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/Problem02_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 17:33:58,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 17:33:58,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 17:33:58,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 17:33:58,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 17:33:58,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 17:33:58,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 17:33:58,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 17:33:58,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 17:33:58,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 17:33:58,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 17:33:58,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 17:33:58,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 17:33:58,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 17:33:58,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 17:33:58,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 17:33:58,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 17:33:58,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 17:33:58,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 17:33:58,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 17:33:59,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 17:33:59,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 17:33:59,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 17:33:59,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 17:33:59,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 17:33:59,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 17:33:59,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 17:33:59,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 17:33:59,005 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 17:33:59,020 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 17:33:59,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 17:33:59,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 17:33:59,021 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 17:33:59,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 17:33:59,022 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 17:33:59,022 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 17:33:59,022 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 17:33:59,023 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 17:33:59,023 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 17:33:59,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 17:33:59,024 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 17:33:59,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 17:33:59,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 17:33:59,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 17:33:59,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 17:33:59,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 17:33:59,025 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 17:33:59,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 17:33:59,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 17:33:59,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 17:33:59,026 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 17:33:59,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 17:33:59,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:33:59,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 17:33:59,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 17:33:59,027 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 17:33:59,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 17:33:59,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 17:33:59,027 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 17:33:59,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 17:33:59,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 17:33:59,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 17:33:59,075 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 17:33:59,076 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 17:33:59,077 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label38.c [2019-10-02 17:33:59,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7c857ef/fc9a67684e064823865b65ceb3518c06/FLAGba718cba1 [2019-10-02 17:33:59,655 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 17:33:59,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label38.c [2019-10-02 17:33:59,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7c857ef/fc9a67684e064823865b65ceb3518c06/FLAGba718cba1 [2019-10-02 17:33:59,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7c857ef/fc9a67684e064823865b65ceb3518c06 [2019-10-02 17:33:59,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 17:33:59,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 17:33:59,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 17:33:59,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 17:33:59,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 17:33:59,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:33:59" (1/1) ... [2019-10-02 17:33:59,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a266f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:33:59, skipping insertion in model container [2019-10-02 17:33:59,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:33:59" (1/1) ... [2019-10-02 17:34:00,006 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 17:34:00,063 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 17:34:00,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:34:00,786 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 17:34:00,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:34:00,906 INFO L192 MainTranslator]: Completed translation [2019-10-02 17:34:00,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:34:00 WrapperNode [2019-10-02 17:34:00,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 17:34:00,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 17:34:00,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 17:34:00,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 17:34:00,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:34:00" (1/1) ... [2019-10-02 17:34:00,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:34:00" (1/1) ... [2019-10-02 17:34:00,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:34:00" (1/1) ... [2019-10-02 17:34:00,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:34:00" (1/1) ... [2019-10-02 17:34:00,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:34:00" (1/1) ... [2019-10-02 17:34:01,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:34:00" (1/1) ... [2019-10-02 17:34:01,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:34:00" (1/1) ... [2019-10-02 17:34:01,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 17:34:01,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 17:34:01,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 17:34:01,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 17:34:01,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:34:00" (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 17:34:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 17:34:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 17:34:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 17:34:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 17:34:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 17:34:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 17:34:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 17:34:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 17:34:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 17:34:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 17:34:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 17:34:02,238 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 17:34:02,239 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 17:34:02,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:34:02 BoogieIcfgContainer [2019-10-02 17:34:02,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 17:34:02,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 17:34:02,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 17:34:02,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 17:34:02,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 05:33:59" (1/3) ... [2019-10-02 17:34:02,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70defa7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:34:02, skipping insertion in model container [2019-10-02 17:34:02,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:34:00" (2/3) ... [2019-10-02 17:34:02,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70defa7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:34:02, skipping insertion in model container [2019-10-02 17:34:02,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:34:02" (3/3) ... [2019-10-02 17:34:02,255 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label38.c [2019-10-02 17:34:02,268 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 17:34:02,278 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 17:34:02,301 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 17:34:02,345 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 17:34:02,346 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 17:34:02,347 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 17:34:02,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 17:34:02,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 17:34:02,347 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 17:34:02,348 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 17:34:02,348 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 17:34:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-10-02 17:34:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-02 17:34:02,413 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:34:02,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:34:02,417 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:34:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:34:02,424 INFO L82 PathProgramCache]: Analyzing trace with hash -358112719, now seen corresponding path program 1 times [2019-10-02 17:34:02,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:34:02,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:34:02,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:34:02,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:34:02,486 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:34:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:34:02,997 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 17:34:03,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:34:03,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:34:03,001 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:34:03,009 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:34:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:34:03,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:34:03,033 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-10-02 17:34:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:34:03,964 INFO L93 Difference]: Finished difference Result 388 states and 591 transitions. [2019-10-02 17:34:03,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:34:03,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2019-10-02 17:34:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:34:03,993 INFO L225 Difference]: With dead ends: 388 [2019-10-02 17:34:03,993 INFO L226 Difference]: Without dead ends: 320 [2019-10-02 17:34:03,995 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:34:04,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-10-02 17:34:04,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2019-10-02 17:34:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2019-10-02 17:34:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 470 transitions. [2019-10-02 17:34:04,089 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 470 transitions. Word has length 137 [2019-10-02 17:34:04,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:34:04,090 INFO L475 AbstractCegarLoop]: Abstraction has 318 states and 470 transitions. [2019-10-02 17:34:04,090 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:34:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 470 transitions. [2019-10-02 17:34:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-02 17:34:04,095 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:34:04,095 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-02 17:34:04,096 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:34:04,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:34:04,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1013699816, now seen corresponding path program 1 times [2019-10-02 17:34:04,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:34:04,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:34:04,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:34:04,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:34:04,099 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:34:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:34:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:34:04,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:34:04,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:34:04,286 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:34:04,289 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:34:04,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:34:04,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:34:04,290 INFO L87 Difference]: Start difference. First operand 318 states and 470 transitions. Second operand 3 states. [2019-10-02 17:34:04,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:34:04,869 INFO L93 Difference]: Finished difference Result 616 states and 878 transitions. [2019-10-02 17:34:04,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:34:04,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2019-10-02 17:34:04,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:34:04,876 INFO L225 Difference]: With dead ends: 616 [2019-10-02 17:34:04,876 INFO L226 Difference]: Without dead ends: 616 [2019-10-02 17:34:04,877 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:34:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-02 17:34:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 611. [2019-10-02 17:34:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2019-10-02 17:34:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 868 transitions. [2019-10-02 17:34:04,922 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 868 transitions. Word has length 150 [2019-10-02 17:34:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:34:04,924 INFO L475 AbstractCegarLoop]: Abstraction has 611 states and 868 transitions. [2019-10-02 17:34:04,924 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:34:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 868 transitions. [2019-10-02 17:34:04,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-02 17:34:04,930 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:34:04,930 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-02 17:34:04,931 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:34:04,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:34:04,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1907613155, now seen corresponding path program 1 times [2019-10-02 17:34:04,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:34:04,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:34:04,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:34:04,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:34:04,933 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:34:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:34:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:34:05,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:34:05,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 17:34:05,097 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:34:05,099 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 17:34:05,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 17:34:05,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 17:34:05,100 INFO L87 Difference]: Start difference. First operand 611 states and 868 transitions. Second operand 6 states. [2019-10-02 17:34:05,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:34:05,630 INFO L93 Difference]: Finished difference Result 468 states and 623 transitions. [2019-10-02 17:34:05,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 17:34:05,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2019-10-02 17:34:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:34:05,634 INFO L225 Difference]: With dead ends: 468 [2019-10-02 17:34:05,634 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 17:34:05,635 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-02 17:34:05,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 17:34:05,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 17:34:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 17:34:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 17:34:05,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2019-10-02 17:34:05,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:34:05,636 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 17:34:05,636 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 17:34:05,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 17:34:05,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 17:34:05,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 05:34:05 BoogieIcfgContainer [2019-10-02 17:34:05,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 17:34:05,644 INFO L168 Benchmark]: Toolchain (without parser) took 5655.66 ms. Allocated memory was 140.0 MB in the beginning and 306.7 MB in the end (delta: 166.7 MB). Free memory was 86.0 MB in the beginning and 216.1 MB in the end (delta: -130.1 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2019-10-02 17:34:05,645 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 17:34:05,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 917.48 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 85.8 MB in the beginning and 162.5 MB in the end (delta: -76.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-10-02 17:34:05,647 INFO L168 Benchmark]: Boogie Preprocessor took 134.43 ms. Allocated memory is still 202.9 MB. Free memory was 162.5 MB in the beginning and 157.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2019-10-02 17:34:05,648 INFO L168 Benchmark]: RCFGBuilder took 1201.89 ms. Allocated memory was 202.9 MB in the beginning and 227.5 MB in the end (delta: 24.6 MB). Free memory was 157.5 MB in the beginning and 172.0 MB in the end (delta: -14.5 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2019-10-02 17:34:05,649 INFO L168 Benchmark]: TraceAbstraction took 3396.36 ms. Allocated memory was 227.5 MB in the beginning and 306.7 MB in the end (delta: 79.2 MB). Free memory was 172.0 MB in the beginning and 216.1 MB in the end (delta: -44.1 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. [2019-10-02 17:34:05,654 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 917.48 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 85.8 MB in the beginning and 162.5 MB in the end (delta: -76.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.43 ms. Allocated memory is still 202.9 MB. Free memory was 162.5 MB in the beginning and 157.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1201.89 ms. Allocated memory was 202.9 MB in the beginning and 227.5 MB in the end (delta: 24.6 MB). Free memory was 157.5 MB in the beginning and 172.0 MB in the end (delta: -14.5 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3396.36 ms. Allocated memory was 227.5 MB in the beginning and 306.7 MB in the end (delta: 79.2 MB). Free memory was 172.0 MB in the beginning and 216.1 MB in the end (delta: -44.1 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 565]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 236 locations, 1 error locations. SAFE Result, 3.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 386 SDtfs, 556 SDslu, 83 SDs, 0 SdLazy, 1176 SolverSat, 285 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 447 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 444 ConstructedInterpolants, 0 QuantifiedInterpolants, 180000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...