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/Problem13_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 17:03:52,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 17:03:52,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 17:03:52,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 17:03:52,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 17:03:52,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 17:03:52,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 17:03:52,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 17:03:52,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 17:03:52,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 17:03:52,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 17:03:52,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 17:03:52,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 17:03:52,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 17:03:52,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 17:03:52,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 17:03:52,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 17:03:52,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 17:03:52,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 17:03:52,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 17:03:52,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 17:03:52,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 17:03:52,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 17:03:52,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 17:03:52,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 17:03:52,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 17:03:52,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 17:03:52,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 17:03:52,958 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 [2019-09-09 17:03:52,972 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 17:03:52,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 17:03:52,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 17:03:52,973 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 17:03:52,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 17:03:52,974 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 17:03:52,974 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 17:03:52,974 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 17:03:52,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 17:03:52,974 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 17:03:52,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 17:03:52,975 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 17:03:52,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 17:03:52,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 17:03:52,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 17:03:52,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 17:03:52,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 17:03:52,976 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 17:03:52,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 17:03:52,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 17:03:52,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 17:03:52,977 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 17:03:52,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 17:03:52,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 17:03:52,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 17:03:52,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 17:03:52,978 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 17:03:52,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 17:03:52,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 17:03:52,979 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 17:03:53,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 17:03:53,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 17:03:53,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 17:03:53,028 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 17:03:53,028 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 17:03:53,029 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label11.c [2019-09-09 17:03:53,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/848fde2b7/8a666fca78a14f90aed9485689a6248e/FLAGe031ee50f [2019-09-09 17:03:53,944 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 17:03:53,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label11.c [2019-09-09 17:03:53,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/848fde2b7/8a666fca78a14f90aed9485689a6248e/FLAGe031ee50f [2019-09-09 17:03:54,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/848fde2b7/8a666fca78a14f90aed9485689a6248e [2019-09-09 17:03:54,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 17:03:54,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 17:03:54,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 17:03:54,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 17:03:54,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 17:03:54,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:03:54" (1/1) ... [2019-09-09 17:03:54,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbe1c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:54, skipping insertion in model container [2019-09-09 17:03:54,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:03:54" (1/1) ... [2019-09-09 17:03:54,480 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 17:03:54,665 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 17:03:56,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:03:56,419 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 17:03:57,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:03:57,083 INFO L192 MainTranslator]: Completed translation [2019-09-09 17:03:57,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:57 WrapperNode [2019-09-09 17:03:57,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 17:03:57,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 17:03:57,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 17:03:57,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 17:03:57,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:57" (1/1) ... [2019-09-09 17:03:57,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:57" (1/1) ... [2019-09-09 17:03:57,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:57" (1/1) ... [2019-09-09 17:03:57,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:57" (1/1) ... [2019-09-09 17:03:57,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:57" (1/1) ... [2019-09-09 17:03:57,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:57" (1/1) ... [2019-09-09 17:03:57,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:57" (1/1) ... [2019-09-09 17:03:57,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 17:03:57,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 17:03:57,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 17:03:57,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 17:03:57,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:57" (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 [2019-09-09 17:03:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 17:03:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 17:03:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 17:03:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 17:03:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 17:03:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 17:03:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 17:03:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 17:03:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 17:03:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 17:03:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 17:03:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 17:03:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 17:03:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 17:03:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 17:03:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 17:03:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 17:04:03,690 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 17:04:03,691 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 17:04:03,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:04:03 BoogieIcfgContainer [2019-09-09 17:04:03,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 17:04:03,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 17:04:03,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 17:04:03,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 17:04:03,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:03:54" (1/3) ... [2019-09-09 17:04:03,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef89078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:04:03, skipping insertion in model container [2019-09-09 17:04:03,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:03:57" (2/3) ... [2019-09-09 17:04:03,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef89078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:04:03, skipping insertion in model container [2019-09-09 17:04:03,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:04:03" (3/3) ... [2019-09-09 17:04:03,712 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label11.c [2019-09-09 17:04:03,722 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 17:04:03,731 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 17:04:03,749 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 17:04:03,778 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 17:04:03,778 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 17:04:03,778 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 17:04:03,778 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 17:04:03,778 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 17:04:03,778 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 17:04:03,779 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 17:04:03,779 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 17:04:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-09 17:04:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-09 17:04:03,841 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:04:03,842 INFO L399 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] [2019-09-09 17:04:03,844 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:04:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:04:03,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1048345647, now seen corresponding path program 1 times [2019-09-09 17:04:03,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:04:03,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:03,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:04:03,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:03,903 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:04:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:04:04,238 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2019-09-09 17:04:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:04:04,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:04:04,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 17:04:04,266 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:04:04,272 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 17:04:04,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 17:04:04,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 17:04:04,291 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 3 states. [2019-09-09 17:04:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:04:10,883 INFO L93 Difference]: Finished difference Result 1977 states and 3509 transitions. [2019-09-09 17:04:10,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 17:04:10,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-09-09 17:04:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:04:10,917 INFO L225 Difference]: With dead ends: 1977 [2019-09-09 17:04:10,918 INFO L226 Difference]: Without dead ends: 1909 [2019-09-09 17:04:10,919 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 17:04:10,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2019-09-09 17:04:11,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1895. [2019-09-09 17:04:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2019-09-09 17:04:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 3364 transitions. [2019-09-09 17:04:11,060 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 3364 transitions. Word has length 32 [2019-09-09 17:04:11,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:04:11,060 INFO L475 AbstractCegarLoop]: Abstraction has 1895 states and 3364 transitions. [2019-09-09 17:04:11,061 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 17:04:11,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 3364 transitions. [2019-09-09 17:04:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-09 17:04:11,066 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:04:11,066 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 17:04:11,066 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:04:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:04:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash -598083127, now seen corresponding path program 1 times [2019-09-09 17:04:11,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:04:11,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:11,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:04:11,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:11,069 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:04:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:04:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:04:11,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:04:11,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 17:04:11,283 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:04:11,285 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 17:04:11,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 17:04:11,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 17:04:11,286 INFO L87 Difference]: Start difference. First operand 1895 states and 3364 transitions. Second operand 6 states. [2019-09-09 17:04:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:04:19,116 INFO L93 Difference]: Finished difference Result 3610 states and 5770 transitions. [2019-09-09 17:04:19,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 17:04:19,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2019-09-09 17:04:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:04:19,138 INFO L225 Difference]: With dead ends: 3610 [2019-09-09 17:04:19,138 INFO L226 Difference]: Without dead ends: 3610 [2019-09-09 17:04:19,139 INFO L628 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 [2019-09-09 17:04:19,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2019-09-09 17:04:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 3579. [2019-09-09 17:04:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3579 states. [2019-09-09 17:04:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 5705 transitions. [2019-09-09 17:04:19,242 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 5705 transitions. Word has length 114 [2019-09-09 17:04:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:04:19,243 INFO L475 AbstractCegarLoop]: Abstraction has 3579 states and 5705 transitions. [2019-09-09 17:04:19,243 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 17:04:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 5705 transitions. [2019-09-09 17:04:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-09 17:04:19,246 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:04:19,246 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 17:04:19,246 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:04:19,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:04:19,247 INFO L82 PathProgramCache]: Analyzing trace with hash -913630183, now seen corresponding path program 1 times [2019-09-09 17:04:19,247 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:04:19,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:19,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:04:19,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:19,248 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:04:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:04:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:04:19,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:04:19,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 17:04:19,373 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:04:19,374 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 17:04:19,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 17:04:19,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 17:04:19,375 INFO L87 Difference]: Start difference. First operand 3579 states and 5705 transitions. Second operand 5 states. [2019-09-09 17:04:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:04:27,956 INFO L93 Difference]: Finished difference Result 7227 states and 10803 transitions. [2019-09-09 17:04:27,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 17:04:27,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2019-09-09 17:04:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:04:28,002 INFO L225 Difference]: With dead ends: 7227 [2019-09-09 17:04:28,002 INFO L226 Difference]: Without dead ends: 7227 [2019-09-09 17:04:28,003 INFO L628 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 [2019-09-09 17:04:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2019-09-09 17:04:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7042. [2019-09-09 17:04:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7042 states. [2019-09-09 17:04:28,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7042 states to 7042 states and 10398 transitions. [2019-09-09 17:04:28,190 INFO L78 Accepts]: Start accepts. Automaton has 7042 states and 10398 transitions. Word has length 130 [2019-09-09 17:04:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:04:28,191 INFO L475 AbstractCegarLoop]: Abstraction has 7042 states and 10398 transitions. [2019-09-09 17:04:28,191 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 17:04:28,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7042 states and 10398 transitions. [2019-09-09 17:04:28,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-09-09 17:04:28,194 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:04:28,195 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 17:04:28,195 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:04:28,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:04:28,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1665455717, now seen corresponding path program 1 times [2019-09-09 17:04:28,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:04:28,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:28,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:04:28,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:28,197 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:04:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:04:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:04:28,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:04:28,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 17:04:28,464 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:04:28,465 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 17:04:28,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 17:04:28,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 17:04:28,466 INFO L87 Difference]: Start difference. First operand 7042 states and 10398 transitions. Second operand 6 states. [2019-09-09 17:04:36,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:04:36,068 INFO L93 Difference]: Finished difference Result 10918 states and 16309 transitions. [2019-09-09 17:04:36,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 17:04:36,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2019-09-09 17:04:36,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:04:36,126 INFO L225 Difference]: With dead ends: 10918 [2019-09-09 17:04:36,126 INFO L226 Difference]: Without dead ends: 10918 [2019-09-09 17:04:36,127 INFO L628 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 [2019-09-09 17:04:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10918 states. [2019-09-09 17:04:36,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10918 to 10727. [2019-09-09 17:04:36,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10727 states. [2019-09-09 17:04:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10727 states to 10727 states and 15561 transitions. [2019-09-09 17:04:36,396 INFO L78 Accepts]: Start accepts. Automaton has 10727 states and 15561 transitions. Word has length 167 [2019-09-09 17:04:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:04:36,398 INFO L475 AbstractCegarLoop]: Abstraction has 10727 states and 15561 transitions. [2019-09-09 17:04:36,398 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 17:04:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 10727 states and 15561 transitions. [2019-09-09 17:04:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-09-09 17:04:36,404 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:04:36,405 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 17:04:36,405 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:04:36,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:04:36,405 INFO L82 PathProgramCache]: Analyzing trace with hash 867061508, now seen corresponding path program 1 times [2019-09-09 17:04:36,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:04:36,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:36,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:04:36,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:36,407 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:04:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:04:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:04:36,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:04:36,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 17:04:36,749 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:04:36,751 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 17:04:36,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 17:04:36,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 17:04:36,753 INFO L87 Difference]: Start difference. First operand 10727 states and 15561 transitions. Second operand 6 states. [2019-09-09 17:04:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:04:51,134 INFO L93 Difference]: Finished difference Result 26286 states and 40914 transitions. [2019-09-09 17:04:51,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-09 17:04:51,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2019-09-09 17:04:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:04:51,286 INFO L225 Difference]: With dead ends: 26286 [2019-09-09 17:04:51,286 INFO L226 Difference]: Without dead ends: 26286 [2019-09-09 17:04:51,287 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-09 17:04:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26286 states. [2019-09-09 17:04:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26286 to 26083. [2019-09-09 17:04:51,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26083 states. [2019-09-09 17:04:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26083 states to 26083 states and 38087 transitions. [2019-09-09 17:04:52,022 INFO L78 Accepts]: Start accepts. Automaton has 26083 states and 38087 transitions. Word has length 189 [2019-09-09 17:04:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:04:52,023 INFO L475 AbstractCegarLoop]: Abstraction has 26083 states and 38087 transitions. [2019-09-09 17:04:52,023 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 17:04:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 26083 states and 38087 transitions. [2019-09-09 17:04:52,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-09-09 17:04:52,029 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:04:52,030 INFO L399 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, 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, 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] [2019-09-09 17:04:52,030 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:04:52,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:04:52,031 INFO L82 PathProgramCache]: Analyzing trace with hash -204712007, now seen corresponding path program 1 times [2019-09-09 17:04:52,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:04:52,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:52,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:04:52,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:04:52,035 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:04:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:04:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:04:52,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 17:04:52,275 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 17:04:52,276 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2019-09-09 17:04:52,279 INFO L207 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2791], [2793], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3171], [3176], [3178], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4251], [4255], [4257], [4268], [4269], [4270], [4272], [4273] [2019-09-09 17:04:52,342 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 17:04:52,343 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 17:06:04,204 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 17:06:04,207 INFO L272 AbstractInterpreter]: Visited 123 different actions 123 times. Never merged. Never widened. Performed 164 root evaluator evaluations with a maximum evaluation depth of 17. Performed 164 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 17:06:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:06:04,212 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 17:07:10,250 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 70.92% of their original sizes. [2019-09-09 17:07:10,251 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 17:07:10,310 INFO L420 sIntCurrentIteration]: We unified 233 AI predicates to 233 [2019-09-09 17:07:10,311 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 17:07:10,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 17:07:10,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2019-09-09 17:07:10,312 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:07:10,314 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-09 17:07:10,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-09 17:07:10,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-09 17:07:10,314 INFO L87 Difference]: Start difference. First operand 26083 states and 38087 transitions. Second operand 8 states. [2019-09-09 17:09:45,602 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.