28,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28" (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 [2020-08-19 04:23:28,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:23:28,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:23:28,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-19 04:23:28,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:23:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:23:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 04:23:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:23:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 04:23:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 04:23:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-19 04:23:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:23:28,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:23:28,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:23:28,916 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 04:23:29,535 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-19 04:23:29,536 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-19 04:23:29,548 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:23:29,548 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 04:23:29,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:29 BoogieIcfgContainer [2020-08-19 04:23:29,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:23:29,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:23:29,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:23:29,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:23:29,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:23:28" (1/3) ... [2020-08-19 04:23:29,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41328085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:29, skipping insertion in model container [2020-08-19 04:23:29,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:28" (2/3) ... [2020-08-19 04:23:29,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41328085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:29, skipping insertion in model container [2020-08-19 04:23:29,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:29" (3/3) ... [2020-08-19 04:23:29,564 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-19 04:23:29,576 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:23:29,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:23:29,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:23:29,629 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:23:29,629 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:23:29,629 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:23:29,629 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:23:29,630 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:23:29,630 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:23:29,630 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:23:29,630 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:23:29,655 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 04:23:29,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 04:23:29,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:29,666 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] [2020-08-19 04:23:29,666 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:29,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-19 04:23:29,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:29,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43565236] [2020-08-19 04:23:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:29,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43565236] [2020-08-19 04:23:30,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:30,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:30,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469708357] [2020-08-19 04:23:30,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:30,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:30,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:30,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:30,025 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-19 04:23:30,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:30,421 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-19 04:23:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:30,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-19 04:23:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:30,439 INFO L225 Difference]: With dead ends: 362 [2020-08-19 04:23:30,439 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 04:23:30,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:30,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 04:23:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-19 04:23:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-19 04:23:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-19 04:23:30,512 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-19 04:23:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:30,512 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-19 04:23:30,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:30,513 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-19 04:23:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 04:23:30,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:30,515 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] [2020-08-19 04:23:30,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:23:30,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:30,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:30,516 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-19 04:23:30,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:30,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321364939] [2020-08-19 04:23:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:30,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:30,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321364939] [2020-08-19 04:23:30,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:30,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:30,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283120272] [2020-08-19 04:23:30,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:30,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:30,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:30,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:30,619 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-19 04:23:30,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:30,856 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-19 04:23:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:30,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 04:23:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:30,860 INFO L225 Difference]: With dead ends: 363 [2020-08-19 04:23:30,860 INFO L226 Difference]: Without dead ends: 199 [2020-08-19 04:23:30,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-19 04:23:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-19 04:23:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-19 04:23:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-19 04:23:30,880 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-19 04:23:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:30,881 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-19 04:23:30,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-19 04:23:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 04:23:30,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:30,883 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] [2020-08-19 04:23:30,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:23:30,883 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:30,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:30,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-19 04:23:30,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:30,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120242683] [2020-08-19 04:23:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:31,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120242683] [2020-08-19 04:23:31,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:31,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:31,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450703950] [2020-08-19 04:23:31,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:31,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:31,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:31,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:31,017 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-19 04:23:31,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:31,302 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-19 04:23:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:31,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 04:23:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:31,305 INFO L225 Difference]: With dead ends: 393 [2020-08-19 04:23:31,305 INFO L226 Difference]: Without dead ends: 207 [2020-08-19 04:23:31,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:31,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-19 04:23:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-19 04:23:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-19 04:23:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-19 04:23:31,343 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-19 04:23:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:31,344 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-19 04:23:31,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:31,344 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-19 04:23:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 04:23:31,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:31,353 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] [2020-08-19 04:23:31,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:23:31,354 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:31,355 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-19 04:23:31,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:31,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947838853] [2020-08-19 04:23:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:31,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947838853] [2020-08-19 04:23:31,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:31,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:31,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904423587] [2020-08-19 04:23:31,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:31,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:31,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:31,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:31,443 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-19 04:23:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:31,665 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-19 04:23:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:31,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 04:23:31,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:31,669 INFO L225 Difference]: With dead ends: 398 [2020-08-19 04:23:31,669 INFO L226 Difference]: Without dead ends: 206 [2020-08-19 04:23:31,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-19 04:23:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-19 04:23:31,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 04:23:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-19 04:23:31,693 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-19 04:23:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:31,694 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-19 04:23:31,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-19 04:23:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-19 04:23:31,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:31,697 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] [2020-08-19 04:23:31,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:23:31,697 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-19 04:23:31,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:31,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819620274] [2020-08-19 04:23:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:31,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819620274] [2020-08-19 04:23:31,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:31,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:31,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636720391] [2020-08-19 04:23:31,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:31,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:31,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:31,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:31,833 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-19 04:23:32,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:32,062 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-19 04:23:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:32,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-19 04:23:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:32,065 INFO L225 Difference]: With dead ends: 409 [2020-08-19 04:23:32,066 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 04:23:32,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:32,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 04:23:32,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 04:23:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 04:23:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-19 04:23:32,079 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-19 04:23:32,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:32,080 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-19 04:23:32,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-19 04:23:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 04:23:32,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:32,081 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] [2020-08-19 04:23:32,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:23:32,082 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:32,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:32,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-19 04:23:32,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:32,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118610906] [2020-08-19 04:23:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:32,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118610906] [2020-08-19 04:23:32,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:32,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:32,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582649899] [2020-08-19 04:23:32,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:32,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:32,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:32,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:32,139 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-19 04:23:32,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:32,343 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-19 04:23:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:32,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-19 04:23:32,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:32,346 INFO L225 Difference]: With dead ends: 409 [2020-08-19 04:23:32,346 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 04:23:32,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 04:23:32,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 04:23:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 04:23:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-19 04:23:32,371 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-19 04:23:32,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:32,371 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-19 04:23:32,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:32,372 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-19 04:23:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 04:23:32,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:32,373 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] [2020-08-19 04:23:32,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:23:32,373 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:32,374 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-19 04:23:32,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:32,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546963793] [2020-08-19 04:23:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:32,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546963793] [2020-08-19 04:23:32,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:32,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:32,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247191853] [2020-08-19 04:23:32,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:32,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:32,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:32,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:32,425 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-19 04:23:32,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:32,620 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-19 04:23:32,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:32,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-19 04:23:32,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:32,623 INFO L225 Difference]: With dead ends: 409 [2020-08-19 04:23:32,623 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 04:23:32,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:32,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 04:23:32,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 04:23:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 04:23:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-19 04:23:32,635 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-19 04:23:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:32,636 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-19 04:23:32,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:32,636 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-19 04:23:32,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 04:23:32,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:32,637 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] [2020-08-19 04:23:32,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:23:32,637 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:32,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:32,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-19 04:23:32,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:32,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122557898] [2020-08-19 04:23:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:32,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122557898] [2020-08-19 04:23:32,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:32,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:23:32,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923424958] [2020-08-19 04:23:32,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:23:32,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:32,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:23:32,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:32,721 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-19 04:23:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:33,077 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-19 04:23:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 04:23:33,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-19 04:23:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:33,081 INFO L225 Difference]: With dead ends: 605 [2020-08-19 04:23:33,081 INFO L226 Difference]: Without dead ends: 412 [2020-08-19 04:23:33,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:23:33,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-19 04:23:33,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-19 04:23:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-19 04:23:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-19 04:23:33,105 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-19 04:23:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:33,106 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-19 04:23:33,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:23:33,106 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-19 04:23:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-19 04:23:33,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:33,107 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] [2020-08-19 04:23:33,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:23:33,108 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:33,108 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-19 04:23:33,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:33,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747676405] [2020-08-19 04:23:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:33,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747676405] [2020-08-19 04:23:33,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:33,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:33,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902915634] [2020-08-19 04:23:33,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:33,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:33,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:33,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:33,185 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-19 04:23:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:33,526 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-19 04:23:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:33,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-19 04:23:33,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:33,530 INFO L225 Difference]: With dead ends: 847 [2020-08-19 04:23:33,531 INFO L226 Difference]: Without dead ends: 472 [2020-08-19 04:23:33,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:33,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-19 04:23:33,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-19 04:23:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-19 04:23:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-19 04:23:33,571 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-19 04:23:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:33,571 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-19 04:23:33,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-19 04:23:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-19 04:23:33,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:33,573 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] [2020-08-19 04:23:33,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:23:33,573 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:33,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-19 04:23:33,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:33,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376055469] [2020-08-19 04:23:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:33,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:33,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376055469] [2020-08-19 04:23:33,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:33,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:33,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556684918] [2020-08-19 04:23:33,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:33,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:33,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:33,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:33,649 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-19 04:23:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:33,918 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-19 04:23:33,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:33,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-19 04:23:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:33,922 INFO L225 Difference]: With dead ends: 936 [2020-08-19 04:23:33,923 INFO L226 Difference]: Without dead ends: 495 [2020-08-19 04:23:33,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-19 04:23:33,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-19 04:23:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-19 04:23:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-19 04:23:33,951 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-19 04:23:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:33,951 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-19 04:23:33,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:33,951 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-19 04:23:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 04:23:33,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:33,953 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:23:33,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:23:33,954 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-19 04:23:33,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:33,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899081840] [2020-08-19 04:23:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 04:23:34,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899081840] [2020-08-19 04:23:34,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:34,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:34,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015288090] [2020-08-19 04:23:34,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:34,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:34,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:34,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:34,036 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-19 04:23:34,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:34,299 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-19 04:23:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:34,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-19 04:23:34,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:34,305 INFO L225 Difference]: With dead ends: 993 [2020-08-19 04:23:34,305 INFO L226 Difference]: Without dead ends: 529 [2020-08-19 04:23:34,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:34,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-19 04:23:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-19 04:23:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 04:23:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-19 04:23:34,334 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-19 04:23:34,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:34,335 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-19 04:23:34,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:34,335 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-19 04:23:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 04:23:34,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:34,336 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:23:34,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:23:34,337 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:34,337 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-19 04:23:34,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:34,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259659568] [2020-08-19 04:23:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:34,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 04:23:34,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259659568] [2020-08-19 04:23:34,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:34,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:34,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973796446] [2020-08-19 04:23:34,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:34,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:34,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:34,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:34,409 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-19 04:23:34,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:34,663 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-19 04:23:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:34,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-19 04:23:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:34,668 INFO L225 Difference]: With dead ends: 1027 [2020-08-19 04:23:34,669 INFO L226 Difference]: Without dead ends: 529 [2020-08-19 04:23:34,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-19 04:23:34,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-19 04:23:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 04:23:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-19 04:23:34,709 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-19 04:23:34,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:34,709 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-19 04:23:34,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-19 04:23:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 04:23:34,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:34,712 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:23:34,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 04:23:34,712 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:34,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-19 04:23:34,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:34,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607513561] [2020-08-19 04:23:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 04:23:34,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607513561] [2020-08-19 04:23:34,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:34,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:34,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426850008] [2020-08-19 04:23:34,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:34,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:34,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:34,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:34,793 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-19 04:23:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:35,106 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-19 04:23:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:35,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-19 04:23:35,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:35,110 INFO L225 Difference]: With dead ends: 1074 [2020-08-19 04:23:35,111 INFO L226 Difference]: Without dead ends: 576 [2020-08-19 04:23:35,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-19 04:23:35,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-19 04:23:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-19 04:23:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-19 04:23:35,144 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-19 04:23:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:35,146 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-19 04:23:35,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-19 04:23:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 04:23:35,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:35,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2020-08-19 04:23:35,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 04:23:35,152 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:35,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-19 04:23:35,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:35,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248674361] [2020-08-19 04:23:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:35,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248674361] [2020-08-19 04:23:35,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:35,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:35,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153219897] [2020-08-19 04:23:35,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:35,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:35,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:35,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:35,269 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-19 04:23:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:35,518 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-19 04:23:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:35,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-19 04:23:35,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:35,523 INFO L225 Difference]: With dead ends: 1184 [2020-08-19 04:23:35,523 INFO L226 Difference]: Without dead ends: 623 [2020-08-19 04:23:35,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-19 04:23:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-19 04:23:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 04:23:35,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-19 04:23:35,560 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-19 04:23:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:35,560 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-19 04:23:35,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-19 04:23:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-19 04:23:35,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:35,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 04:23:35,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 04:23:35,565 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:35,566 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-19 04:23:35,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:35,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030851546] [2020-08-19 04:23:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:35,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030851546] [2020-08-19 04:23:35,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:35,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:35,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162693605] [2020-08-19 04:23:35,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:35,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:35,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:35,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:35,642 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-19 04:23:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:35,894 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-19 04:23:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:35,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-19 04:23:35,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:35,898 INFO L225 Difference]: With dead ends: 1227 [2020-08-19 04:23:35,898 INFO L226 Difference]: Without dead ends: 623 [2020-08-19 04:23:35,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:35,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-19 04:23:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-19 04:23:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 04:23:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-19 04:23:35,931 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-19 04:23:35,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:35,931 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-19 04:23:35,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-19 04:23:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 04:23:35,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:35,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 04:23:35,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 04:23:35,934 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:35,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:35,934 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-19 04:23:35,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:35,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131513691] [2020-08-19 04:23:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 04:23:36,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131513691] [2020-08-19 04:23:36,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:36,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:36,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574342824] [2020-08-19 04:23:36,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:36,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:36,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:36,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:36,013 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-19 04:23:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:36,271 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-19 04:23:36,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:36,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-19 04:23:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:36,276 INFO L225 Difference]: With dead ends: 1223 [2020-08-19 04:23:36,276 INFO L226 Difference]: Without dead ends: 619 [2020-08-19 04:23:36,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-19 04:23:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-19 04:23:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 04:23:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-19 04:23:36,306 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-19 04:23:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:36,307 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-19 04:23:36,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-19 04:23:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 04:23:36,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:36,309 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:36,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 04:23:36,310 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:36,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:36,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-19 04:23:36,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:36,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699235246] [2020-08-19 04:23:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:36,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 04:23:36,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699235246] [2020-08-19 04:23:36,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:36,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:36,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334629920] [2020-08-19 04:23:36,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:36,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:36,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:36,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:36,368 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-19 04:23:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:36,627 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-19 04:23:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:36,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-19 04:23:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:36,632 INFO L225 Difference]: With dead ends: 1281 [2020-08-19 04:23:36,632 INFO L226 Difference]: Without dead ends: 677 [2020-08-19 04:23:36,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-19 04:23:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-19 04:23:36,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 04:23:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-19 04:23:36,670 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-19 04:23:36,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:36,671 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-19 04:23:36,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-19 04:23:36,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 04:23:36,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:36,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:36,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 04:23:36,674 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:36,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:36,674 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-19 04:23:36,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:36,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896780808] [2020-08-19 04:23:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 04:23:36,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896780808] [2020-08-19 04:23:36,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:36,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:36,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044623799] [2020-08-19 04:23:36,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:36,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:36,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:36,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:36,731 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-19 04:23:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:36,966 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-19 04:23:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:36,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-19 04:23:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:36,971 INFO L225 Difference]: With dead ends: 1313 [2020-08-19 04:23:36,971 INFO L226 Difference]: Without dead ends: 677 [2020-08-19 04:23:36,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:36,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-19 04:23:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-19 04:23:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 04:23:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-19 04:23:37,007 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-19 04:23:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:37,008 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-19 04:23:37,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-19 04:23:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-19 04:23:37,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:37,010 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 04:23:37,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 04:23:37,011 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:37,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-19 04:23:37,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:37,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639835372] [2020-08-19 04:23:37,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 04:23:37,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639835372] [2020-08-19 04:23:37,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:37,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:37,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939504854] [2020-08-19 04:23:37,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:37,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:37,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:37,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:37,084 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-19 04:23:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:37,370 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-19 04:23:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:37,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-19 04:23:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:37,375 INFO L225 Difference]: With dead ends: 1349 [2020-08-19 04:23:37,375 INFO L226 Difference]: Without dead ends: 713 [2020-08-19 04:23:37,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:37,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-19 04:23:37,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-19 04:23:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-19 04:23:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-19 04:23:37,409 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-19 04:23:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:37,409 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-19 04:23:37,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:37,410 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-19 04:23:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-19 04:23:37,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:37,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 04:23:37,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 04:23:37,412 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:37,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-19 04:23:37,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:37,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172406641] [2020-08-19 04:23:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 04:23:37,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172406641] [2020-08-19 04:23:37,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:37,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:37,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815939441] [2020-08-19 04:23:37,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:37,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:37,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:37,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:37,467 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-19 04:23:37,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:37,769 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-19 04:23:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:37,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-19 04:23:37,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:37,775 INFO L225 Difference]: With dead ends: 1406 [2020-08-19 04:23:37,775 INFO L226 Difference]: Without dead ends: 714 [2020-08-19 04:23:37,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:37,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-19 04:23:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-19 04:23:37,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-19 04:23:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-19 04:23:37,838 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-19 04:23:37,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:37,838 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-19 04:23:37,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:37,839 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-19 04:23:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-19 04:23:37,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:37,841 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:37,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 04:23:37,841 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:37,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:37,842 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-19 04:23:37,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:37,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607106230] [2020-08-19 04:23:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 04:23:37,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607106230] [2020-08-19 04:23:37,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:37,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:37,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50849139] [2020-08-19 04:23:37,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:37,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:37,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:37,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:37,974 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-19 04:23:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,324 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-19 04:23:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:38,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-19 04:23:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,330 INFO L225 Difference]: With dead ends: 1438 [2020-08-19 04:23:38,330 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 04:23:38,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 04:23:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-19 04:23:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-19 04:23:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-19 04:23:38,371 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-19 04:23:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,371 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-19 04:23:38,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:38,371 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-19 04:23:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-19 04:23:38,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,373 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:38,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 04:23:38,374 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,374 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-19 04:23:38,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262267729] [2020-08-19 04:23:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 04:23:38,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262267729] [2020-08-19 04:23:38,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:38,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868481999] [2020-08-19 04:23:38,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:38,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:38,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:38,455 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-19 04:23:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,711 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-19 04:23:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:38,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-19 04:23:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,717 INFO L225 Difference]: With dead ends: 1479 [2020-08-19 04:23:38,717 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 04:23:38,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:38,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 04:23:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-19 04:23:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-19 04:23:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-19 04:23:38,765 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-19 04:23:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,766 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-19 04:23:38,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-19 04:23:38,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-19 04:23:38,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,770 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:38,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 04:23:38,770 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-19 04:23:38,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490227636] [2020-08-19 04:23:38,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 04:23:38,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490227636] [2020-08-19 04:23:38,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:38,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032690810] [2020-08-19 04:23:38,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:38,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:38,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:38,854 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-19 04:23:39,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,159 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-19 04:23:39,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:39,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-19 04:23:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,166 INFO L225 Difference]: With dead ends: 1515 [2020-08-19 04:23:39,166 INFO L226 Difference]: Without dead ends: 785 [2020-08-19 04:23:39,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-19 04:23:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-19 04:23:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-19 04:23:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-19 04:23:39,235 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-19 04:23:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,236 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-19 04:23:39,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-19 04:23:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-19 04:23:39,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-19 04:23:39,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 04:23:39,241 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-19 04:23:39,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286068456] [2020-08-19 04:23:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 04:23:39,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286068456] [2020-08-19 04:23:39,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:39,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852416685] [2020-08-19 04:23:39,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:39,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:39,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:39,376 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-19 04:23:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,698 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-19 04:23:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:39,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-19 04:23:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,704 INFO L225 Difference]: With dead ends: 1547 [2020-08-19 04:23:39,705 INFO L226 Difference]: Without dead ends: 785 [2020-08-19 04:23:39,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:39,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-19 04:23:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-19 04:23:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-19 04:23:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-19 04:23:39,775 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-19 04:23:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,776 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-19 04:23:39,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-19 04:23:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-19 04:23:39,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,781 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-08-19 04:23:39,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 04:23:39,781 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,785 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-19 04:23:39,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409901654] [2020-08-19 04:23:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-19 04:23:39,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409901654] [2020-08-19 04:23:39,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:39,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49985245] [2020-08-19 04:23:39,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:39,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:39,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:39,900 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-19 04:23:40,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,200 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-19 04:23:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:40,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-19 04:23:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,207 INFO L225 Difference]: With dead ends: 1573 [2020-08-19 04:23:40,208 INFO L226 Difference]: Without dead ends: 811 [2020-08-19 04:23:40,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:40,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-19 04:23:40,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-19 04:23:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-19 04:23:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-19 04:23:40,281 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-19 04:23:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,282 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-19 04:23:40,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-19 04:23:40,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 04:23:40,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,287 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-08-19 04:23:40,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-19 04:23:40,288 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,288 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-19 04:23:40,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299963135] [2020-08-19 04:23:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-19 04:23:40,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299963135] [2020-08-19 04:23:40,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:40,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110208940] [2020-08-19 04:23:40,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:40,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:40,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:40,393 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-19 04:23:40,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,677 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-19 04:23:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:40,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-19 04:23:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,681 INFO L225 Difference]: With dead ends: 1601 [2020-08-19 04:23:40,681 INFO L226 Difference]: Without dead ends: 811 [2020-08-19 04:23:40,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-19 04:23:40,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-19 04:23:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-19 04:23:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-19 04:23:40,730 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-19 04:23:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,730 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-19 04:23:40,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:40,731 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-19 04:23:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 04:23:40,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,733 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-19 04:23:40,734 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-19 04:23:40,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651487303] [2020-08-19 04:23:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 04:23:40,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651487303] [2020-08-19 04:23:40,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:40,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172510878] [2020-08-19 04:23:40,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:40,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:40,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:40,810 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-19 04:23:41,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:41,098 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-19 04:23:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:41,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-19 04:23:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:41,103 INFO L225 Difference]: With dead ends: 1656 [2020-08-19 04:23:41,104 INFO L226 Difference]: Without dead ends: 866 [2020-08-19 04:23:41,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-19 04:23:41,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-19 04:23:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-19 04:23:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-19 04:23:41,175 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-19 04:23:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:41,175 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-19 04:23:41,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-19 04:23:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 04:23:41,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:41,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:41,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-19 04:23:41,179 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:41,179 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-19 04:23:41,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:41,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090616881] [2020-08-19 04:23:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 04:23:41,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090616881] [2020-08-19 04:23:41,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:41,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:41,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395601002] [2020-08-19 04:23:41,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:41,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:41,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:41,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:41,258 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-19 04:23:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:41,531 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-19 04:23:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:41,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-19 04:23:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:41,537 INFO L225 Difference]: With dead ends: 1705 [2020-08-19 04:23:41,537 INFO L226 Difference]: Without dead ends: 850 [2020-08-19 04:23:41,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-19 04:23:41,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-19 04:23:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-19 04:23:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-19 04:23:41,590 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-19 04:23:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:41,591 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-19 04:23:41,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-19 04:23:41,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 04:23:41,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:41,594 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-19 04:23:41,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-19 04:23:41,594 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:41,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:41,594 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-19 04:23:41,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:41,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394558615] [2020-08-19 04:23:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-19 04:23:41,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394558615] [2020-08-19 04:23:41,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:41,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:41,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649845020] [2020-08-19 04:23:41,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:41,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:41,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:41,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:41,688 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-19 04:23:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:41,950 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-19 04:23:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:41,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-19 04:23:41,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:41,955 INFO L225 Difference]: With dead ends: 1671 [2020-08-19 04:23:41,955 INFO L226 Difference]: Without dead ends: 848 [2020-08-19 04:23:41,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-19 04:23:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-19 04:23:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-19 04:23:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-19 04:23:42,004 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-19 04:23:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:42,004 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-19 04:23:42,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-19 04:23:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 04:23:42,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:42,007 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:42,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-19 04:23:42,007 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:42,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:42,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-19 04:23:42,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:42,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908605783] [2020-08-19 04:23:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-19 04:23:42,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908605783] [2020-08-19 04:23:42,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:42,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:42,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472892487] [2020-08-19 04:23:42,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:42,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:42,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:42,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:42,073 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-19 04:23:42,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:42,356 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-19 04:23:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:42,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-19 04:23:42,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:42,361 INFO L225 Difference]: With dead ends: 1671 [2020-08-19 04:23:42,361 INFO L226 Difference]: Without dead ends: 831 [2020-08-19 04:23:42,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-19 04:23:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-19 04:23:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-19 04:23:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-19 04:23:42,415 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-19 04:23:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:42,416 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-19 04:23:42,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-19 04:23:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-19 04:23:42,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:42,418 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:23:42,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-19 04:23:42,419 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:42,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-19 04:23:42,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:42,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400539895] [2020-08-19 04:23:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:42,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-19 04:23:42,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400539895] [2020-08-19 04:23:42,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:42,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:42,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620649758] [2020-08-19 04:23:42,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:42,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:42,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:42,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:42,482 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-19 04:23:42,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:42,578 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-19 04:23:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:42,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-19 04:23:42,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:42,587 INFO L225 Difference]: With dead ends: 2417 [2020-08-19 04:23:42,588 INFO L226 Difference]: Without dead ends: 1611 [2020-08-19 04:23:42,590 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 [2020-08-19 04:23:42,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-19 04:23:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-19 04:23:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-19 04:23:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-19 04:23:42,693 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-19 04:23:42,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:42,694 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-19 04:23:42,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:42,695 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-19 04:23:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-19 04:23:42,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:42,699 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:23:42,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-19 04:23:42,700 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:42,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-19 04:23:42,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:42,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092625867] [2020-08-19 04:23:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:42,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-19 04:23:42,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092625867] [2020-08-19 04:23:42,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:42,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:42,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709647908] [2020-08-19 04:23:42,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:42,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:42,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:42,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:42,862 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-19 04:23:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:43,016 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-19 04:23:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:43,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-19 04:23:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:43,025 INFO L225 Difference]: With dead ends: 2416 [2020-08-19 04:23:43,026 INFO L226 Difference]: Without dead ends: 1608 [2020-08-19 04:23:43,029 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 [2020-08-19 04:23:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-19 04:23:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-19 04:23:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-19 04:23:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-19 04:23:43,176 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-19 04:23:43,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:43,177 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-19 04:23:43,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-19 04:23:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-19 04:23:43,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:43,182 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:23:43,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-19 04:23:43,183 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:43,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:43,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-19 04:23:43,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:43,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038170179] [2020-08-19 04:23:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-19 04:23:43,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038170179] [2020-08-19 04:23:43,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:43,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:43,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894358034] [2020-08-19 04:23:43,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:43,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:43,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:43,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:43,368 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-19 04:23:43,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:43,655 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-19 04:23:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:43,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-19 04:23:43,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:43,671 INFO L225 Difference]: With dead ends: 4752 [2020-08-19 04:23:43,671 INFO L226 Difference]: Without dead ends: 3159 [2020-08-19 04:23:43,675 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 [2020-08-19 04:23:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-19 04:23:43,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-19 04:23:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-19 04:23:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-19 04:23:43,811 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-19 04:23:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:43,812 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-19 04:23:43,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-19 04:23:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-19 04:23:43,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:43,815 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:23:43,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-19 04:23:43,815 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:43,816 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-19 04:23:43,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:43,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685017496] [2020-08-19 04:23:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-19 04:23:43,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685017496] [2020-08-19 04:23:43,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:43,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:43,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477995804] [2020-08-19 04:23:43,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:43,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:43,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:43,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:43,936 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-19 04:23:44,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:44,272 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-19 04:23:44,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:44,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-19 04:23:44,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:44,298 INFO L225 Difference]: With dead ends: 4792 [2020-08-19 04:23:44,299 INFO L226 Difference]: Without dead ends: 3199 [2020-08-19 04:23:44,303 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 [2020-08-19 04:23:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-19 04:23:44,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-19 04:23:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-19 04:23:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-19 04:23:44,553 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-19 04:23:44,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:44,554 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-19 04:23:44,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:44,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-19 04:23:44,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-19 04:23:44,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:44,558 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:23:44,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-19 04:23:44,558 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:44,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:44,559 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-19 04:23:44,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:44,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227011749] [2020-08-19 04:23:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:23:44,601 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:23:44,601 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:23:44,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-19 04:23:44,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:23:44 BoogieIcfgContainer [2020-08-19 04:23:44,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:23:44,643 INFO L168 Benchmark]: Toolchain (without parser) took 16599.97 ms. Allocated memory was 138.9 MB in the beginning and 529.0 MB in the end (delta: 390.1 MB). Free memory was 100.3 MB in the beginning and 196.1 MB in the end (delta: -95.7 MB). Peak memory consumption was 294.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:44,643 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:23:44,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.04 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 100.1 MB in the beginning and 175.7 MB in the end (delta: -75.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:44,644 INFO L168 Benchmark]: Boogie Preprocessor took 67.99 ms. Allocated memory is still 200.8 MB. Free memory was 175.7 MB in the beginning and 172.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:44,645 INFO L168 Benchmark]: RCFGBuilder took 899.53 ms. Allocated memory is still 200.8 MB. Free memory was 172.3 MB in the beginning and 113.8 MB in the end (delta: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:44,645 INFO L168 Benchmark]: TraceAbstraction took 15084.19 ms. Allocated memory was 200.8 MB in the beginning and 529.0 MB in the end (delta: 328.2 MB). Free memory was 113.8 MB in the beginning and 196.1 MB in the end (delta: -82.2 MB). Peak memory consumption was 246.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:44,647 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 543.04 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 100.1 MB in the beginning and 175.7 MB in the end (delta: -75.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.99 ms. Allocated memory is still 200.8 MB. Free memory was 175.7 MB in the beginning and 172.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 899.53 ms. Allocated memory is still 200.8 MB. Free memory was 172.3 MB in the beginning and 113.8 MB in the end (delta: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15084.19 ms. Allocated memory was 200.8 MB in the beginning and 529.0 MB in the end (delta: 328.2 MB). Free memory was 113.8 MB in the beginning and 196.1 MB in the end (delta: -82.2 MB). Peak memory consumption was 246.0 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, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.9s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7259 SDtfs, 16112 SDslu, 7753 SDs, 0 SdLazy, 4949 SolverSat, 1408 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3197occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 3391 NumberOfCodeBlocks, 3391 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3195 ConstructedInterpolants, 0 QuantifiedInterpolants, 632376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 2752/2752 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...