/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:08:57,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:08:57,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:08:57,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:08:57,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:08:57,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:08:57,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:08:57,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:08:57,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:08:57,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:08:57,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:08:57,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:08:57,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:08:57,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:08:57,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:08:57,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:08:57,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:08:57,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:08:57,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:08:57,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:08:57,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:08:57,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:08:57,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:08:57,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:08:57,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:08:57,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:08:57,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:08:57,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:08:57,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:08:57,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:08:57,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:08:57,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:08:57,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:08:57,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:08:57,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:08:57,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:08:57,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:08:57,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:08:57,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:08:57,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:08:57,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:08:57,663 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 [2020-08-21 18:08:57,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:08:57,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:08:57,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:08:57,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:08:57,716 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:08:57,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:08:57,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:08:57,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:08:57,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:08:57,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:08:57,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:08:57,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:08:57,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:08:57,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:08:57,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:08:57,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:08:57,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:08:57,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:08:57,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:08:57,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:08:57,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:08:57,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:08:57,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:08:57,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:08:57,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:08:57,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:08:57,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:08:57,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:08:57,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:08:57,726 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=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:08:58,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:08:58,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:08:58,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:08:58,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:08:58,088 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:08:58,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-21 18:08:58,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d1c9c8b/078675b99ff647e4a85cb4c621b2df47/FLAG47479ef79 [2020-08-21 18:08:58,690 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:08:58,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-21 18:08:58,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d1c9c8b/078675b99ff647e4a85cb4c621b2df47/FLAG47479ef79 [2020-08-21 18:08:58,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d1c9c8b/078675b99ff647e4a85cb4c621b2df47 [2020-08-21 18:08:58,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:08:59,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:08:59,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:08:59,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:08:59,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:08:59,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:08:58" (1/1) ... [2020-08-21 18:08:59,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1573d552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59, skipping insertion in model container [2020-08-21 18:08:59,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:08:58" (1/1) ... [2020-08-21 18:08:59,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:08:59,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:08:59,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:08:59,351 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:08:59,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:08:59,519 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:08:59,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59 WrapperNode [2020-08-21 18:08:59,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:08:59,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:08:59,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:08:59,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:08:59,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59" (1/1) ... [2020-08-21 18:08:59,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59" (1/1) ... [2020-08-21 18:08:59,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59" (1/1) ... [2020-08-21 18:08:59,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59" (1/1) ... [2020-08-21 18:08:59,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59" (1/1) ... [2020-08-21 18:08:59,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59" (1/1) ... [2020-08-21 18:08:59,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59" (1/1) ... [2020-08-21 18:08:59,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:08:59,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:08:59,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:08:59,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:08:59,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59" (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 [2020-08-21 18:08:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:08:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:08:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-21 18:08:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:08:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:08:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 18:08:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:08:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-21 18:08:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 18:08:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-21 18:08:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:08:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:08:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:08:59,857 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-21 18:09:00,510 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-21 18:09:00,510 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-21 18:09:00,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:09:00,522 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 18:09:00,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:09:00 BoogieIcfgContainer [2020-08-21 18:09:00,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:09:00,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:09:00,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:09:00,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:09:00,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:08:58" (1/3) ... [2020-08-21 18:09:00,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe4c87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:09:00, skipping insertion in model container [2020-08-21 18:09:00,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:08:59" (2/3) ... [2020-08-21 18:09:00,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe4c87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:09:00, skipping insertion in model container [2020-08-21 18:09:00,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:09:00" (3/3) ... [2020-08-21 18:09:00,536 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-21 18:09:00,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:09:00,556 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:09:00,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:09:00,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:09:00,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:09:00,593 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:09:00,593 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:09:00,593 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:09:00,593 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:09:00,594 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:09:00,594 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:09:00,618 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 18:09:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 18:09:00,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:00,628 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] [2020-08-21 18:09:00,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:00,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:00,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-21 18:09:00,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:00,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017291100] [2020-08-21 18:09:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:00,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017291100] [2020-08-21 18:09:00,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:00,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:00,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823397023] [2020-08-21 18:09:00,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:00,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:00,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:00,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:00,975 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-21 18:09:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:01,365 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-21 18:09:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:01,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-21 18:09:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:01,382 INFO L225 Difference]: With dead ends: 362 [2020-08-21 18:09:01,382 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 18:09:01,387 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 [2020-08-21 18:09:01,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 18:09:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-21 18:09:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-21 18:09:01,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-21 18:09:01,454 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-21 18:09:01,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:01,455 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-21 18:09:01,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:01,455 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-21 18:09:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 18:09:01,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:01,457 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] [2020-08-21 18:09:01,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:09:01,458 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:01,459 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-21 18:09:01,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:01,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753211568] [2020-08-21 18:09:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:01,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753211568] [2020-08-21 18:09:01,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:01,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:01,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121627976] [2020-08-21 18:09:01,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:01,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:01,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:01,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:01,602 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-21 18:09:01,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:01,865 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-21 18:09:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:01,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 18:09:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:01,868 INFO L225 Difference]: With dead ends: 363 [2020-08-21 18:09:01,868 INFO L226 Difference]: Without dead ends: 199 [2020-08-21 18:09:01,870 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 [2020-08-21 18:09:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-21 18:09:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-21 18:09:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-21 18:09:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-21 18:09:01,890 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-21 18:09:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:01,890 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-21 18:09:01,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-21 18:09:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 18:09:01,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:01,893 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] [2020-08-21 18:09:01,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:09:01,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:01,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:01,894 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-21 18:09:01,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:01,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424750874] [2020-08-21 18:09:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:01,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:02,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424750874] [2020-08-21 18:09:02,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:02,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:02,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498065941] [2020-08-21 18:09:02,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:02,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:02,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:02,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:02,005 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-21 18:09:02,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:02,263 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-21 18:09:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:02,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 18:09:02,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:02,266 INFO L225 Difference]: With dead ends: 393 [2020-08-21 18:09:02,279 INFO L226 Difference]: Without dead ends: 207 [2020-08-21 18:09:02,281 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 [2020-08-21 18:09:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-21 18:09:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-21 18:09:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-21 18:09:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-21 18:09:02,298 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-21 18:09:02,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:02,299 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-21 18:09:02,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-21 18:09:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 18:09:02,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:02,301 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] [2020-08-21 18:09:02,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:09:02,302 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:02,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:02,302 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-21 18:09:02,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:02,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107738516] [2020-08-21 18:09:02,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:02,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:02,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107738516] [2020-08-21 18:09:02,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:02,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:02,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266366800] [2020-08-21 18:09:02,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:02,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:02,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:02,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:02,373 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-21 18:09:02,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:02,603 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-21 18:09:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:02,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 18:09:02,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:02,605 INFO L225 Difference]: With dead ends: 398 [2020-08-21 18:09:02,606 INFO L226 Difference]: Without dead ends: 206 [2020-08-21 18:09:02,607 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 [2020-08-21 18:09:02,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-21 18:09:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-21 18:09:02,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 18:09:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-21 18:09:02,637 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-21 18:09:02,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:02,637 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-21 18:09:02,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:02,638 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-21 18:09:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-21 18:09:02,641 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:02,642 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] [2020-08-21 18:09:02,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:09:02,642 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:02,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:02,643 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-21 18:09:02,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:02,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363998756] [2020-08-21 18:09:02,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:02,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:02,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363998756] [2020-08-21 18:09:02,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:02,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:02,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737199298] [2020-08-21 18:09:02,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:02,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:02,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:02,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:02,765 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-21 18:09:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:02,943 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-21 18:09:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:02,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-21 18:09:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:02,946 INFO L225 Difference]: With dead ends: 409 [2020-08-21 18:09:02,946 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 18:09:02,947 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 [2020-08-21 18:09:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 18:09:02,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 18:09:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 18:09:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-21 18:09:02,959 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-21 18:09:02,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:02,960 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-21 18:09:02,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-21 18:09:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-21 18:09:02,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:02,962 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] [2020-08-21 18:09:02,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:09:02,963 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:02,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-21 18:09:02,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:02,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771287897] [2020-08-21 18:09:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:03,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771287897] [2020-08-21 18:09:03,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:03,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:03,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266413793] [2020-08-21 18:09:03,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:03,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:03,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:03,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:03,017 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-21 18:09:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:03,239 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-21 18:09:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:03,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-21 18:09:03,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:03,241 INFO L225 Difference]: With dead ends: 409 [2020-08-21 18:09:03,242 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 18:09:03,243 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 [2020-08-21 18:09:03,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 18:09:03,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 18:09:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 18:09:03,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-21 18:09:03,254 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-21 18:09:03,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:03,254 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-21 18:09:03,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-21 18:09:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-21 18:09:03,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:03,256 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] [2020-08-21 18:09:03,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:09:03,257 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:03,257 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-21 18:09:03,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:03,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658977759] [2020-08-21 18:09:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:03,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:03,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658977759] [2020-08-21 18:09:03,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:03,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:03,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900317420] [2020-08-21 18:09:03,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:03,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:03,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:03,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:03,307 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-21 18:09:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:03,495 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-21 18:09:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:03,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-21 18:09:03,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:03,498 INFO L225 Difference]: With dead ends: 409 [2020-08-21 18:09:03,498 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 18:09:03,499 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 [2020-08-21 18:09:03,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 18:09:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 18:09:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 18:09:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-21 18:09:03,511 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-21 18:09:03,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:03,511 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-21 18:09:03,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-21 18:09:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-21 18:09:03,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:03,513 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] [2020-08-21 18:09:03,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:09:03,513 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:03,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:03,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-21 18:09:03,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:03,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972261520] [2020-08-21 18:09:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:03,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:03,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972261520] [2020-08-21 18:09:03,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:03,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:09:03,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683276957] [2020-08-21 18:09:03,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:09:03,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:03,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:09:03,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:09:03,576 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-21 18:09:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:03,971 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-21 18:09:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 18:09:03,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-21 18:09:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:03,976 INFO L225 Difference]: With dead ends: 605 [2020-08-21 18:09:03,977 INFO L226 Difference]: Without dead ends: 412 [2020-08-21 18:09:03,978 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 [2020-08-21 18:09:03,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-21 18:09:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-21 18:09:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-21 18:09:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-21 18:09:04,002 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-21 18:09:04,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:04,003 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-21 18:09:04,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:09:04,003 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-21 18:09:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 18:09:04,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:04,005 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] [2020-08-21 18:09:04,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:09:04,006 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-21 18:09:04,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:04,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131743279] [2020-08-21 18:09:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:04,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:04,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131743279] [2020-08-21 18:09:04,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:04,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:04,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575882213] [2020-08-21 18:09:04,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:04,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:04,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:04,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:04,070 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-21 18:09:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:04,324 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-21 18:09:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:04,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-21 18:09:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:04,328 INFO L225 Difference]: With dead ends: 847 [2020-08-21 18:09:04,328 INFO L226 Difference]: Without dead ends: 472 [2020-08-21 18:09:04,330 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 [2020-08-21 18:09:04,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-21 18:09:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-21 18:09:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-21 18:09:04,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-21 18:09:04,354 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-21 18:09:04,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:04,354 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-21 18:09:04,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:04,355 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-21 18:09:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-21 18:09:04,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:04,356 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] [2020-08-21 18:09:04,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:09:04,357 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:04,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:04,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-21 18:09:04,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:04,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898739249] [2020-08-21 18:09:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:04,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:04,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898739249] [2020-08-21 18:09:04,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:04,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:04,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813939666] [2020-08-21 18:09:04,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:04,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:04,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:04,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:04,410 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-21 18:09:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:04,670 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-21 18:09:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:04,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-21 18:09:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:04,674 INFO L225 Difference]: With dead ends: 936 [2020-08-21 18:09:04,675 INFO L226 Difference]: Without dead ends: 495 [2020-08-21 18:09:04,676 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 [2020-08-21 18:09:04,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-21 18:09:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-21 18:09:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-21 18:09:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-21 18:09:04,704 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-21 18:09:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:04,705 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-21 18:09:04,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-21 18:09:04,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 18:09:04,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:04,708 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] [2020-08-21 18:09:04,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:09:04,708 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:04,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:04,709 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-21 18:09:04,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:04,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871465548] [2020-08-21 18:09:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 18:09:04,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871465548] [2020-08-21 18:09:04,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:04,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:04,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605778056] [2020-08-21 18:09:04,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:04,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:04,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:04,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:04,813 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-21 18:09:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:05,015 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-21 18:09:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:05,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-21 18:09:05,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:05,019 INFO L225 Difference]: With dead ends: 993 [2020-08-21 18:09:05,019 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 18:09:05,021 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 [2020-08-21 18:09:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 18:09:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-21 18:09:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 18:09:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-21 18:09:05,047 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-21 18:09:05,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:05,048 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-21 18:09:05,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:05,048 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-21 18:09:05,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 18:09:05,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:05,050 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] [2020-08-21 18:09:05,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:09:05,050 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:05,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:05,051 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-21 18:09:05,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:05,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842938511] [2020-08-21 18:09:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:05,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 18:09:05,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842938511] [2020-08-21 18:09:05,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:05,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:05,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646571718] [2020-08-21 18:09:05,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:05,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:05,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:05,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:05,105 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-21 18:09:05,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:05,374 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-21 18:09:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:05,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-21 18:09:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:05,379 INFO L225 Difference]: With dead ends: 1027 [2020-08-21 18:09:05,380 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 18:09:05,381 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 [2020-08-21 18:09:05,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 18:09:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-21 18:09:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 18:09:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-21 18:09:05,414 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-21 18:09:05,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:05,415 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-21 18:09:05,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-21 18:09:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 18:09:05,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:05,417 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] [2020-08-21 18:09:05,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 18:09:05,418 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:05,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-21 18:09:05,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:05,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160541898] [2020-08-21 18:09:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:05,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 18:09:05,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160541898] [2020-08-21 18:09:05,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:05,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:05,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587473883] [2020-08-21 18:09:05,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:05,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:05,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:05,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:05,491 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-21 18:09:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:05,762 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-21 18:09:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:05,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-21 18:09:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:05,766 INFO L225 Difference]: With dead ends: 1074 [2020-08-21 18:09:05,767 INFO L226 Difference]: Without dead ends: 576 [2020-08-21 18:09:05,768 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 [2020-08-21 18:09:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-21 18:09:05,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-21 18:09:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-21 18:09:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-21 18:09:05,797 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-21 18:09:05,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:05,798 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-21 18:09:05,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-21 18:09:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 18:09:05,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:05,803 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] [2020-08-21 18:09:05,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 18:09:05,803 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:05,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:05,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-21 18:09:05,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:05,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054524914] [2020-08-21 18:09:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:05,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:05,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054524914] [2020-08-21 18:09:05,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:05,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:05,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440178991] [2020-08-21 18:09:05,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:05,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:05,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:05,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:05,873 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-21 18:09:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:06,168 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-21 18:09:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:06,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-21 18:09:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:06,174 INFO L225 Difference]: With dead ends: 1184 [2020-08-21 18:09:06,174 INFO L226 Difference]: Without dead ends: 623 [2020-08-21 18:09:06,177 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 [2020-08-21 18:09:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-21 18:09:06,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-21 18:09:06,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 18:09:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-21 18:09:06,220 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-21 18:09:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:06,221 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-21 18:09:06,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-21 18:09:06,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-21 18:09:06,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:06,226 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] [2020-08-21 18:09:06,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 18:09:06,227 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:06,227 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-21 18:09:06,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:06,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963048011] [2020-08-21 18:09:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:06,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:06,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963048011] [2020-08-21 18:09:06,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:06,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:06,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918107879] [2020-08-21 18:09:06,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:06,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:06,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:06,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:06,309 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-21 18:09:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:06,634 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-21 18:09:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:06,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-21 18:09:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:06,639 INFO L225 Difference]: With dead ends: 1227 [2020-08-21 18:09:06,639 INFO L226 Difference]: Without dead ends: 623 [2020-08-21 18:09:06,642 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 [2020-08-21 18:09:06,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-21 18:09:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-21 18:09:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 18:09:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-21 18:09:06,672 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-21 18:09:06,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:06,672 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-21 18:09:06,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-21 18:09:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 18:09:06,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:06,675 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] [2020-08-21 18:09:06,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 18:09:06,675 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:06,676 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-21 18:09:06,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:06,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485928786] [2020-08-21 18:09:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:06,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 18:09:06,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485928786] [2020-08-21 18:09:06,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:06,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:06,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223184295] [2020-08-21 18:09:06,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:06,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:06,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:06,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:06,754 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-21 18:09:06,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:06,978 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-21 18:09:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:06,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-21 18:09:06,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:06,982 INFO L225 Difference]: With dead ends: 1223 [2020-08-21 18:09:06,982 INFO L226 Difference]: Without dead ends: 619 [2020-08-21 18:09:06,984 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 [2020-08-21 18:09:06,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-21 18:09:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-21 18:09:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 18:09:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-21 18:09:07,020 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-21 18:09:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:07,021 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-21 18:09:07,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-21 18:09:07,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 18:09:07,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:07,024 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] [2020-08-21 18:09:07,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 18:09:07,025 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:07,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-21 18:09:07,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:07,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917190791] [2020-08-21 18:09:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:07,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 18:09:07,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917190791] [2020-08-21 18:09:07,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:07,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:07,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624092594] [2020-08-21 18:09:07,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:07,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:07,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:07,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:07,101 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-21 18:09:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:07,370 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-21 18:09:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:07,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-21 18:09:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:07,374 INFO L225 Difference]: With dead ends: 1281 [2020-08-21 18:09:07,374 INFO L226 Difference]: Without dead ends: 677 [2020-08-21 18:09:07,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:09:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-21 18:09:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-21 18:09:07,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 18:09:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-21 18:09:07,414 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-21 18:09:07,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:07,415 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-21 18:09:07,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:07,415 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-21 18:09:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 18:09:07,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:07,417 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] [2020-08-21 18:09:07,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 18:09:07,417 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:07,418 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-21 18:09:07,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:07,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529301967] [2020-08-21 18:09:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:07,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 18:09:07,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529301967] [2020-08-21 18:09:07,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:07,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:07,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389548489] [2020-08-21 18:09:07,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:07,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:07,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:07,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:07,518 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-21 18:09:07,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:07,743 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-21 18:09:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:07,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-21 18:09:07,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:07,747 INFO L225 Difference]: With dead ends: 1313 [2020-08-21 18:09:07,748 INFO L226 Difference]: Without dead ends: 677 [2020-08-21 18:09:07,749 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 [2020-08-21 18:09:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-21 18:09:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-21 18:09:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 18:09:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-21 18:09:07,798 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-21 18:09:07,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:07,798 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-21 18:09:07,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-21 18:09:07,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-21 18:09:07,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:07,803 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] [2020-08-21 18:09:07,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 18:09:07,803 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:07,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:07,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-21 18:09:07,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:07,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189054070] [2020-08-21 18:09:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:07,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 18:09:07,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189054070] [2020-08-21 18:09:07,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:07,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:07,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144053336] [2020-08-21 18:09:07,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:07,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:07,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:07,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:07,868 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-21 18:09:08,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:08,112 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-21 18:09:08,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:08,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-21 18:09:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:08,117 INFO L225 Difference]: With dead ends: 1349 [2020-08-21 18:09:08,117 INFO L226 Difference]: Without dead ends: 713 [2020-08-21 18:09:08,119 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 [2020-08-21 18:09:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-21 18:09:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-21 18:09:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-21 18:09:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-21 18:09:08,156 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-21 18:09:08,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:08,156 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-21 18:09:08,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:08,156 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-21 18:09:08,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-21 18:09:08,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:08,158 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] [2020-08-21 18:09:08,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-21 18:09:08,159 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:08,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:08,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-21 18:09:08,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:08,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925772410] [2020-08-21 18:09:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:08,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 18:09:08,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925772410] [2020-08-21 18:09:08,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:08,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:08,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445342757] [2020-08-21 18:09:08,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:08,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:08,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:08,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:08,222 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-21 18:09:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:08,600 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-21 18:09:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:08,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-21 18:09:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:08,607 INFO L225 Difference]: With dead ends: 1406 [2020-08-21 18:09:08,607 INFO L226 Difference]: Without dead ends: 714 [2020-08-21 18:09:08,609 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 [2020-08-21 18:09:08,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-21 18:09:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-21 18:09:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-21 18:09:08,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-21 18:09:08,667 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-21 18:09:08,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:08,667 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-21 18:09:08,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:08,667 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-21 18:09:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 18:09:08,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:08,669 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] [2020-08-21 18:09:08,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-21 18:09:08,670 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:08,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:08,670 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-21 18:09:08,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:08,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113673964] [2020-08-21 18:09:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:08,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 18:09:08,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113673964] [2020-08-21 18:09:08,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:08,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:08,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516627513] [2020-08-21 18:09:08,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:08,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:08,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:08,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:08,776 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-21 18:09:09,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:09,110 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-21 18:09:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:09,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-21 18:09:09,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:09,116 INFO L225 Difference]: With dead ends: 1438 [2020-08-21 18:09:09,117 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 18:09:09,119 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 [2020-08-21 18:09:09,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 18:09:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-21 18:09:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-21 18:09:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-21 18:09:09,174 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-21 18:09:09,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:09,175 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-21 18:09:09,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-21 18:09:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-21 18:09:09,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:09,179 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] [2020-08-21 18:09:09,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-21 18:09:09,180 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:09,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:09,180 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-21 18:09:09,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:09,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756251599] [2020-08-21 18:09:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 18:09:09,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756251599] [2020-08-21 18:09:09,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:09,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:09,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12198612] [2020-08-21 18:09:09,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:09,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:09,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:09,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:09,292 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-21 18:09:09,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:09,642 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-21 18:09:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:09,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-21 18:09:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:09,649 INFO L225 Difference]: With dead ends: 1479 [2020-08-21 18:09:09,649 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 18:09:09,652 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 [2020-08-21 18:09:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 18:09:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-21 18:09:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-21 18:09:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-21 18:09:09,732 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-21 18:09:09,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:09,732 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-21 18:09:09,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-21 18:09:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-21 18:09:09,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:09,738 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] [2020-08-21 18:09:09,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-21 18:09:09,738 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:09,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:09,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-21 18:09:09,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:09,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523031456] [2020-08-21 18:09:09,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:09,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 18:09:09,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523031456] [2020-08-21 18:09:09,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:09,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:09,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84043249] [2020-08-21 18:09:09,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:09,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:09,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:09,811 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-21 18:09:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:10,053 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-21 18:09:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:10,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-21 18:09:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:10,057 INFO L225 Difference]: With dead ends: 1515 [2020-08-21 18:09:10,058 INFO L226 Difference]: Without dead ends: 785 [2020-08-21 18:09:10,060 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 [2020-08-21 18:09:10,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-21 18:09:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-21 18:09:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-21 18:09:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-21 18:09:10,098 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-21 18:09:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:10,099 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-21 18:09:10,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-21 18:09:10,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-21 18:09:10,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:10,101 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] [2020-08-21 18:09:10,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-21 18:09:10,102 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:10,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:10,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-21 18:09:10,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:10,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097937051] [2020-08-21 18:09:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:10,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 18:09:10,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097937051] [2020-08-21 18:09:10,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:10,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:10,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771588715] [2020-08-21 18:09:10,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:10,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:10,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:10,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:10,160 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-21 18:09:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:10,446 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-21 18:09:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:10,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-21 18:09:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:10,452 INFO L225 Difference]: With dead ends: 1547 [2020-08-21 18:09:10,452 INFO L226 Difference]: Without dead ends: 785 [2020-08-21 18:09:10,455 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 [2020-08-21 18:09:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-21 18:09:10,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-21 18:09:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-21 18:09:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-21 18:09:10,512 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-21 18:09:10,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:10,513 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-21 18:09:10,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-21 18:09:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-21 18:09:10,517 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:10,517 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] [2020-08-21 18:09:10,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-21 18:09:10,518 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:10,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:10,519 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-21 18:09:10,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:10,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614780667] [2020-08-21 18:09:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:10,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-21 18:09:10,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614780667] [2020-08-21 18:09:10,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:10,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:10,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708180103] [2020-08-21 18:09:10,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:10,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:10,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:10,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:10,647 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-21 18:09:10,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:10,934 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-21 18:09:10,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:10,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-21 18:09:10,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:10,938 INFO L225 Difference]: With dead ends: 1573 [2020-08-21 18:09:10,939 INFO L226 Difference]: Without dead ends: 811 [2020-08-21 18:09:10,940 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 [2020-08-21 18:09:10,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-21 18:09:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-21 18:09:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 18:09:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-21 18:09:10,982 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-21 18:09:10,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:10,983 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-21 18:09:10,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-21 18:09:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 18:09:10,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:10,985 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] [2020-08-21 18:09:10,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-21 18:09:10,986 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:10,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:10,986 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-21 18:09:10,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:10,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241703920] [2020-08-21 18:09:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:11,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-21 18:09:11,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241703920] [2020-08-21 18:09:11,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:11,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:11,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500862462] [2020-08-21 18:09:11,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:11,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:11,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:11,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:11,048 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-21 18:09:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:11,279 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-21 18:09:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:11,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-21 18:09:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:11,284 INFO L225 Difference]: With dead ends: 1601 [2020-08-21 18:09:11,284 INFO L226 Difference]: Without dead ends: 811 [2020-08-21 18:09:11,286 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 [2020-08-21 18:09:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-21 18:09:11,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-21 18:09:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 18:09:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-21 18:09:11,331 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-21 18:09:11,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:11,332 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-21 18:09:11,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-21 18:09:11,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 18:09:11,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:11,335 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] [2020-08-21 18:09:11,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-21 18:09:11,335 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:11,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:11,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-21 18:09:11,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:11,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667908199] [2020-08-21 18:09:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 18:09:11,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667908199] [2020-08-21 18:09:11,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:11,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:11,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48510502] [2020-08-21 18:09:11,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:11,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:11,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:11,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:11,431 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-21 18:09:11,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:11,718 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-21 18:09:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:11,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-21 18:09:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:11,723 INFO L225 Difference]: With dead ends: 1656 [2020-08-21 18:09:11,723 INFO L226 Difference]: Without dead ends: 866 [2020-08-21 18:09:11,725 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 [2020-08-21 18:09:11,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-21 18:09:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-21 18:09:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-21 18:09:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-21 18:09:11,769 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-21 18:09:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:11,770 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-21 18:09:11,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-21 18:09:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 18:09:11,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:11,773 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] [2020-08-21 18:09:11,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-21 18:09:11,773 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:11,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:11,773 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-21 18:09:11,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:11,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145184118] [2020-08-21 18:09:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:11,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 18:09:11,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145184118] [2020-08-21 18:09:11,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:11,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:11,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119101515] [2020-08-21 18:09:11,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:11,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:11,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:11,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:11,859 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-21 18:09:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:12,114 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-21 18:09:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:12,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-21 18:09:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:12,119 INFO L225 Difference]: With dead ends: 1705 [2020-08-21 18:09:12,119 INFO L226 Difference]: Without dead ends: 850 [2020-08-21 18:09:12,121 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 [2020-08-21 18:09:12,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-21 18:09:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-21 18:09:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-21 18:09:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-21 18:09:12,164 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-21 18:09:12,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:12,164 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-21 18:09:12,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-21 18:09:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 18:09:12,167 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:12,167 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] [2020-08-21 18:09:12,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-21 18:09:12,167 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:12,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:12,168 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-21 18:09:12,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:12,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148159628] [2020-08-21 18:09:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:12,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-21 18:09:12,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148159628] [2020-08-21 18:09:12,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:12,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:12,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146169693] [2020-08-21 18:09:12,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:12,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:12,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:12,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:12,257 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-21 18:09:12,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:12,506 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-21 18:09:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:12,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-21 18:09:12,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:12,511 INFO L225 Difference]: With dead ends: 1671 [2020-08-21 18:09:12,511 INFO L226 Difference]: Without dead ends: 848 [2020-08-21 18:09:12,514 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 [2020-08-21 18:09:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-21 18:09:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-21 18:09:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-21 18:09:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-21 18:09:12,561 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-21 18:09:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:12,562 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-21 18:09:12,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-21 18:09:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 18:09:12,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:12,564 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] [2020-08-21 18:09:12,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-21 18:09:12,565 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:12,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:12,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-21 18:09:12,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:12,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710029537] [2020-08-21 18:09:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:12,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-21 18:09:12,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710029537] [2020-08-21 18:09:12,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:12,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:09:12,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789024821] [2020-08-21 18:09:12,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:09:12,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:12,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:09:12,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:12,634 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-21 18:09:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:12,899 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-21 18:09:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:09:12,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-21 18:09:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:12,904 INFO L225 Difference]: With dead ends: 1671 [2020-08-21 18:09:12,904 INFO L226 Difference]: Without dead ends: 831 [2020-08-21 18:09:12,907 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 [2020-08-21 18:09:12,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-21 18:09:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-21 18:09:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-21 18:09:12,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-21 18:09:12,968 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-21 18:09:12,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:12,969 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-21 18:09:12,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:09:12,969 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-21 18:09:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 18:09:12,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:12,972 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] [2020-08-21 18:09:12,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-21 18:09:12,972 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-21 18:09:12,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:12,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972560103] [2020-08-21 18:09:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:13,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-21 18:09:13,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972560103] [2020-08-21 18:09:13,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:13,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:09:13,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491490707] [2020-08-21 18:09:13,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:09:13,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:13,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:09:13,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:09:13,071 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-21 18:09:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:13,166 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-21 18:09:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:09:13,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-21 18:09:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:13,174 INFO L225 Difference]: With dead ends: 2417 [2020-08-21 18:09:13,175 INFO L226 Difference]: Without dead ends: 1611 [2020-08-21 18:09:13,177 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 [2020-08-21 18:09:13,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-21 18:09:13,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-21 18:09:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-21 18:09:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-21 18:09:13,238 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-21 18:09:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:13,238 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-21 18:09:13,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:09:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-21 18:09:13,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 18:09:13,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:13,241 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] [2020-08-21 18:09:13,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-21 18:09:13,242 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:13,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:13,243 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-21 18:09:13,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:13,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133443760] [2020-08-21 18:09:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:13,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-21 18:09:13,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133443760] [2020-08-21 18:09:13,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:13,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:09:13,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160835830] [2020-08-21 18:09:13,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:09:13,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:13,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:09:13,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:09:13,346 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-21 18:09:13,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:13,451 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-21 18:09:13,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:09:13,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-21 18:09:13,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:13,461 INFO L225 Difference]: With dead ends: 2416 [2020-08-21 18:09:13,462 INFO L226 Difference]: Without dead ends: 1608 [2020-08-21 18:09:13,465 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 [2020-08-21 18:09:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-21 18:09:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-21 18:09:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-21 18:09:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-21 18:09:13,579 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-21 18:09:13,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:13,580 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-21 18:09:13,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:09:13,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-21 18:09:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-21 18:09:13,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:13,583 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] [2020-08-21 18:09:13,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-21 18:09:13,584 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:13,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-21 18:09:13,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:13,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359706756] [2020-08-21 18:09:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-21 18:09:13,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359706756] [2020-08-21 18:09:13,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:13,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:09:13,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080295114] [2020-08-21 18:09:13,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:09:13,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:13,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:09:13,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:09:13,716 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-21 18:09:14,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:14,016 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-21 18:09:14,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:09:14,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-21 18:09:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:14,034 INFO L225 Difference]: With dead ends: 4752 [2020-08-21 18:09:14,035 INFO L226 Difference]: Without dead ends: 3159 [2020-08-21 18:09:14,041 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 [2020-08-21 18:09:14,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-21 18:09:14,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-21 18:09:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-21 18:09:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-21 18:09:14,168 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-21 18:09:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:14,169 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-21 18:09:14,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:09:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-21 18:09:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 18:09:14,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:14,173 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] [2020-08-21 18:09:14,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-21 18:09:14,173 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:14,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:14,173 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-21 18:09:14,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:14,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912473826] [2020-08-21 18:09:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:14,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-21 18:09:14,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912473826] [2020-08-21 18:09:14,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:14,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:09:14,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713547753] [2020-08-21 18:09:14,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:09:14,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:14,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:09:14,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:09:14,267 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-21 18:09:14,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:14,621 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-21 18:09:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:09:14,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-21 18:09:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:14,653 INFO L225 Difference]: With dead ends: 4792 [2020-08-21 18:09:14,655 INFO L226 Difference]: Without dead ends: 3199 [2020-08-21 18:09:14,661 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 [2020-08-21 18:09:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-21 18:09:14,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-21 18:09:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-21 18:09:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-21 18:09:14,969 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-21 18:09:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:14,969 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-21 18:09:14,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:09:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-21 18:09:14,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 18:09:14,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:14,974 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] [2020-08-21 18:09:14,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-21 18:09:14,974 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:14,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:14,974 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-21 18:09:14,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:14,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861252490] [2020-08-21 18:09:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:09:15,020 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:09:15,020 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:09:15,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-21 18:09:15,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:09:15 BoogieIcfgContainer [2020-08-21 18:09:15,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:09:15,103 INFO L168 Benchmark]: Toolchain (without parser) took 16102.71 ms. Allocated memory was 140.5 MB in the beginning and 523.8 MB in the end (delta: 383.3 MB). Free memory was 103.7 MB in the beginning and 451.7 MB in the end (delta: -348.0 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:15,104 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:09:15,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.93 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 178.8 MB in the end (delta: -75.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:15,105 INFO L168 Benchmark]: Boogie Preprocessor took 68.06 ms. Allocated memory is still 203.9 MB. Free memory was 178.8 MB in the beginning and 176.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:15,106 INFO L168 Benchmark]: RCFGBuilder took 938.39 ms. Allocated memory is still 203.9 MB. Free memory was 176.0 MB in the beginning and 118.1 MB in the end (delta: 57.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:15,106 INFO L168 Benchmark]: TraceAbstraction took 14571.14 ms. Allocated memory was 203.9 MB in the beginning and 523.8 MB in the end (delta: 319.8 MB). Free memory was 117.4 MB in the beginning and 451.7 MB in the end (delta: -334.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:09:15,109 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 519.93 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 178.8 MB in the end (delta: -75.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.06 ms. Allocated memory is still 203.9 MB. Free memory was 178.8 MB in the beginning and 176.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 938.39 ms. Allocated memory is still 203.9 MB. Free memory was 176.0 MB in the beginning and 118.1 MB in the end (delta: 57.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14571.14 ms. Allocated memory was 203.9 MB in the beginning and 523.8 MB in the end (delta: 319.8 MB). Free memory was 117.4 MB in the beginning and 451.7 MB in the end (delta: -334.3 MB). There was no memory consumed. 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: 14.4s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 9.3s, 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, 1.7s 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...