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/loop-industry-pattern/mod3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:59:40,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:59:40,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:59:40,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:59:40,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:59:40,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:59:40,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:59:40,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:59:40,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:59:40,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:59:40,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:59:40,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:59:40,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:59:40,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:59:40,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:59:40,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:59:40,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:59:40,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:59:40,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:59:40,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:59:40,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:59:40,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:59:40,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:59:40,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:59:40,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:59:40,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:59:40,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:59:40,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:59:40,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:59:40,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:59:40,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:59:40,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:59:40,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:59:40,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:59:40,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:59:40,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:59:40,253 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 [2019-09-03 20:59:40,275 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:59:40,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:59:40,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:59:40,277 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:59:40,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:59:40,278 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:59:40,278 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:59:40,278 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:59:40,279 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:59:40,279 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:59:40,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:59:40,280 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:59:40,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:59:40,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:59:40,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:59:40,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:59:40,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:59:40,281 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:59:40,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:59:40,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:59:40,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:59:40,282 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:59:40,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:59:40,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:59:40,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:59:40,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:59:40,285 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:59:40,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:59:40,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:59:40,286 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:59:40,335 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:59:40,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:59:40,352 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:59:40,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:59:40,356 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:59:40,357 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c [2019-09-03 20:59:40,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa3ebf98/f031527c011f4a548e1e2103ce3c1102/FLAG28635ce72 [2019-09-03 20:59:40,899 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:59:40,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c [2019-09-03 20:59:40,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa3ebf98/f031527c011f4a548e1e2103ce3c1102/FLAG28635ce72 [2019-09-03 20:59:41,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa3ebf98/f031527c011f4a548e1e2103ce3c1102 [2019-09-03 20:59:41,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:59:41,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:59:41,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:59:41,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:59:41,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:59:41,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:59:41" (1/1) ... [2019-09-03 20:59:41,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e607a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41, skipping insertion in model container [2019-09-03 20:59:41,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:59:41" (1/1) ... [2019-09-03 20:59:41,303 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:59:41,319 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:59:41,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:59:41,494 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:59:41,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:59:41,523 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:59:41,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41 WrapperNode [2019-09-03 20:59:41,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:59:41,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:59:41,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:59:41,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:59:41,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41" (1/1) ... [2019-09-03 20:59:41,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41" (1/1) ... [2019-09-03 20:59:41,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41" (1/1) ... [2019-09-03 20:59:41,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41" (1/1) ... [2019-09-03 20:59:41,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41" (1/1) ... [2019-09-03 20:59:41,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41" (1/1) ... [2019-09-03 20:59:41,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41" (1/1) ... [2019-09-03 20:59:41,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:59:41,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:59:41,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:59:41,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:59:41,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41" (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 [2019-09-03 20:59:41,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:59:41,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:59:41,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:59:41,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:59:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:59:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:59:41,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:59:41,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:59:41,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:59:41,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:59:41,896 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:59:41,896 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 20:59:41,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:59:41 BoogieIcfgContainer [2019-09-03 20:59:41,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:59:41,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:59:41,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:59:41,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:59:41,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:59:41" (1/3) ... [2019-09-03 20:59:41,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b54f469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:59:41, skipping insertion in model container [2019-09-03 20:59:41,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:41" (2/3) ... [2019-09-03 20:59:41,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b54f469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:59:41, skipping insertion in model container [2019-09-03 20:59:41,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:59:41" (3/3) ... [2019-09-03 20:59:41,906 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c [2019-09-03 20:59:41,917 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:59:41,934 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:59:41,950 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:59:41,981 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:59:41,981 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:59:41,982 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:59:41,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:59:41,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:59:41,983 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:59:41,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:59:41,983 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:59:41,998 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-03 20:59:42,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 20:59:42,007 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:59:42,008 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:59:42,010 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:59:42,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:59:42,014 INFO L82 PathProgramCache]: Analyzing trace with hash 271538127, now seen corresponding path program 1 times [2019-09-03 20:59:42,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:59:42,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:42,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:59:42,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:42,063 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:59:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:59:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:59:42,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:59:42,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:59:42,119 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:59:42,123 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:59:42,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:59:42,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:59:42,136 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-09-03 20:59:42,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:59:42,149 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-09-03 20:59:42,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:59:42,150 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-03 20:59:42,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:59:42,160 INFO L225 Difference]: With dead ends: 23 [2019-09-03 20:59:42,160 INFO L226 Difference]: Without dead ends: 16 [2019-09-03 20:59:42,162 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:59:42,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-03 20:59:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-03 20:59:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-03 20:59:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-09-03 20:59:42,203 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-09-03 20:59:42,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:59:42,203 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-09-03 20:59:42,203 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:59:42,204 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-09-03 20:59:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 20:59:42,204 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:59:42,205 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:59:42,205 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:59:42,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:59:42,206 INFO L82 PathProgramCache]: Analyzing trace with hash 183026044, now seen corresponding path program 1 times [2019-09-03 20:59:42,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:59:42,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:42,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:59:42,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:42,208 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:59:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:59:42,525 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2019-09-03 20:59:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:59:42,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:59:42,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 20:59:42,529 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:59:42,530 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 20:59:42,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 20:59:42,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:59:42,531 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 3 states. [2019-09-03 20:59:42,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:59:42,567 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2019-09-03 20:59:42,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 20:59:42,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-09-03 20:59:42,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:59:42,569 INFO L225 Difference]: With dead ends: 22 [2019-09-03 20:59:42,569 INFO L226 Difference]: Without dead ends: 21 [2019-09-03 20:59:42,570 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:59:42,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-03 20:59:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-09-03 20:59:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-03 20:59:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-09-03 20:59:42,575 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-09-03 20:59:42,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:59:42,576 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-09-03 20:59:42,576 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 20:59:42,576 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-09-03 20:59:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-03 20:59:42,577 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:59:42,577 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:59:42,577 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:59:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:59:42,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1587594336, now seen corresponding path program 1 times [2019-09-03 20:59:42,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:59:42,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:42,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:59:42,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:42,579 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:59:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:59:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:59:42,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:59:42,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:59:42,802 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:59:42,803 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:59:42,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:59:42,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:59:42,804 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2019-09-03 20:59:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:59:43,031 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2019-09-03 20:59:43,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:59:43,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-09-03 20:59:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:59:43,032 INFO L225 Difference]: With dead ends: 19 [2019-09-03 20:59:43,032 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:59:43,033 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:59:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:59:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:59:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:59:43,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:59:43,034 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-09-03 20:59:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:59:43,034 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:59:43,034 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:59:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:59:43,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:59:43,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:59:43 BoogieIcfgContainer [2019-09-03 20:59:43,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:59:43,042 INFO L168 Benchmark]: Toolchain (without parser) took 1756.22 ms. Allocated memory was 137.4 MB in the beginning and 198.2 MB in the end (delta: 60.8 MB). Free memory was 84.3 MB in the beginning and 120.2 MB in the end (delta: -35.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2019-09-03 20:59:43,043 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 137.4 MB. Free memory was 103.4 MB in the beginning and 103.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:59:43,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.64 ms. Allocated memory is still 137.4 MB. Free memory was 84.1 MB in the beginning and 74.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:59:43,045 INFO L168 Benchmark]: Boogie Preprocessor took 122.86 ms. Allocated memory was 137.4 MB in the beginning and 198.2 MB in the end (delta: 60.8 MB). Free memory was 74.7 MB in the beginning and 175.5 MB in the end (delta: -100.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:59:43,046 INFO L168 Benchmark]: RCFGBuilder took 250.39 ms. Allocated memory is still 198.2 MB. Free memory was 175.5 MB in the beginning and 164.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-09-03 20:59:43,047 INFO L168 Benchmark]: TraceAbstraction took 1140.77 ms. Allocated memory is still 198.2 MB. Free memory was 163.3 MB in the beginning and 120.2 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:59:43,050 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 137.4 MB. Free memory was 103.4 MB in the beginning and 103.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 236.64 ms. Allocated memory is still 137.4 MB. Free memory was 84.1 MB in the beginning and 74.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.86 ms. Allocated memory was 137.4 MB in the beginning and 198.2 MB in the end (delta: 60.8 MB). Free memory was 74.7 MB in the beginning and 175.5 MB in the end (delta: -100.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 250.39 ms. Allocated memory is still 198.2 MB. Free memory was 175.5 MB in the beginning and 164.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1140.77 ms. Allocated memory is still 198.2 MB. Free memory was 163.3 MB in the beginning and 120.2 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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, 23 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 7 SDslu, 55 SDs, 0 SdLazy, 24 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1773 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...