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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 21:00:58,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 21:00:58,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 21:00:58,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 21:00:58,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 21:00:58,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 21:00:58,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 21:00:59,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 21:00:59,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 21:00:59,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 21:00:59,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 21:00:59,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 21:00:59,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 21:00:59,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 21:00:59,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 21:00:59,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 21:00:59,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 21:00:59,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 21:00:59,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 21:00:59,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 21:00:59,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 21:00:59,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 21:00:59,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 21:00:59,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 21:00:59,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 21:00:59,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 21:00:59,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 21:00:59,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 21:00:59,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 21:00:59,053 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 21:00:59,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 21:00:59,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 21:00:59,055 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 21:00:59,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 21:00:59,056 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 21:00:59,056 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 21:00:59,056 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 21:00:59,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 21:00:59,057 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 21:00:59,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 21:00:59,058 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 21:00:59,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 21:00:59,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 21:00:59,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 21:00:59,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 21:00:59,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 21:00:59,059 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 21:00:59,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 21:00:59,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 21:00:59,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 21:00:59,061 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 21:00:59,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 21:00:59,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 21:00:59,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 21:00:59,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 21:00:59,062 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 21:00:59,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 21:00:59,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 21:00:59,063 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 21:00:59,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 21:00:59,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 21:00:59,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 21:00:59,133 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 21:00:59,134 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 21:00:59,135 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label28.c [2019-10-02 21:00:59,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee546c3af/41d30c1c492e4feab418e4ffeccda17e/FLAG5d9e1c886 [2019-10-02 21:00:59,847 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 21:00:59,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label28.c [2019-10-02 21:00:59,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee546c3af/41d30c1c492e4feab418e4ffeccda17e/FLAG5d9e1c886 [2019-10-02 21:01:00,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee546c3af/41d30c1c492e4feab418e4ffeccda17e [2019-10-02 21:01:00,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 21:01:00,049 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 21:01:00,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 21:01:00,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 21:01:00,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 21:01:00,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:01:00" (1/1) ... [2019-10-02 21:01:00,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283534bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:00, skipping insertion in model container [2019-10-02 21:01:00,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:01:00" (1/1) ... [2019-10-02 21:01:00,066 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 21:01:00,147 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 21:01:01,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:01:01,065 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 21:01:01,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:01:01,489 INFO L192 MainTranslator]: Completed translation [2019-10-02 21:01:01,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:01 WrapperNode [2019-10-02 21:01:01,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 21:01:01,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 21:01:01,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 21:01:01,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 21:01:01,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:01" (1/1) ... [2019-10-02 21:01:01,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:01" (1/1) ... [2019-10-02 21:01:01,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:01" (1/1) ... [2019-10-02 21:01:01,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:01" (1/1) ... [2019-10-02 21:01:01,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:01" (1/1) ... [2019-10-02 21:01:01,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:01" (1/1) ... [2019-10-02 21:01:01,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:01" (1/1) ... [2019-10-02 21:01:01,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 21:01:01,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 21:01:01,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 21:01:01,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 21:01:01,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-02 21:01:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 21:01:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 21:01:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 21:01:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 21:01:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 21:01:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 21:01:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 21:01:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 21:01:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 21:01:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 21:01:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 21:01:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 21:01:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 21:01:04,981 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 21:01:04,981 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 21:01:04,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:01:04 BoogieIcfgContainer [2019-10-02 21:01:04,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 21:01:04,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 21:01:04,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 21:01:04,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 21:01:04,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 09:01:00" (1/3) ... [2019-10-02 21:01:04,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a8cf90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:01:04, skipping insertion in model container [2019-10-02 21:01:04,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:01:01" (2/3) ... [2019-10-02 21:01:04,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a8cf90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:01:04, skipping insertion in model container [2019-10-02 21:01:04,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:01:04" (3/3) ... [2019-10-02 21:01:04,994 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label28.c [2019-10-02 21:01:05,005 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 21:01:05,016 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 21:01:05,035 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 21:01:05,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 21:01:05,071 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 21:01:05,072 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 21:01:05,072 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 21:01:05,072 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 21:01:05,072 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 21:01:05,072 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 21:01:05,073 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 21:01:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-10-02 21:01:05,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-02 21:01:05,135 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:01:05,136 INFO L411 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] [2019-10-02 21:01:05,139 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:01:05,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:01:05,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1729511136, now seen corresponding path program 1 times [2019-10-02 21:01:05,150 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:01:05,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:05,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:01:05,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:05,213 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:01:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:01:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:01:05,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:01:05,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 21:01:05,523 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:01:05,530 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 21:01:05,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 21:01:05,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 21:01:05,550 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 3 states. [2019-10-02 21:01:08,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:01:08,499 INFO L93 Difference]: Finished difference Result 760 states and 1275 transitions. [2019-10-02 21:01:08,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 21:01:08,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-10-02 21:01:08,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:01:08,525 INFO L225 Difference]: With dead ends: 760 [2019-10-02 21:01:08,525 INFO L226 Difference]: Without dead ends: 692 [2019-10-02 21:01:08,527 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 21:01:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2019-10-02 21:01:08,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 690. [2019-10-02 21:01:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-02 21:01:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1154 transitions. [2019-10-02 21:01:08,629 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1154 transitions. Word has length 38 [2019-10-02 21:01:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:01:08,629 INFO L475 AbstractCegarLoop]: Abstraction has 690 states and 1154 transitions. [2019-10-02 21:01:08,630 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 21:01:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1154 transitions. [2019-10-02 21:01:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-02 21:01:08,636 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:01:08,636 INFO L411 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, 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] [2019-10-02 21:01:08,636 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:01:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:01:08,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1320950948, now seen corresponding path program 1 times [2019-10-02 21:01:08,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:01:08,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:08,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:01:08,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:08,639 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:01:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:01:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:01:08,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:01:08,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 21:01:08,873 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:01:08,875 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 21:01:08,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 21:01:08,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 21:01:08,876 INFO L87 Difference]: Start difference. First operand 690 states and 1154 transitions. Second operand 6 states. [2019-10-02 21:01:13,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:01:13,065 INFO L93 Difference]: Finished difference Result 1373 states and 2305 transitions. [2019-10-02 21:01:13,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 21:01:13,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2019-10-02 21:01:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:01:13,082 INFO L225 Difference]: With dead ends: 1373 [2019-10-02 21:01:13,082 INFO L226 Difference]: Without dead ends: 1373 [2019-10-02 21:01:13,084 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 21:01:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2019-10-02 21:01:13,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1342. [2019-10-02 21:01:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2019-10-02 21:01:13,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 2245 transitions. [2019-10-02 21:01:13,164 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 2245 transitions. Word has length 111 [2019-10-02 21:01:13,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:01:13,165 INFO L475 AbstractCegarLoop]: Abstraction has 1342 states and 2245 transitions. [2019-10-02 21:01:13,165 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 21:01:13,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 2245 transitions. [2019-10-02 21:01:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-02 21:01:13,169 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:01:13,170 INFO L411 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 21:01:13,170 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:01:13,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:01:13,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1532585933, now seen corresponding path program 1 times [2019-10-02 21:01:13,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:01:13,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:13,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:01:13,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:13,173 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:01:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:01:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:01:13,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:01:13,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 21:01:13,353 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:01:13,356 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 21:01:13,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 21:01:13,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 21:01:13,357 INFO L87 Difference]: Start difference. First operand 1342 states and 2245 transitions. Second operand 5 states. [2019-10-02 21:01:18,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:01:18,054 INFO L93 Difference]: Finished difference Result 2654 states and 3852 transitions. [2019-10-02 21:01:18,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 21:01:18,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2019-10-02 21:01:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:01:18,078 INFO L225 Difference]: With dead ends: 2654 [2019-10-02 21:01:18,080 INFO L226 Difference]: Without dead ends: 2654 [2019-10-02 21:01:18,084 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 21:01:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2019-10-02 21:01:18,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2615. [2019-10-02 21:01:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2615 states. [2019-10-02 21:01:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3768 transitions. [2019-10-02 21:01:18,188 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3768 transitions. Word has length 114 [2019-10-02 21:01:18,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:01:18,190 INFO L475 AbstractCegarLoop]: Abstraction has 2615 states and 3768 transitions. [2019-10-02 21:01:18,190 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 21:01:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3768 transitions. [2019-10-02 21:01:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-02 21:01:18,199 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:01:18,199 INFO L411 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 21:01:18,199 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:01:18,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:01:18,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1482212639, now seen corresponding path program 1 times [2019-10-02 21:01:18,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:01:18,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:18,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:01:18,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:18,203 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:01:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:01:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:01:18,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:01:18,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 21:01:18,438 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:01:18,439 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 21:01:18,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 21:01:18,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 21:01:18,440 INFO L87 Difference]: Start difference. First operand 2615 states and 3768 transitions. Second operand 6 states. [2019-10-02 21:01:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:01:22,721 INFO L93 Difference]: Finished difference Result 3963 states and 5759 transitions. [2019-10-02 21:01:22,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 21:01:22,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2019-10-02 21:01:22,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:01:22,753 INFO L225 Difference]: With dead ends: 3963 [2019-10-02 21:01:22,754 INFO L226 Difference]: Without dead ends: 3963 [2019-10-02 21:01:22,755 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 21:01:22,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2019-10-02 21:01:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 3910. [2019-10-02 21:01:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3910 states. [2019-10-02 21:01:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3910 states to 3910 states and 5486 transitions. [2019-10-02 21:01:22,871 INFO L78 Accepts]: Start accepts. Automaton has 3910 states and 5486 transitions. Word has length 124 [2019-10-02 21:01:22,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:01:22,873 INFO L475 AbstractCegarLoop]: Abstraction has 3910 states and 5486 transitions. [2019-10-02 21:01:22,873 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 21:01:22,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3910 states and 5486 transitions. [2019-10-02 21:01:22,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-02 21:01:22,877 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:01:22,878 INFO L411 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 21:01:22,878 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:01:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:01:22,878 INFO L82 PathProgramCache]: Analyzing trace with hash 934964196, now seen corresponding path program 1 times [2019-10-02 21:01:22,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:01:22,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:22,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:01:22,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:22,880 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:01:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:01:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:01:22,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:01:22,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 21:01:22,995 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:01:22,995 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 21:01:22,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 21:01:22,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 21:01:22,996 INFO L87 Difference]: Start difference. First operand 3910 states and 5486 transitions. Second operand 5 states. [2019-10-02 21:01:28,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:01:28,652 INFO L93 Difference]: Finished difference Result 6176 states and 8536 transitions. [2019-10-02 21:01:28,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 21:01:28,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2019-10-02 21:01:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:01:28,684 INFO L225 Difference]: With dead ends: 6176 [2019-10-02 21:01:28,684 INFO L226 Difference]: Without dead ends: 6176 [2019-10-02 21:01:28,685 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 21:01:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6176 states. [2019-10-02 21:01:28,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6176 to 6153. [2019-10-02 21:01:28,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6153 states. [2019-10-02 21:01:28,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 8483 transitions. [2019-10-02 21:01:28,824 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 8483 transitions. Word has length 134 [2019-10-02 21:01:28,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:01:28,824 INFO L475 AbstractCegarLoop]: Abstraction has 6153 states and 8483 transitions. [2019-10-02 21:01:28,825 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 21:01:28,825 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 8483 transitions. [2019-10-02 21:01:28,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-02 21:01:28,827 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:01:28,827 INFO L411 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 21:01:28,827 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:01:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:01:28,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1847889797, now seen corresponding path program 1 times [2019-10-02 21:01:28,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:01:28,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:28,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:01:28,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:01:28,829 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:01:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:01:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:01:29,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 21:01:29,068 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 21:01:29,069 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2019-10-02 21:01:29,071 INFO L207 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1648], [1652], [1654], [1661], [1662], [1663], [1665], [1666] [2019-10-02 21:01:29,178 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 21:01:29,179 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 21:01:33,373 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 21:01:33,376 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Performed 269 root evaluator evaluations with a maximum evaluation depth of 13. Performed 269 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 21:01:33,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:01:33,380 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 21:01:35,603 INFO L227 lantSequenceWeakener]: Weakened 135 states. On average, predicates are now at 78.17% of their original sizes. [2019-10-02 21:01:35,604 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 21:01:35,705 INFO L420 sIntCurrentIteration]: We unified 148 AI predicates to 148 [2019-10-02 21:01:35,706 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 21:01:35,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 21:01:35,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2019-10-02 21:01:35,707 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:01:35,708 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 21:01:35,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 21:01:35,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-02 21:01:35,710 INFO L87 Difference]: Start difference. First operand 6153 states and 8483 transitions. Second operand 11 states. [2019-10-02 21:01:48,632 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.