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/Problem10_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 14:09:10,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 14:09:10,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 14:09:10,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 14:09:11,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 14:09:11,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 14:09:11,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 14:09:11,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 14:09:11,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 14:09:11,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 14:09:11,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 14:09:11,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 14:09:11,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 14:09:11,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 14:09:11,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 14:09:11,031 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 14:09:11,051 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 14:09:11,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 14:09:11,052 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 14:09:11,053 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 14:09:11,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 14:09:11,054 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 14:09:11,054 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 14:09:11,054 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 14:09:11,055 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 14:09:11,055 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 14:09:11,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 14:09:11,056 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 14:09:11,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 14:09:11,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 14:09:11,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 14:09:11,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 14:09:11,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 14:09:11,057 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 14:09:11,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 14:09:11,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 14:09:11,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 14:09:11,058 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 14:09:11,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 14:09:11,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 14:09:11,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 14:09:11,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 14:09:11,060 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 14:09:11,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 14:09:11,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 14:09:11,060 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 14:09:11,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 14:09:11,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 14:09:11,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 14:09:11,144 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 14:09:11,145 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 14:09:11,146 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label09.c [2019-09-09 14:09:11,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a94ebe8/fd35a58f47434b54a2acd6300e3b6c1d/FLAG1590b68df [2019-09-09 14:09:11,906 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 14:09:11,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label09.c [2019-09-09 14:09:11,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a94ebe8/fd35a58f47434b54a2acd6300e3b6c1d/FLAG1590b68df [2019-09-09 14:09:12,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a94ebe8/fd35a58f47434b54a2acd6300e3b6c1d [2019-09-09 14:09:12,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 14:09:12,169 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 14:09:12,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 14:09:12,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 14:09:12,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 14:09:12,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:09:12" (1/1) ... [2019-09-09 14:09:12,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3469f08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:12, skipping insertion in model container [2019-09-09 14:09:12,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:09:12" (1/1) ... [2019-09-09 14:09:12,188 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 14:09:12,243 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 14:09:12,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:09:12,834 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 14:09:13,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:09:13,022 INFO L192 MainTranslator]: Completed translation [2019-09-09 14:09:13,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:13 WrapperNode [2019-09-09 14:09:13,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 14:09:13,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 14:09:13,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 14:09:13,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 14:09:13,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:13" (1/1) ... [2019-09-09 14:09:13,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:13" (1/1) ... [2019-09-09 14:09:13,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:13" (1/1) ... [2019-09-09 14:09:13,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:13" (1/1) ... [2019-09-09 14:09:13,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:13" (1/1) ... [2019-09-09 14:09:13,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:13" (1/1) ... [2019-09-09 14:09:13,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:13" (1/1) ... [2019-09-09 14:09:13,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 14:09:13,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 14:09:13,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 14:09:13,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 14:09:13,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:13" (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 14:09:13,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 14:09:13,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 14:09:13,254 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 14:09:13,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 14:09:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 14:09:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 14:09:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 14:09:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 14:09:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 14:09:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 14:09:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 14:09:14,755 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 14:09:14,755 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 14:09:14,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:09:14 BoogieIcfgContainer [2019-09-09 14:09:14,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 14:09:14,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 14:09:14,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 14:09:14,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 14:09:14,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 02:09:12" (1/3) ... [2019-09-09 14:09:14,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b9f0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:09:14, skipping insertion in model container [2019-09-09 14:09:14,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:13" (2/3) ... [2019-09-09 14:09:14,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b9f0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:09:14, skipping insertion in model container [2019-09-09 14:09:14,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:09:14" (3/3) ... [2019-09-09 14:09:14,784 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label09.c [2019-09-09 14:09:14,796 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 14:09:14,808 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 14:09:14,829 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 14:09:14,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 14:09:14,870 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 14:09:14,870 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 14:09:14,870 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 14:09:14,870 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 14:09:14,871 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 14:09:14,871 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 14:09:14,871 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 14:09:14,901 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-09-09 14:09:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-09 14:09:14,915 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:09:14,916 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, 1, 1, 1, 1, 1, 1, 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 14:09:14,919 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:09:14,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:09:14,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1499972089, now seen corresponding path program 1 times [2019-09-09 14:09:14,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:09:14,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:09:14,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:09:14,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:09:14,974 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:09:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:09:15,301 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 14:09:15,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:09:15,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 14:09:15,305 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:09:15,313 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 14:09:15,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 14:09:15,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:09:15,336 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-09-09 14:09:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:09:16,551 INFO L93 Difference]: Finished difference Result 362 states and 555 transitions. [2019-09-09 14:09:16,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 14:09:16,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2019-09-09 14:09:16,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:09:16,577 INFO L225 Difference]: With dead ends: 362 [2019-09-09 14:09:16,578 INFO L226 Difference]: Without dead ends: 294 [2019-09-09 14:09:16,580 INFO L628 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 [2019-09-09 14:09:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-09-09 14:09:16,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-09-09 14:09:16,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-09 14:09:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2019-09-09 14:09:16,718 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 62 [2019-09-09 14:09:16,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:09:16,720 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2019-09-09 14:09:16,721 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 14:09:16,721 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2019-09-09 14:09:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-09-09 14:09:16,742 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:09:16,746 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, 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] [2019-09-09 14:09:16,747 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:09:16,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:09:16,748 INFO L82 PathProgramCache]: Analyzing trace with hash -863876107, now seen corresponding path program 1 times [2019-09-09 14:09:16,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:09:16,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:09:16,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:09:16,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:09:16,752 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:09:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:09:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:09:17,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:09:17,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 14:09:17,152 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:09:17,154 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 14:09:17,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 14:09:17,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 14:09:17,156 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 4 states. [2019-09-09 14:09:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:09:18,441 INFO L93 Difference]: Finished difference Result 721 states and 984 transitions. [2019-09-09 14:09:18,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 14:09:18,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2019-09-09 14:09:18,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:09:18,447 INFO L225 Difference]: With dead ends: 721 [2019-09-09 14:09:18,447 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 14:09:18,449 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 14:09:18,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 14:09:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 14:09:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 14:09:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 14:09:18,451 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2019-09-09 14:09:18,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:09:18,454 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 14:09:18,454 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 14:09:18,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 14:09:18,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 14:09:18,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 02:09:18 BoogieIcfgContainer [2019-09-09 14:09:18,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 14:09:18,471 INFO L168 Benchmark]: Toolchain (without parser) took 6300.75 ms. Allocated memory was 133.2 MB in the beginning and 261.1 MB in the end (delta: 127.9 MB). Free memory was 86.9 MB in the beginning and 114.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 100.8 MB. Max. memory is 7.1 GB. [2019-09-09 14:09:18,472 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 14:09:18,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 853.24 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 86.7 MB in the beginning and 159.8 MB in the end (delta: -73.0 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2019-09-09 14:09:18,476 INFO L168 Benchmark]: Boogie Preprocessor took 120.50 ms. Allocated memory is still 200.3 MB. Free memory was 159.8 MB in the beginning and 155.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-09 14:09:18,478 INFO L168 Benchmark]: RCFGBuilder took 1615.79 ms. Allocated memory was 200.3 MB in the beginning and 226.5 MB in the end (delta: 26.2 MB). Free memory was 155.3 MB in the beginning and 173.1 MB in the end (delta: -17.8 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2019-09-09 14:09:18,480 INFO L168 Benchmark]: TraceAbstraction took 3705.12 ms. Allocated memory was 226.5 MB in the beginning and 261.1 MB in the end (delta: 34.6 MB). Free memory was 171.8 MB in the beginning and 114.1 MB in the end (delta: 57.6 MB). Peak memory consumption was 92.3 MB. Max. memory is 7.1 GB. [2019-09-09 14:09:18,491 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 853.24 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 86.7 MB in the beginning and 159.8 MB in the end (delta: -73.0 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.50 ms. Allocated memory is still 200.3 MB. Free memory was 159.8 MB in the beginning and 155.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1615.79 ms. Allocated memory was 200.3 MB in the beginning and 226.5 MB in the end (delta: 26.2 MB). Free memory was 155.3 MB in the beginning and 173.1 MB in the end (delta: -17.8 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3705.12 ms. Allocated memory was 226.5 MB in the beginning and 261.1 MB in the end (delta: 34.6 MB). Free memory was 171.8 MB in the beginning and 114.1 MB in the end (delta: 57.6 MB). Peak memory consumption was 92.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 172]: 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, 215 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 434 SDslu, 31 SDs, 0 SdLazy, 1127 SolverSat, 325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=294occurred in iteration=1, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 76618 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 55/55 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...