/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=0.1 -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 03:34:55,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:34:55,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:34:55,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:34:55,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:34:55,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:34:55,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:34:55,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:34:55,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:34:55,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:34:55,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:34:55,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:34:55,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:34:55,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:34:55,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:34:55,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:34:55,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:34:55,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:34:55,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:34:55,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:34:55,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:34:55,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:34:55,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:34:55,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:34:55,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:34:55,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:34:55,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:34:55,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:34:55,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:34:55,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:34:55,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:34:55,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:34:55,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:34:55,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:34:55,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:34:55,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:34:55,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:34:55,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:34:55,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:34:55,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:34:55,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:34:55,759 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 03:34:55,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:34:55,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:34:55,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:34:55,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:34:55,781 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:34:55,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:34:55,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:34:55,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:34:55,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:34:55,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:34:55,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:34:55,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:34:55,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:34:55,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:34:55,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:34:55,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:34:55,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:34:55,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:34:55,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:34:55,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:34:55,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:34:55,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:34:55,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:34:55,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:34:55,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:34:55,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:34:55,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:34:55,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:34:55,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:34:55,786 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=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:34:56,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:34:56,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:34:56,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:34:56,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:34:56,126 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:34:56,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-19 03:34:56,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/729b57a1c/d90f477681a9443d9997e79c4ce97865/FLAG7a91da078 [2020-08-19 03:34:56,677 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:34:56,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-19 03:34:56,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/729b57a1c/d90f477681a9443d9997e79c4ce97865/FLAG7a91da078 [2020-08-19 03:34:56,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/729b57a1c/d90f477681a9443d9997e79c4ce97865 [2020-08-19 03:34:56,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:34:56,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:34:56,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:34:56,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:34:56,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:34:56,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:34:56" (1/1) ... [2020-08-19 03:34:56,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de13521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:56, skipping insertion in model container [2020-08-19 03:34:56,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:34:56" (1/1) ... [2020-08-19 03:34:56,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:34:57,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:34:57,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:34:57,413 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:34:57,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:34:57,638 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:34:57,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:57 WrapperNode [2020-08-19 03:34:57,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:34:57,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:34:57,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:34:57,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:34:57,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:57" (1/1) ... [2020-08-19 03:34:57,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:57" (1/1) ... [2020-08-19 03:34:57,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:57" (1/1) ... [2020-08-19 03:34:57,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:57" (1/1) ... [2020-08-19 03:34:57,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:57" (1/1) ... [2020-08-19 03:34:57,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:57" (1/1) ... [2020-08-19 03:34:57,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:57" (1/1) ... [2020-08-19 03:34:57,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:34:57,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:34:57,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:34:57,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:34:57,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:57" (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 03:34:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:34:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:34:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-19 03:34:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:34:57,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:34:57,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 03:34:57,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:34:57,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 03:34:57,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 03:34:57,781 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-19 03:34:57,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:34:57,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:34:57,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:34:58,038 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 03:34:58,508 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-19 03:34:58,509 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-19 03:34:58,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:34:58,520 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 03:34:58,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:34:58 BoogieIcfgContainer [2020-08-19 03:34:58,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:34:58,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:34:58,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:34:58,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:34:58,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:34:56" (1/3) ... [2020-08-19 03:34:58,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4b28ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:34:58, skipping insertion in model container [2020-08-19 03:34:58,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:57" (2/3) ... [2020-08-19 03:34:58,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4b28ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:34:58, skipping insertion in model container [2020-08-19 03:34:58,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:34:58" (3/3) ... [2020-08-19 03:34:58,535 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-19 03:34:58,545 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:34:58,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:34:58,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:34:58,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:34:58,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:34:58,593 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:34:58,593 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:34:58,594 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:34:58,594 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:34:58,594 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:34:58,594 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:34:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 03:34:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 03:34:58,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:34:58,627 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 03:34:58,627 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:34:58,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:34:58,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-19 03:34:58,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:34:58,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396604636] [2020-08-19 03:34:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:34:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:34:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:58,957 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 03:34:58,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396604636] [2020-08-19 03:34:58,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:34:58,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:34:58,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571927312] [2020-08-19 03:34:58,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:34:58,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:34:58,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:34:58,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:34:58,983 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-19 03:34:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:34:59,313 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-19 03:34:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:34:59,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-19 03:34:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:34:59,330 INFO L225 Difference]: With dead ends: 362 [2020-08-19 03:34:59,330 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 03:34:59,335 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 03:34:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 03:34:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-19 03:34:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-19 03:34:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-19 03:34:59,395 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-19 03:34:59,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:34:59,395 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-19 03:34:59,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:34:59,395 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-19 03:34:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 03:34:59,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:34:59,398 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 03:34:59,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:34:59,398 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:34:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:34:59,399 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-19 03:34:59,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:34:59,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984745741] [2020-08-19 03:34:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:34:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:34:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:59,496 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 03:34:59,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984745741] [2020-08-19 03:34:59,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:34:59,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:34:59,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284103876] [2020-08-19 03:34:59,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:34:59,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:34:59,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:34:59,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:34:59,500 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-19 03:34:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:34:59,709 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-19 03:34:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:34:59,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 03:34:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:34:59,712 INFO L225 Difference]: With dead ends: 363 [2020-08-19 03:34:59,712 INFO L226 Difference]: Without dead ends: 199 [2020-08-19 03:34:59,714 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 03:34:59,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-19 03:34:59,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-19 03:34:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-19 03:34:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-19 03:34:59,731 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-19 03:34:59,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:34:59,732 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-19 03:34:59,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:34:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-19 03:34:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 03:34:59,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:34:59,734 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 03:34:59,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:34:59,734 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:34:59,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:34:59,734 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-19 03:34:59,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:34:59,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667043278] [2020-08-19 03:34:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:34:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:34:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:59,844 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 03:34:59,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667043278] [2020-08-19 03:34:59,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:34:59,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:34:59,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410475618] [2020-08-19 03:34:59,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:34:59,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:34:59,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:34:59,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:34:59,846 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-19 03:35:00,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:00,109 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-19 03:35:00,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:00,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 03:35:00,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:00,112 INFO L225 Difference]: With dead ends: 393 [2020-08-19 03:35:00,113 INFO L226 Difference]: Without dead ends: 207 [2020-08-19 03:35:00,114 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 03:35:00,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-19 03:35:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-19 03:35:00,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-19 03:35:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-19 03:35:00,130 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-19 03:35:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:00,131 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-19 03:35:00,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:00,131 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-19 03:35:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 03:35:00,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:00,133 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 03:35:00,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:35:00,133 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:00,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:00,134 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-19 03:35:00,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:00,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101065460] [2020-08-19 03:35:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:00,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:00,225 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 03:35:00,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101065460] [2020-08-19 03:35:00,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:00,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:00,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544229534] [2020-08-19 03:35:00,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:00,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:00,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:00,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:00,228 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-19 03:35:00,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:00,432 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-19 03:35:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:00,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 03:35:00,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:00,435 INFO L225 Difference]: With dead ends: 398 [2020-08-19 03:35:00,435 INFO L226 Difference]: Without dead ends: 206 [2020-08-19 03:35:00,436 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 03:35:00,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-19 03:35:00,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-19 03:35:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 03:35:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-19 03:35:00,447 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-19 03:35:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:00,448 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-19 03:35:00,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:00,448 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-19 03:35:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-19 03:35:00,450 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:00,450 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 03:35:00,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:35:00,450 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:00,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:00,451 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-19 03:35:00,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:00,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722284188] [2020-08-19 03:35:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:00,509 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 03:35:00,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722284188] [2020-08-19 03:35:00,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:00,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:00,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201365951] [2020-08-19 03:35:00,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:00,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:00,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:00,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:00,512 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-19 03:35:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:00,691 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-19 03:35:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:00,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-19 03:35:00,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:00,694 INFO L225 Difference]: With dead ends: 409 [2020-08-19 03:35:00,694 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 03:35:00,695 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 03:35:00,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 03:35:00,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 03:35:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 03:35:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-19 03:35:00,705 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-19 03:35:00,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:00,705 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-19 03:35:00,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:00,706 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-19 03:35:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 03:35:00,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:00,707 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 03:35:00,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:35:00,708 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:00,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-19 03:35:00,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:00,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537182835] [2020-08-19 03:35:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:00,761 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 03:35:00,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537182835] [2020-08-19 03:35:00,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:00,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:00,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705830569] [2020-08-19 03:35:00,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:00,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:00,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:00,764 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-19 03:35:00,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:00,966 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-19 03:35:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:00,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-19 03:35:00,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:00,969 INFO L225 Difference]: With dead ends: 409 [2020-08-19 03:35:00,969 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 03:35:00,970 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 03:35:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 03:35:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 03:35:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 03:35:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-19 03:35:00,980 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-19 03:35:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:00,980 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-19 03:35:00,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-19 03:35:00,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 03:35:00,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:00,982 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 03:35:00,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:35:00,982 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:00,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:00,983 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-19 03:35:00,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:00,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310005682] [2020-08-19 03:35:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:01,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:01,029 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 03:35:01,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310005682] [2020-08-19 03:35:01,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:01,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:01,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928005543] [2020-08-19 03:35:01,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:01,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:01,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:01,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:01,032 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-19 03:35:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:01,221 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-19 03:35:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:01,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-19 03:35:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:01,223 INFO L225 Difference]: With dead ends: 409 [2020-08-19 03:35:01,224 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 03:35:01,225 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 03:35:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 03:35:01,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 03:35:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 03:35:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-19 03:35:01,238 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-19 03:35:01,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:01,238 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-19 03:35:01,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:01,238 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-19 03:35:01,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 03:35:01,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:01,240 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 03:35:01,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:35:01,241 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:01,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:01,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-19 03:35:01,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:01,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136746554] [2020-08-19 03:35:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:01,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:01,348 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 03:35:01,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136746554] [2020-08-19 03:35:01,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:01,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:35:01,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527219290] [2020-08-19 03:35:01,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:35:01,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:01,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:35:01,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:35:01,350 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-19 03:35:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:01,709 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-19 03:35:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:35:01,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-19 03:35:01,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:01,714 INFO L225 Difference]: With dead ends: 605 [2020-08-19 03:35:01,714 INFO L226 Difference]: Without dead ends: 412 [2020-08-19 03:35:01,715 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 03:35:01,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-19 03:35:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-19 03:35:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-19 03:35:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-19 03:35:01,764 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-19 03:35:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:01,764 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-19 03:35:01,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:35:01,764 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-19 03:35:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-19 03:35:01,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:01,766 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 03:35:01,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:35:01,767 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:01,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:01,767 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-19 03:35:01,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:01,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665073057] [2020-08-19 03:35:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:01,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:01,840 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 03:35:01,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665073057] [2020-08-19 03:35:01,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:01,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:01,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81869020] [2020-08-19 03:35:01,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:01,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:01,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:01,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:01,843 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-19 03:35:02,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:02,085 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-19 03:35:02,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:02,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-19 03:35:02,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:02,094 INFO L225 Difference]: With dead ends: 847 [2020-08-19 03:35:02,095 INFO L226 Difference]: Without dead ends: 472 [2020-08-19 03:35:02,098 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 03:35:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-19 03:35:02,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-19 03:35:02,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-19 03:35:02,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-19 03:35:02,121 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-19 03:35:02,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:02,122 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-19 03:35:02,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-19 03:35:02,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-19 03:35:02,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:02,126 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 03:35:02,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:35:02,126 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:02,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-19 03:35:02,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:02,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406727973] [2020-08-19 03:35:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:02,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:02,183 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 03:35:02,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406727973] [2020-08-19 03:35:02,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:02,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:02,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677563263] [2020-08-19 03:35:02,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:02,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:02,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:02,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:02,185 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-19 03:35:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:02,485 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-19 03:35:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:02,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-19 03:35:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:02,489 INFO L225 Difference]: With dead ends: 936 [2020-08-19 03:35:02,490 INFO L226 Difference]: Without dead ends: 495 [2020-08-19 03:35:02,491 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 03:35:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-19 03:35:02,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-19 03:35:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-19 03:35:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-19 03:35:02,517 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-19 03:35:02,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:02,517 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-19 03:35:02,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-19 03:35:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 03:35:02,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:02,519 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 03:35:02,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:35:02,520 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:02,520 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-19 03:35:02,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:02,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302211521] [2020-08-19 03:35:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:02,601 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 03:35:02,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302211521] [2020-08-19 03:35:02,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:02,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:02,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084120978] [2020-08-19 03:35:02,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:02,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:02,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:02,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:02,604 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-19 03:35:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:02,870 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-19 03:35:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:02,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-19 03:35:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:02,876 INFO L225 Difference]: With dead ends: 993 [2020-08-19 03:35:02,876 INFO L226 Difference]: Without dead ends: 529 [2020-08-19 03:35:02,877 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 03:35:02,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-19 03:35:02,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-19 03:35:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 03:35:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-19 03:35:02,900 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-19 03:35:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:02,901 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-19 03:35:02,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-19 03:35:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 03:35:02,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:02,902 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 03:35:02,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:35:02,903 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:02,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:02,903 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-19 03:35:02,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:02,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294656912] [2020-08-19 03:35:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:02,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:02,964 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 03:35:02,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294656912] [2020-08-19 03:35:02,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:02,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:02,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437138239] [2020-08-19 03:35:02,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:02,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:02,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:02,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:02,967 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-19 03:35:03,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:03,194 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-19 03:35:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:03,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-19 03:35:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:03,198 INFO L225 Difference]: With dead ends: 1027 [2020-08-19 03:35:03,198 INFO L226 Difference]: Without dead ends: 529 [2020-08-19 03:35:03,199 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 03:35:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-19 03:35:03,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-19 03:35:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 03:35:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-19 03:35:03,223 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-19 03:35:03,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:03,223 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-19 03:35:03,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:03,223 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-19 03:35:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 03:35:03,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:03,225 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 03:35:03,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:35:03,225 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:03,225 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-19 03:35:03,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:03,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913971492] [2020-08-19 03:35:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:03,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:03,270 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 03:35:03,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913971492] [2020-08-19 03:35:03,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:03,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:03,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789386174] [2020-08-19 03:35:03,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:03,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:03,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:03,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:03,272 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-19 03:35:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:03,496 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-19 03:35:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:03,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-19 03:35:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:03,500 INFO L225 Difference]: With dead ends: 1074 [2020-08-19 03:35:03,500 INFO L226 Difference]: Without dead ends: 576 [2020-08-19 03:35:03,501 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 03:35:03,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-19 03:35:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-19 03:35:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-19 03:35:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-19 03:35:03,543 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-19 03:35:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:03,544 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-19 03:35:03,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-19 03:35:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 03:35:03,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:03,549 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 03:35:03,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 03:35:03,549 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:03,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:03,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-19 03:35:03,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:03,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57999024] [2020-08-19 03:35:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:03,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:03,616 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 03:35:03,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57999024] [2020-08-19 03:35:03,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:03,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:03,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367455161] [2020-08-19 03:35:03,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:03,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:03,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:03,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:03,618 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-19 03:35:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:03,870 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-19 03:35:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:03,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-19 03:35:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:03,875 INFO L225 Difference]: With dead ends: 1184 [2020-08-19 03:35:03,875 INFO L226 Difference]: Without dead ends: 623 [2020-08-19 03:35:03,877 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 03:35:03,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-19 03:35:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-19 03:35:03,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 03:35:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-19 03:35:03,920 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-19 03:35:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:03,921 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-19 03:35:03,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-19 03:35:03,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-19 03:35:03,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:03,927 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 03:35:03,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 03:35:03,928 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:03,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:03,928 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-19 03:35:03,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:03,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602468041] [2020-08-19 03:35:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:04,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:04,013 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 03:35:04,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602468041] [2020-08-19 03:35:04,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:04,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:04,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138641325] [2020-08-19 03:35:04,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:04,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:04,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:04,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:04,017 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-19 03:35:04,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:04,268 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-19 03:35:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:04,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-19 03:35:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:04,272 INFO L225 Difference]: With dead ends: 1227 [2020-08-19 03:35:04,272 INFO L226 Difference]: Without dead ends: 623 [2020-08-19 03:35:04,275 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 03:35:04,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-19 03:35:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-19 03:35:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 03:35:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-19 03:35:04,302 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-19 03:35:04,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:04,303 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-19 03:35:04,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-19 03:35:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 03:35:04,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:04,305 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 03:35:04,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 03:35:04,305 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:04,306 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-19 03:35:04,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:04,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699864612] [2020-08-19 03:35:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:04,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:04,381 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 03:35:04,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699864612] [2020-08-19 03:35:04,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:04,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:04,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856435419] [2020-08-19 03:35:04,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:04,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:04,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:04,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:04,387 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-19 03:35:04,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:04,611 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-19 03:35:04,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:04,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-19 03:35:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:04,616 INFO L225 Difference]: With dead ends: 1223 [2020-08-19 03:35:04,617 INFO L226 Difference]: Without dead ends: 619 [2020-08-19 03:35:04,620 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 03:35:04,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-19 03:35:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-19 03:35:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 03:35:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-19 03:35:04,674 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-19 03:35:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:04,674 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-19 03:35:04,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-19 03:35:04,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 03:35:04,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:04,676 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 03:35:04,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 03:35:04,676 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:04,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:04,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-19 03:35:04,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:04,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385615179] [2020-08-19 03:35:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:04,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:04,734 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 03:35:04,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385615179] [2020-08-19 03:35:04,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:04,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:04,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847750961] [2020-08-19 03:35:04,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:04,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:04,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:04,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:04,737 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-19 03:35:04,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:04,992 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-19 03:35:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:04,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-19 03:35:04,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:04,998 INFO L225 Difference]: With dead ends: 1281 [2020-08-19 03:35:04,998 INFO L226 Difference]: Without dead ends: 677 [2020-08-19 03:35:05,001 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 03:35:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-19 03:35:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-19 03:35:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 03:35:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-19 03:35:05,057 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-19 03:35:05,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:05,057 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-19 03:35:05,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-19 03:35:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 03:35:05,060 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:05,061 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 03:35:05,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 03:35:05,061 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:05,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:05,062 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-19 03:35:05,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:05,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794466697] [2020-08-19 03:35:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:05,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:05,151 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 03:35:05,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794466697] [2020-08-19 03:35:05,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:05,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:05,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593231976] [2020-08-19 03:35:05,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:05,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:05,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:05,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:05,162 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-19 03:35:05,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:05,528 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-19 03:35:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:05,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-19 03:35:05,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:05,534 INFO L225 Difference]: With dead ends: 1313 [2020-08-19 03:35:05,534 INFO L226 Difference]: Without dead ends: 677 [2020-08-19 03:35:05,536 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 03:35:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-19 03:35:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-19 03:35:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 03:35:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-19 03:35:05,590 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-19 03:35:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:05,591 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-19 03:35:05,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-19 03:35:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-19 03:35:05,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:05,597 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 03:35:05,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 03:35:05,597 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:05,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:05,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-19 03:35:05,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:05,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074959932] [2020-08-19 03:35:05,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:05,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:05,690 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 03:35:05,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074959932] [2020-08-19 03:35:05,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:05,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:05,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262220700] [2020-08-19 03:35:05,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:05,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:05,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:05,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:05,695 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-19 03:35:06,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,041 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-19 03:35:06,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:06,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-19 03:35:06,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,047 INFO L225 Difference]: With dead ends: 1349 [2020-08-19 03:35:06,047 INFO L226 Difference]: Without dead ends: 713 [2020-08-19 03:35:06,049 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 03:35:06,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-19 03:35:06,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-19 03:35:06,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-19 03:35:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-19 03:35:06,112 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-19 03:35:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,112 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-19 03:35:06,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-19 03:35:06,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-19 03:35:06,116 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,116 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 03:35:06,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 03:35:06,117 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-19 03:35:06,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356396641] [2020-08-19 03:35:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,199 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 03:35:06,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356396641] [2020-08-19 03:35:06,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:06,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676566421] [2020-08-19 03:35:06,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:06,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:06,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:06,202 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-19 03:35:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,493 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-19 03:35:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:06,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-19 03:35:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,497 INFO L225 Difference]: With dead ends: 1406 [2020-08-19 03:35:06,497 INFO L226 Difference]: Without dead ends: 714 [2020-08-19 03:35:06,499 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 03:35:06,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-19 03:35:06,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-19 03:35:06,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-19 03:35:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-19 03:35:06,548 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-19 03:35:06,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,549 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-19 03:35:06,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:06,549 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-19 03:35:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-19 03:35:06,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,552 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 03:35:06,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 03:35:06,552 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,553 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-19 03:35:06,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768829025] [2020-08-19 03:35:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,650 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 03:35:06,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768829025] [2020-08-19 03:35:06,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:06,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663927286] [2020-08-19 03:35:06,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:06,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:06,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:06,652 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-19 03:35:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,882 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-19 03:35:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:06,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-19 03:35:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,887 INFO L225 Difference]: With dead ends: 1438 [2020-08-19 03:35:06,887 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 03:35:06,890 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 03:35:06,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 03:35:06,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-19 03:35:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-19 03:35:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-19 03:35:06,925 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-19 03:35:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,925 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-19 03:35:06,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:06,925 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-19 03:35:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-19 03:35:06,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,927 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 03:35:06,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 03:35:06,927 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,928 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-19 03:35:06,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179317435] [2020-08-19 03:35:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,006 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 03:35:07,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179317435] [2020-08-19 03:35:07,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:07,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:07,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849327049] [2020-08-19 03:35:07,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:07,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:07,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:07,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:07,009 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-19 03:35:07,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:07,264 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-19 03:35:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:07,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-19 03:35:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:07,270 INFO L225 Difference]: With dead ends: 1479 [2020-08-19 03:35:07,270 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 03:35:07,272 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 03:35:07,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 03:35:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-19 03:35:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-19 03:35:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-19 03:35:07,314 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-19 03:35:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:07,314 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-19 03:35:07,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-19 03:35:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-19 03:35:07,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:07,319 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 03:35:07,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 03:35:07,319 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:07,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-19 03:35:07,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:07,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805724452] [2020-08-19 03:35:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,368 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 03:35:07,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805724452] [2020-08-19 03:35:07,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:07,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:07,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546931876] [2020-08-19 03:35:07,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:07,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:07,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:07,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:07,376 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-19 03:35:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:07,643 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-19 03:35:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:07,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-19 03:35:07,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:07,648 INFO L225 Difference]: With dead ends: 1515 [2020-08-19 03:35:07,648 INFO L226 Difference]: Without dead ends: 785 [2020-08-19 03:35:07,649 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 03:35:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-19 03:35:07,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-19 03:35:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-19 03:35:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-19 03:35:07,698 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-19 03:35:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:07,698 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-19 03:35:07,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-19 03:35:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-19 03:35:07,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:07,701 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 03:35:07,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 03:35:07,702 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:07,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:07,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-19 03:35:07,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:07,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875729707] [2020-08-19 03:35:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,807 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 03:35:07,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875729707] [2020-08-19 03:35:07,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:07,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:07,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025444858] [2020-08-19 03:35:07,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:07,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:07,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:07,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:07,809 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-19 03:35:08,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:08,030 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-19 03:35:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:08,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-19 03:35:08,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:08,034 INFO L225 Difference]: With dead ends: 1547 [2020-08-19 03:35:08,034 INFO L226 Difference]: Without dead ends: 785 [2020-08-19 03:35:08,035 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 03:35:08,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-19 03:35:08,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-19 03:35:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-19 03:35:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-19 03:35:08,075 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-19 03:35:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:08,076 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-19 03:35:08,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-19 03:35:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-19 03:35:08,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:08,078 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 03:35:08,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 03:35:08,079 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:08,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:08,079 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-19 03:35:08,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:08,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906633330] [2020-08-19 03:35:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:08,169 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 03:35:08,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906633330] [2020-08-19 03:35:08,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:08,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:08,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076938712] [2020-08-19 03:35:08,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:08,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:08,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:08,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:08,171 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-19 03:35:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:08,410 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-19 03:35:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:08,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-19 03:35:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:08,414 INFO L225 Difference]: With dead ends: 1573 [2020-08-19 03:35:08,415 INFO L226 Difference]: Without dead ends: 811 [2020-08-19 03:35:08,416 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 03:35:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-19 03:35:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-19 03:35:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-19 03:35:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-19 03:35:08,458 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-19 03:35:08,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:08,458 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-19 03:35:08,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-19 03:35:08,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 03:35:08,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:08,461 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 03:35:08,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-19 03:35:08,461 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:08,462 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-19 03:35:08,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:08,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599738847] [2020-08-19 03:35:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:08,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:08,544 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 03:35:08,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599738847] [2020-08-19 03:35:08,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:08,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:08,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849228962] [2020-08-19 03:35:08,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:08,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:08,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:08,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:08,548 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-19 03:35:08,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:08,788 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-19 03:35:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:08,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-19 03:35:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:08,794 INFO L225 Difference]: With dead ends: 1601 [2020-08-19 03:35:08,794 INFO L226 Difference]: Without dead ends: 811 [2020-08-19 03:35:08,796 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 03:35:08,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-19 03:35:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-19 03:35:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-19 03:35:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-19 03:35:08,866 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-19 03:35:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:08,867 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-19 03:35:08,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-19 03:35:08,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 03:35:08,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:08,872 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 03:35:08,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-19 03:35:08,872 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:08,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:08,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-19 03:35:08,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:08,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723676230] [2020-08-19 03:35:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:08,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:08,971 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 03:35:08,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723676230] [2020-08-19 03:35:08,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:08,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:08,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043192297] [2020-08-19 03:35:08,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:08,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:08,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:08,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:08,974 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-19 03:35:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:09,333 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-19 03:35:09,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:09,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-19 03:35:09,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:09,339 INFO L225 Difference]: With dead ends: 1656 [2020-08-19 03:35:09,340 INFO L226 Difference]: Without dead ends: 866 [2020-08-19 03:35:09,342 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 03:35:09,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-19 03:35:09,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-19 03:35:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-19 03:35:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-19 03:35:09,408 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-19 03:35:09,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:09,408 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-19 03:35:09,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-19 03:35:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 03:35:09,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:09,413 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 03:35:09,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-19 03:35:09,414 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:09,414 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-19 03:35:09,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:09,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095648514] [2020-08-19 03:35:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:09,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:09,512 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 03:35:09,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095648514] [2020-08-19 03:35:09,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:09,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:09,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162349429] [2020-08-19 03:35:09,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:09,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:09,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:09,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:09,515 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-19 03:35:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:09,887 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-19 03:35:09,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:09,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-19 03:35:09,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:09,894 INFO L225 Difference]: With dead ends: 1705 [2020-08-19 03:35:09,894 INFO L226 Difference]: Without dead ends: 850 [2020-08-19 03:35:09,897 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 03:35:09,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-19 03:35:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-19 03:35:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-19 03:35:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-19 03:35:09,980 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-19 03:35:09,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:09,981 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-19 03:35:09,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-19 03:35:09,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 03:35:09,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:09,985 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 03:35:09,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-19 03:35:09,986 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:09,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:09,986 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-19 03:35:09,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:09,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922267816] [2020-08-19 03:35:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:10,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:10,097 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 03:35:10,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922267816] [2020-08-19 03:35:10,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:10,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:10,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434435669] [2020-08-19 03:35:10,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:10,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:10,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:10,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:10,102 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-19 03:35:10,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:10,425 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-19 03:35:10,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:10,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-19 03:35:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:10,430 INFO L225 Difference]: With dead ends: 1671 [2020-08-19 03:35:10,430 INFO L226 Difference]: Without dead ends: 848 [2020-08-19 03:35:10,433 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 03:35:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-19 03:35:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-19 03:35:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-19 03:35:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-19 03:35:10,479 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-19 03:35:10,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:10,479 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-19 03:35:10,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:10,479 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-19 03:35:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 03:35:10,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:10,482 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 03:35:10,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-19 03:35:10,482 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:10,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:10,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-19 03:35:10,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:10,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744393507] [2020-08-19 03:35:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:10,554 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 03:35:10,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744393507] [2020-08-19 03:35:10,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:10,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:10,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300384493] [2020-08-19 03:35:10,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:10,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:10,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:10,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:10,559 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-19 03:35:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:10,792 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-19 03:35:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:10,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-19 03:35:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:10,797 INFO L225 Difference]: With dead ends: 1671 [2020-08-19 03:35:10,797 INFO L226 Difference]: Without dead ends: 831 [2020-08-19 03:35:10,799 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 03:35:10,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-19 03:35:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-19 03:35:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-19 03:35:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-19 03:35:10,850 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-19 03:35:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:10,851 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-19 03:35:10,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-19 03:35:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-19 03:35:10,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:10,853 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 03:35:10,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-19 03:35:10,854 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:10,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-19 03:35:10,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:10,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382310795] [2020-08-19 03:35:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:10,949 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 03:35:10,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382310795] [2020-08-19 03:35:10,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:10,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:10,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509854171] [2020-08-19 03:35:10,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:10,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:10,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:10,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:10,951 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-19 03:35:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:11,030 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-19 03:35:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:11,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-19 03:35:11,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:11,038 INFO L225 Difference]: With dead ends: 2417 [2020-08-19 03:35:11,038 INFO L226 Difference]: Without dead ends: 1611 [2020-08-19 03:35:11,040 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 03:35:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-19 03:35:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-19 03:35:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-19 03:35:11,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-19 03:35:11,098 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-19 03:35:11,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:11,098 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-19 03:35:11,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:11,098 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-19 03:35:11,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-19 03:35:11,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:11,101 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 03:35:11,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-19 03:35:11,101 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:11,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:11,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-19 03:35:11,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:11,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910097331] [2020-08-19 03:35:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:11,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:11,199 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 03:35:11,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910097331] [2020-08-19 03:35:11,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:11,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:11,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62808143] [2020-08-19 03:35:11,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:11,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:11,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:11,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:11,202 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-19 03:35:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:11,320 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-19 03:35:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:11,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-19 03:35:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:11,328 INFO L225 Difference]: With dead ends: 2416 [2020-08-19 03:35:11,328 INFO L226 Difference]: Without dead ends: 1608 [2020-08-19 03:35:11,331 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 03:35:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-19 03:35:11,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-19 03:35:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-19 03:35:11,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-19 03:35:11,422 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-19 03:35:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:11,422 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-19 03:35:11,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-19 03:35:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-19 03:35:11,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:11,425 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 03:35:11,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-19 03:35:11,426 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:11,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-19 03:35:11,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:11,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581141059] [2020-08-19 03:35:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:11,567 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 03:35:11,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581141059] [2020-08-19 03:35:11,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:11,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:11,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601446329] [2020-08-19 03:35:11,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:11,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:11,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:11,570 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-19 03:35:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:11,827 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-19 03:35:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:11,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-19 03:35:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:11,842 INFO L225 Difference]: With dead ends: 4752 [2020-08-19 03:35:11,843 INFO L226 Difference]: Without dead ends: 3159 [2020-08-19 03:35:11,848 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 03:35:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-19 03:35:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-19 03:35:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-19 03:35:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-19 03:35:11,975 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-19 03:35:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:11,975 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-19 03:35:11,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:11,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-19 03:35:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-19 03:35:11,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:11,978 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 03:35:11,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-19 03:35:11,978 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:11,979 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-19 03:35:11,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:11,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855339907] [2020-08-19 03:35:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,083 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 03:35:12,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855339907] [2020-08-19 03:35:12,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:12,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:12,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651488080] [2020-08-19 03:35:12,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:12,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:12,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:12,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:12,087 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-19 03:35:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:12,377 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-19 03:35:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:12,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-19 03:35:12,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:12,415 INFO L225 Difference]: With dead ends: 4792 [2020-08-19 03:35:12,415 INFO L226 Difference]: Without dead ends: 3199 [2020-08-19 03:35:12,426 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 03:35:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-19 03:35:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-19 03:35:12,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-19 03:35:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-19 03:35:12,696 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-19 03:35:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:12,697 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-19 03:35:12,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-19 03:35:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-19 03:35:12,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:12,700 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 03:35:12,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-19 03:35:12,701 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:12,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:12,701 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-19 03:35:12,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:12,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518049879] [2020-08-19 03:35:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:35:12,749 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:35:12,749 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:35:12,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-19 03:35:12,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:35:12 BoogieIcfgContainer [2020-08-19 03:35:12,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:35:12,808 INFO L168 Benchmark]: Toolchain (without parser) took 15831.24 ms. Allocated memory was 138.9 MB in the beginning and 479.7 MB in the end (delta: 340.8 MB). Free memory was 101.7 MB in the beginning and 356.1 MB in the end (delta: -254.4 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:12,809 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:35:12,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.19 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 177.3 MB in the end (delta: -75.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:12,811 INFO L168 Benchmark]: Boogie Preprocessor took 63.15 ms. Allocated memory is still 202.9 MB. Free memory was 177.3 MB in the beginning and 174.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:12,811 INFO L168 Benchmark]: RCFGBuilder took 822.53 ms. Allocated memory is still 202.9 MB. Free memory was 174.5 MB in the beginning and 116.0 MB in the end (delta: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:12,811 INFO L168 Benchmark]: TraceAbstraction took 14278.56 ms. Allocated memory was 202.9 MB in the beginning and 479.7 MB in the end (delta: 276.8 MB). Free memory was 115.3 MB in the beginning and 356.1 MB in the end (delta: -240.7 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:12,813 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.19 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 177.3 MB in the end (delta: -75.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.15 ms. Allocated memory is still 202.9 MB. Free memory was 177.3 MB in the beginning and 174.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 822.53 ms. Allocated memory is still 202.9 MB. Free memory was 174.5 MB in the beginning and 116.0 MB in the end (delta: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14278.56 ms. Allocated memory was 202.9 MB in the beginning and 479.7 MB in the end (delta: 276.8 MB). Free memory was 115.3 MB in the beginning and 356.1 MB in the end (delta: -240.7 MB). Peak memory consumption was 36.1 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: 14.1s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 9.0s, 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, 5.1s 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, 0.6s SatisfiabilityAnalysisTime, 1.6s 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...