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/data_structures_set_multi_proc_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:26:47,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:26:47,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:26:47,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 05:26:47,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:26:47,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:26:47,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:26:47,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:26:47,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:26:47,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:26:47,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:26:47,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:26:47,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:26:47,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:26:47,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:26:47,211 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 05:26:47,225 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:26:47,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:26:47,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:26:47,226 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:26:47,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:26:47,227 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:26:47,227 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:26:47,227 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:26:47,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:26:47,228 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:26:47,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:26:47,229 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:26:47,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:26:47,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:26:47,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:26:47,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:26:47,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:26:47,230 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:26:47,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:26:47,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:26:47,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:26:47,231 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:26:47,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:26:47,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:26:47,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:26:47,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:26:47,232 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:26:47,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:26:47,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:26:47,232 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:26:47,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:26:47,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:26:47,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:26:47,286 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:26:47,287 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:26:47,288 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_ground-2.i [2019-09-09 05:26:47,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdfc5fa5a/33bbca49bb1b4b0d9aeeef90fdf67987/FLAGc5b080f91 [2019-09-09 05:26:47,796 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:26:47,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_ground-2.i [2019-09-09 05:26:47,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdfc5fa5a/33bbca49bb1b4b0d9aeeef90fdf67987/FLAGc5b080f91 [2019-09-09 05:26:48,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdfc5fa5a/33bbca49bb1b4b0d9aeeef90fdf67987 [2019-09-09 05:26:48,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:26:48,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:26:48,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:26:48,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:26:48,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:26:48,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:26:48" (1/1) ... [2019-09-09 05:26:48,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ff9303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48, skipping insertion in model container [2019-09-09 05:26:48,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:26:48" (1/1) ... [2019-09-09 05:26:48,221 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:26:48,242 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:26:48,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:26:48,425 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:26:48,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:26:48,469 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:26:48,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48 WrapperNode [2019-09-09 05:26:48,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:26:48,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:26:48,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:26:48,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:26:48,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48" (1/1) ... [2019-09-09 05:26:48,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48" (1/1) ... [2019-09-09 05:26:48,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48" (1/1) ... [2019-09-09 05:26:48,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48" (1/1) ... [2019-09-09 05:26:48,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48" (1/1) ... [2019-09-09 05:26:48,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48" (1/1) ... [2019-09-09 05:26:48,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48" (1/1) ... [2019-09-09 05:26:48,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:26:48,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:26:48,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:26:48,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:26:48,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48" (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 05:26:48,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:26:48,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:26:48,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:26:48,647 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2019-09-09 05:26:48,648 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2019-09-09 05:26:48,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:26:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:26:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:26:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:26:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2019-09-09 05:26:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:26:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2019-09-09 05:26:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:26:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:26:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:26:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:26:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:26:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:26:49,027 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:26:49,028 INFO L283 CfgBuilder]: Removed 8 assume(true) statements. [2019-09-09 05:26:49,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:26:49 BoogieIcfgContainer [2019-09-09 05:26:49,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:26:49,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:26:49,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:26:49,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:26:49,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:26:48" (1/3) ... [2019-09-09 05:26:49,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8fee70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:26:49, skipping insertion in model container [2019-09-09 05:26:49,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:48" (2/3) ... [2019-09-09 05:26:49,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8fee70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:26:49, skipping insertion in model container [2019-09-09 05:26:49,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:26:49" (3/3) ... [2019-09-09 05:26:49,036 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-2.i [2019-09-09 05:26:49,045 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:26:49,052 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:26:49,068 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:26:49,093 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:26:49,093 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:26:49,093 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:26:49,093 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:26:49,093 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:26:49,094 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:26:49,094 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:26:49,094 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:26:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-09-09 05:26:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-09 05:26:49,119 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:26:49,120 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:26:49,122 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:26:49,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:26:49,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1780536170, now seen corresponding path program 1 times [2019-09-09 05:26:49,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:26:49,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:26:49,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:26:49,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:26:49,169 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:26:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:26:49,270 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 05:26:49,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:26:49,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:26:49,272 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:26:49,277 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:26:49,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:26:49,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:26:49,295 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2019-09-09 05:26:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:26:49,385 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2019-09-09 05:26:49,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:26:49,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-09 05:26:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:26:49,397 INFO L225 Difference]: With dead ends: 83 [2019-09-09 05:26:49,398 INFO L226 Difference]: Without dead ends: 75 [2019-09-09 05:26:49,400 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 05:26:49,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-09-09 05:26:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 50. [2019-09-09 05:26:49,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-09-09 05:26:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2019-09-09 05:26:49,453 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 14 [2019-09-09 05:26:49,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:26:49,453 INFO L475 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2019-09-09 05:26:49,454 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:26:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2019-09-09 05:26:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-09 05:26:49,456 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:26:49,456 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:26:49,457 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:26:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:26:49,458 INFO L82 PathProgramCache]: Analyzing trace with hash 2111973388, now seen corresponding path program 1 times [2019-09-09 05:26:49,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:26:49,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:26:49,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:26:49,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:26:49,462 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:26:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:26:49,559 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 05:26:49,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:26:49,563 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:26:49,564 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-09-09 05:26:49,566 INFO L207 CegarAbsIntRunner]: [20], [21], [27], [33], [35], [37], [41], [49], [57], [136], [139], [141], [147], [148], [149], [151] [2019-09-09 05:26:49,600 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:26:49,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:26:49,661 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:26:49,663 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 21 variables. [2019-09-09 05:26:49,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:26:49,667 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:26:49,696 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:26:49,696 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:26:49,698 INFO L420 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2019-09-09 05:26:49,698 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:26:49,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:26:49,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-09 05:26:49,699 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:26:49,700 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:26:49,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:26:49,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:26:49,701 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 2 states. [2019-09-09 05:26:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:26:49,702 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:26:49,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:26:49,703 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-09-09 05:26:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:26:49,703 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:26:49,703 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:26:49,704 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 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 05:26:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:26:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:26:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:26:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:26:49,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-09 05:26:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:26:49,705 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:26:49,706 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:26:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:26:49,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:26:49,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:26:49 BoogieIcfgContainer [2019-09-09 05:26:49,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:26:49,716 INFO L168 Benchmark]: Toolchain (without parser) took 1509.85 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 90.9 MB in the beginning and 117.6 MB in the end (delta: -26.7 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. [2019-09-09 05:26:49,717 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 134.7 MB. Free memory is still 108.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-09 05:26:49,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.41 ms. Allocated memory is still 134.7 MB. Free memory was 90.9 MB in the beginning and 79.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:26:49,719 INFO L168 Benchmark]: Boogie Preprocessor took 126.41 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 79.7 MB in the beginning and 175.8 MB in the end (delta: -96.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-09 05:26:49,720 INFO L168 Benchmark]: RCFGBuilder took 431.98 ms. Allocated memory is still 200.8 MB. Free memory was 175.8 MB in the beginning and 154.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-09-09 05:26:49,721 INFO L168 Benchmark]: TraceAbstraction took 684.40 ms. Allocated memory is still 200.8 MB. Free memory was 154.9 MB in the beginning and 117.6 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2019-09-09 05:26:49,725 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 134.7 MB. Free memory is still 108.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.41 ms. Allocated memory is still 134.7 MB. Free memory was 90.9 MB in the beginning and 79.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.41 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 79.7 MB in the beginning and 175.8 MB in the end (delta: -96.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 431.98 ms. Allocated memory is still 200.8 MB. Free memory was 175.8 MB in the beginning and 154.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 684.40 ms. Allocated memory is still 200.8 MB. Free memory was 154.9 MB in the beginning and 117.6 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 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 6 procedures, 54 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 SDtfs, 27 SDslu, 50 SDs, 0 SdLazy, 21 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 0.9166666666666666 AbsIntWeakeningRatio, 0.9333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 0.4 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 25 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 510 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 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...