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/loops/insertion_sort-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:45:48,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:45:48,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:45:48,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-05 12:45:48,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 12:45:48,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 12:45:48,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 12:45:48,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 12:45:48,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 12:45:48,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 12:45:48,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 12:45:48,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 12:45:48,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 12:45:48,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 12:45:48,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 12:45:48,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 12:45:48,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 12:45:48,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 12:45:48,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 12:45:48,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 12:45:48,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 12:45:48,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 12:45:48,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 12:45:48,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 12:45:48,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 12:45:48,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 12:45:48,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 12:45:48,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 12:45:48,368 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 [2019-09-05 12:45:48,395 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:45:48,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:45:48,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 12:45:48,396 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 12:45:48,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 12:45:48,397 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 12:45:48,397 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 12:45:48,398 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 12:45:48,398 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 12:45:48,398 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 12:45:48,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:45:48,400 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:45:48,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:45:48,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:45:48,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:45:48,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:45:48,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:45:48,401 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:45:48,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:45:48,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:45:48,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:45:48,402 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 12:45:48,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:45:48,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:45:48,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:45:48,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:45:48,404 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 12:45:48,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:45:48,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:45:48,404 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 12:45:48,454 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:45:48,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:45:48,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:45:48,471 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:45:48,471 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:45:48,472 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/insertion_sort-2.c [2019-09-05 12:45:48,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a221d3b3/9637f1d895ab45478c76a4785c5bf757/FLAG7b1cbad2c [2019-09-05 12:45:48,936 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:45:48,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-2.c [2019-09-05 12:45:48,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a221d3b3/9637f1d895ab45478c76a4785c5bf757/FLAG7b1cbad2c [2019-09-05 12:45:49,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a221d3b3/9637f1d895ab45478c76a4785c5bf757 [2019-09-05 12:45:49,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:45:49,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:45:49,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:45:49,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:45:49,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:45:49,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:45:49" (1/1) ... [2019-09-05 12:45:49,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227ea5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49, skipping insertion in model container [2019-09-05 12:45:49,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:45:49" (1/1) ... [2019-09-05 12:45:49,317 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:45:49,341 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:45:49,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:45:49,579 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:45:49,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:45:49,639 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:45:49,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49 WrapperNode [2019-09-05 12:45:49,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:45:49,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:45:49,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:45:49,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:45:49,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49" (1/1) ... [2019-09-05 12:45:49,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49" (1/1) ... [2019-09-05 12:45:49,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49" (1/1) ... [2019-09-05 12:45:49,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49" (1/1) ... [2019-09-05 12:45:49,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49" (1/1) ... [2019-09-05 12:45:49,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49" (1/1) ... [2019-09-05 12:45:49,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49" (1/1) ... [2019-09-05 12:45:49,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:45:49,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:45:49,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:45:49,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:45:49,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49" (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 [2019-09-05 12:45:49,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:45:49,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:45:49,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 12:45:49,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:45:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:45:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:45:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-05 12:45:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:45:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-05 12:45:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-05 12:45:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-05 12:45:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-05 12:45:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:45:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:45:50,128 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:45:50,129 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-05 12:45:50,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:45:50 BoogieIcfgContainer [2019-09-05 12:45:50,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:45:50,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:45:50,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:45:50,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:45:50,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:45:49" (1/3) ... [2019-09-05 12:45:50,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a9cb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:45:50, skipping insertion in model container [2019-09-05 12:45:50,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:49" (2/3) ... [2019-09-05 12:45:50,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a9cb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:45:50, skipping insertion in model container [2019-09-05 12:45:50,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:45:50" (3/3) ... [2019-09-05 12:45:50,138 INFO L109 eAbstractionObserver]: Analyzing ICFG insertion_sort-2.c [2019-09-05 12:45:50,161 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:45:50,182 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:45:50,224 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:45:50,254 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:45:50,254 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 12:45:50,255 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:45:50,255 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:45:50,255 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:45:50,255 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:45:50,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:45:50,255 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:45:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-05 12:45:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-05 12:45:50,279 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:45:50,280 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:45:50,281 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:45:50,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:45:50,286 INFO L82 PathProgramCache]: Analyzing trace with hash 637757472, now seen corresponding path program 1 times [2019-09-05 12:45:50,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:45:50,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:50,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:45:50,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:50,326 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:45:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:45:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:45:50,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:45:50,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 12:45:50,423 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:45:50,427 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:45:50,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:45:50,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:45:50,439 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-09-05 12:45:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:45:50,453 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-09-05 12:45:50,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:45:50,455 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-05 12:45:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:45:50,464 INFO L225 Difference]: With dead ends: 28 [2019-09-05 12:45:50,464 INFO L226 Difference]: Without dead ends: 23 [2019-09-05 12:45:50,466 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 [2019-09-05 12:45:50,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-05 12:45:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-05 12:45:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-05 12:45:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-09-05 12:45:50,498 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2019-09-05 12:45:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:45:50,499 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-09-05 12:45:50,499 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:45:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-09-05 12:45:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-05 12:45:50,500 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:45:50,500 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:45:50,501 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:45:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:45:50,501 INFO L82 PathProgramCache]: Analyzing trace with hash -962501754, now seen corresponding path program 1 times [2019-09-05 12:45:50,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:45:50,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:50,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:45:50,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:50,503 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:45:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:45:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:45:50,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:45:50,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 12:45:50,691 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:45:50,693 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 12:45:50,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 12:45:50,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-05 12:45:50,694 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2019-09-05 12:45:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:45:50,755 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-09-05 12:45:50,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 12:45:50,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-05 12:45:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:45:50,757 INFO L225 Difference]: With dead ends: 31 [2019-09-05 12:45:50,758 INFO L226 Difference]: Without dead ends: 29 [2019-09-05 12:45:50,759 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-05 12:45:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-05 12:45:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-09-05 12:45:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-05 12:45:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-09-05 12:45:50,764 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2019-09-05 12:45:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:45:50,765 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-09-05 12:45:50,765 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 12:45:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-09-05 12:45:50,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-05 12:45:50,766 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:45:50,766 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:45:50,766 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:45:50,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:45:50,767 INFO L82 PathProgramCache]: Analyzing trace with hash 513665657, now seen corresponding path program 1 times [2019-09-05 12:45:50,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:45:50,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:50,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:45:50,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:50,769 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:45:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:45:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:45:51,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 12:45:51,361 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-05 12:45:51,361 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-05 12:45:51,363 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [18], [21], [27], [33], [35], [39], [47], [57], [60], [62], [68], [69], [70], [72] [2019-09-05 12:45:51,410 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 12:45:51,410 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 12:45:51,498 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-05 12:45:51,499 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 16 root evaluator evaluations with a maximum evaluation depth of 0. Performed 16 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-05 12:45:51,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:45:51,503 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-05 12:45:51,536 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-05 12:45:51,537 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-05 12:45:51,538 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-05 12:45:51,539 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-05 12:45:51,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-05 12:45:51,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 12 [2019-09-05 12:45:51,554 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:45:51,555 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:45:51,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:45:51,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:45:51,556 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 2 states. [2019-09-05 12:45:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:45:51,556 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-05 12:45:51,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:45:51,557 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-05 12:45:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:45:51,557 INFO L225 Difference]: With dead ends: 6 [2019-09-05 12:45:51,557 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 12:45:51,558 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:45:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 12:45:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 12:45:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 12:45:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 12:45:51,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-09-05 12:45:51,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:45:51,559 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 12:45:51,559 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:45:51,559 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 12:45:51,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 12:45:51,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:45:51 BoogieIcfgContainer [2019-09-05 12:45:51,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:45:51,567 INFO L168 Benchmark]: Toolchain (without parser) took 2271.61 ms. Allocated memory was 135.3 MB in the beginning and 222.3 MB in the end (delta: 87.0 MB). Free memory was 87.0 MB in the beginning and 189.0 MB in the end (delta: -102.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-05 12:45:51,568 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:45:51,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.80 ms. Allocated memory is still 135.3 MB. Free memory was 86.8 MB in the beginning and 76.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-09-05 12:45:51,570 INFO L168 Benchmark]: Boogie Preprocessor took 181.02 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 76.8 MB in the beginning and 176.5 MB in the end (delta: -99.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-09-05 12:45:51,571 INFO L168 Benchmark]: RCFGBuilder took 307.35 ms. Allocated memory is still 199.8 MB. Free memory was 176.5 MB in the beginning and 161.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-09-05 12:45:51,572 INFO L168 Benchmark]: TraceAbstraction took 1433.54 ms. Allocated memory was 199.8 MB in the beginning and 222.3 MB in the end (delta: 22.5 MB). Free memory was 161.0 MB in the beginning and 189.0 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-05 12:45:51,581 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.80 ms. Allocated memory is still 135.3 MB. Free memory was 86.8 MB in the beginning and 76.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 181.02 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 76.8 MB in the beginning and 176.5 MB in the end (delta: -99.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 307.35 ms. Allocated memory is still 199.8 MB. Free memory was 176.5 MB in the beginning and 161.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1433.54 ms. Allocated memory was 199.8 MB in the beginning and 222.3 MB in the end (delta: 22.5 MB). Free memory was 161.0 MB in the beginning and 189.0 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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, 28 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 10 SDslu, 43 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9027777777777778 AbsIntWeakeningRatio, 1.1666666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.3333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 4554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...