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/array-examples/sanfoundry_10_ground.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:27:08,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:27:08,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:27:08,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:27:08,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:27:08,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:27:08,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:27:08,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:27:08,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:27:08,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:27:08,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:27:08,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:27:08,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:27:08,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:27:08,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:27:08,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:27:08,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:27:08,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:27:08,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:27:08,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:27:08,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:27:08,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:27:08,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:27:08,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:27:08,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 05:27:08,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:27:08,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:27:08,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:27:08,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:27:08,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:27:08,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:27:08,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:27:08,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:27:08,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:27:08,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:27:08,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:27:08,535 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 05:27:08,549 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:27:08,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:27:08,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:27:08,550 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:27:08,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:27:08,551 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:27:08,551 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:27:08,551 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:27:08,552 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:27:08,552 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:27:08,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:27:08,553 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:27:08,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:27:08,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:27:08,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:27:08,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:27:08,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:27:08,554 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:27:08,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:27:08,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:27:08,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:27:08,555 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:27:08,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:27:08,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:27:08,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:27:08,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:27:08,556 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:27:08,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:27:08,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:27:08,556 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:27:08,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:27:08,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:27:08,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:27:08,600 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:27:08,600 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:27:08,601 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_10_ground.c [2019-09-09 05:27:08,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e3f3e8f/e92aea552381469cb5a21f8cc6313c63/FLAGfec339720 [2019-09-09 05:27:09,081 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:27:09,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_10_ground.c [2019-09-09 05:27:09,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e3f3e8f/e92aea552381469cb5a21f8cc6313c63/FLAGfec339720 [2019-09-09 05:27:09,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e3f3e8f/e92aea552381469cb5a21f8cc6313c63 [2019-09-09 05:27:09,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:27:09,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:27:09,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:27:09,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:27:09,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:27:09,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:27:09" (1/1) ... [2019-09-09 05:27:09,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abe9483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09, skipping insertion in model container [2019-09-09 05:27:09,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:27:09" (1/1) ... [2019-09-09 05:27:09,510 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:27:09,530 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:27:09,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:27:09,725 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:27:09,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:27:09,766 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:27:09,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09 WrapperNode [2019-09-09 05:27:09,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:27:09,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:27:09,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:27:09,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:27:09,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09" (1/1) ... [2019-09-09 05:27:09,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09" (1/1) ... [2019-09-09 05:27:09,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09" (1/1) ... [2019-09-09 05:27:09,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09" (1/1) ... [2019-09-09 05:27:09,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09" (1/1) ... [2019-09-09 05:27:09,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09" (1/1) ... [2019-09-09 05:27:09,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09" (1/1) ... [2019-09-09 05:27:09,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:27:09,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:27:09,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:27:09,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:27:09,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09" (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 05:27:09,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:27:09,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:27:09,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:27:09,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:27:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:27:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:27:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:27:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:27:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:27:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:27:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:27:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:27:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:27:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:27:10,228 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:27:10,228 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-09 05:27:10,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:27:10 BoogieIcfgContainer [2019-09-09 05:27:10,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:27:10,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:27:10,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:27:10,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:27:10,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:27:09" (1/3) ... [2019-09-09 05:27:10,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a322f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:27:10, skipping insertion in model container [2019-09-09 05:27:10,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:09" (2/3) ... [2019-09-09 05:27:10,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a322f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:27:10, skipping insertion in model container [2019-09-09 05:27:10,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:27:10" (3/3) ... [2019-09-09 05:27:10,236 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_10_ground.c [2019-09-09 05:27:10,243 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:27:10,250 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:27:10,267 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:27:10,293 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:27:10,293 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:27:10,293 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:27:10,293 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:27:10,294 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:27:10,294 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:27:10,294 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:27:10,294 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:27:10,309 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-09-09 05:27:10,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-09 05:27:10,318 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:27:10,318 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:27:10,320 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:27:10,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:10,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1746448729, now seen corresponding path program 1 times [2019-09-09 05:27:10,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:27:10,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:10,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:27:10,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:10,375 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:27:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:27:10,461 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 05:27:10,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:27:10,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:27:10,463 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:27:10,467 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:27:10,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:27:10,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:27:10,481 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-09-09 05:27:10,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:27:10,500 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2019-09-09 05:27:10,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:27:10,501 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-09-09 05:27:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:27:10,511 INFO L225 Difference]: With dead ends: 31 [2019-09-09 05:27:10,511 INFO L226 Difference]: Without dead ends: 26 [2019-09-09 05:27:10,513 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 [2019-09-09 05:27:10,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-09 05:27:10,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-09 05:27:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-09 05:27:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-09-09 05:27:10,553 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 16 [2019-09-09 05:27:10,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:27:10,554 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-09-09 05:27:10,554 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:27:10,554 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-09-09 05:27:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-09 05:27:10,555 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:27:10,555 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:27:10,556 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:27:10,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:10,556 INFO L82 PathProgramCache]: Analyzing trace with hash 934485258, now seen corresponding path program 1 times [2019-09-09 05:27:10,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:27:10,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:10,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:27:10,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:10,558 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:27:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:27:10,631 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 05:27:10,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:27:10,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:27:10,632 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:27:10,633 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:27:10,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:27:10,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:27:10,634 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 3 states. [2019-09-09 05:27:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:27:10,719 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-09-09 05:27:10,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:27:10,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-09 05:27:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:27:10,721 INFO L225 Difference]: With dead ends: 30 [2019-09-09 05:27:10,721 INFO L226 Difference]: Without dead ends: 28 [2019-09-09 05:27:10,722 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 05:27:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-09 05:27:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-09-09 05:27:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-09 05:27:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-09-09 05:27:10,727 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2019-09-09 05:27:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:27:10,727 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-09-09 05:27:10,728 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:27:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-09-09 05:27:10,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-09 05:27:10,729 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:27:10,729 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] [2019-09-09 05:27:10,730 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:27:10,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:10,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1806235348, now seen corresponding path program 1 times [2019-09-09 05:27:10,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:27:10,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:10,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:27:10,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:10,733 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:27:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:27:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:27:10,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:27:10,874 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:27:10,875 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2019-09-09 05:27:10,877 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [19], [25], [27], [30], [34], [40], [46], [59], [67], [80], [83], [85], [91], [92], [93], [95] [2019-09-09 05:27:10,912 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:27:10,913 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:27:10,987 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:27:10,989 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 2. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 24 variables. [2019-09-09 05:27:10,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:10,993 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:27:11,030 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:27:11,030 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:27:11,032 INFO L420 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-09-09 05:27:11,032 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:27:11,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:27:11,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-09 05:27:11,034 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:27:11,034 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:27:11,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:27:11,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:27:11,035 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 2 states. [2019-09-09 05:27:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:27:11,036 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:27:11,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:27:11,036 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-09-09 05:27:11,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:27:11,037 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:27:11,037 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:27:11,038 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:27:11,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:27:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:27:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:27:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:27:11,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-09-09 05:27:11,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:27:11,039 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:27:11,039 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:27:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:27:11,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:27:11,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:27:11 BoogieIcfgContainer [2019-09-09 05:27:11,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:27:11,048 INFO L168 Benchmark]: Toolchain (without parser) took 1553.87 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 90.4 MB in the beginning and 119.0 MB in the end (delta: -28.6 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:11,049 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:27:11,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.12 ms. Allocated memory is still 134.7 MB. Free memory was 90.2 MB in the beginning and 80.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:11,051 INFO L168 Benchmark]: Boogie Preprocessor took 122.11 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 80.1 MB in the beginning and 177.1 MB in the end (delta: -97.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:11,052 INFO L168 Benchmark]: RCFGBuilder took 339.70 ms. Allocated memory is still 201.3 MB. Free memory was 177.1 MB in the beginning and 161.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:11,053 INFO L168 Benchmark]: TraceAbstraction took 814.82 ms. Allocated memory is still 201.3 MB. Free memory was 160.7 MB in the beginning and 119.0 MB in the end (delta: 41.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:11,057 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.12 ms. Allocated memory is still 134.7 MB. Free memory was 90.2 MB in the beginning and 80.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.11 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 80.1 MB in the beginning and 177.1 MB in the end (delta: -97.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.70 ms. Allocated memory is still 201.3 MB. Free memory was 177.1 MB in the beginning and 161.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 814.82 ms. Allocated memory is still 201.3 MB. Free memory was 160.7 MB in the beginning and 119.0 MB in the end (delta: 41.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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, 31 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 70 SDtfs, 5 SDslu, 19 SDs, 0 SdLazy, 7 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 0.9078947368421053 AbsIntWeakeningRatio, 1.0 AbsIntAvgWeakeningVarsNumRemoved, 0.3157894736842105 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1721 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...