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/standard_init8_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:04,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:04,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:04,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:30:04,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:04,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:04,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:04,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:04,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:04,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:04,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:04,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:04,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:04,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:04,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:04,210 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 [2019-10-02 16:30:04,226 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:04,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:04,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:04,227 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:04,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:04,228 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:04,228 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:04,228 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:04,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:04,229 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:04,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:04,230 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:04,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:04,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:04,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:04,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:04,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:04,231 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:04,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:04,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:04,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:04,232 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:04,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:04,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:04,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:04,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:04,233 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:04,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:04,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:04,234 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:04,262 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:04,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:04,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:04,283 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:04,284 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:04,285 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2019-10-02 16:30:04,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be57d679c/ccb53ed10bb54581bbd6f538dc2f83ab/FLAGfb6be3b91 [2019-10-02 16:30:04,837 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:04,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2019-10-02 16:30:04,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be57d679c/ccb53ed10bb54581bbd6f538dc2f83ab/FLAGfb6be3b91 [2019-10-02 16:30:05,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be57d679c/ccb53ed10bb54581bbd6f538dc2f83ab [2019-10-02 16:30:05,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:05,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:05,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:05,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:05,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:05,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:05" (1/1) ... [2019-10-02 16:30:05,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32777701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05, skipping insertion in model container [2019-10-02 16:30:05,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:05" (1/1) ... [2019-10-02 16:30:05,264 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:05,284 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:05,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:05,541 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:05,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:05,670 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:05,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05 WrapperNode [2019-10-02 16:30:05,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:05,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:05,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:05,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:05,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05" (1/1) ... [2019-10-02 16:30:05,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05" (1/1) ... [2019-10-02 16:30:05,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05" (1/1) ... [2019-10-02 16:30:05,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05" (1/1) ... [2019-10-02 16:30:05,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05" (1/1) ... [2019-10-02 16:30:05,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05" (1/1) ... [2019-10-02 16:30:05,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05" (1/1) ... [2019-10-02 16:30:05,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:05,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:05,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:05,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:05,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05" (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 [2019-10-02 16:30:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:06,047 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:06,047 INFO L283 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-02 16:30:06,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:06 BoogieIcfgContainer [2019-10-02 16:30:06,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:06,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:06,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:06,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:06,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:05" (1/3) ... [2019-10-02 16:30:06,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eb25e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:06, skipping insertion in model container [2019-10-02 16:30:06,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:05" (2/3) ... [2019-10-02 16:30:06,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eb25e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:06, skipping insertion in model container [2019-10-02 16:30:06,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:06" (3/3) ... [2019-10-02 16:30:06,062 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-2.i [2019-10-02 16:30:06,074 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:06,081 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:06,123 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:06,146 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:06,147 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:06,147 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:06,147 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:06,147 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:06,147 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:06,148 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:06,148 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-10-02 16:30:06,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-02 16:30:06,180 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:06,181 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:06,183 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:06,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1916738342, now seen corresponding path program 1 times [2019-10-02 16:30:06,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:06,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:06,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:06,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:06,235 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:06,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:06,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:06,319 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:06,324 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:06,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:06,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:06,337 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-10-02 16:30:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:06,353 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-10-02 16:30:06,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:06,354 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-10-02 16:30:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:06,362 INFO L225 Difference]: With dead ends: 37 [2019-10-02 16:30:06,363 INFO L226 Difference]: Without dead ends: 32 [2019-10-02 16:30:06,364 INFO L640 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 [2019-10-02 16:30:06,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-02 16:30:06,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-10-02 16:30:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-02 16:30:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2019-10-02 16:30:06,399 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 27 [2019-10-02 16:30:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:06,400 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2019-10-02 16:30:06,400 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:06,400 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2019-10-02 16:30:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-02 16:30:06,401 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:06,402 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:06,402 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:06,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:06,403 INFO L82 PathProgramCache]: Analyzing trace with hash -330794466, now seen corresponding path program 1 times [2019-10-02 16:30:06,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:06,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:06,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:06,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:06,405 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:06,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:06,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:06,471 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:06,473 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:06,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:06,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:06,474 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 3 states. [2019-10-02 16:30:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:06,591 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2019-10-02 16:30:06,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:06,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-02 16:30:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:06,593 INFO L225 Difference]: With dead ends: 40 [2019-10-02 16:30:06,593 INFO L226 Difference]: Without dead ends: 40 [2019-10-02 16:30:06,594 INFO L640 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 [2019-10-02 16:30:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-02 16:30:06,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-02 16:30:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-02 16:30:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-10-02 16:30:06,602 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2019-10-02 16:30:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:06,603 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-10-02 16:30:06,603 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:06,604 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-10-02 16:30:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-02 16:30:06,606 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:06,607 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:06,607 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:06,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:06,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1167956326, now seen corresponding path program 1 times [2019-10-02 16:30:06,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:06,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:06,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:06,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:06,613 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-02 16:30:06,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:06,727 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:06,728 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2019-10-02 16:30:06,730 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [18], [25], [27], [31], [38], [40], [44], [51], [53], [57], [64], [66], [70], [77], [79], [83], [90], [92], [96], [103], [105], [109], [117], [127], [130], [132], [138], [139], [140], [142] [2019-10-02 16:30:06,764 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:06,764 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:06,838 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:06,840 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 17 variables. [2019-10-02 16:30:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:06,843 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:06,884 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:30:06,884 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:06,887 INFO L420 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2019-10-02 16:30:06,887 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:06,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:06,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:30:06,889 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:06,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:06,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:06,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:06,890 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 2 states. [2019-10-02 16:30:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:06,891 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:30:06,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:06,891 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2019-10-02 16:30:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:06,892 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:30:06,892 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:06,892 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:06,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-10-02 16:30:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:06,894 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:06,894 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:06,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:06,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:06 BoogieIcfgContainer [2019-10-02 16:30:06,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:06,902 INFO L168 Benchmark]: Toolchain (without parser) took 1657.30 ms. Allocated memory was 129.5 MB in the beginning and 197.7 MB in the end (delta: 68.2 MB). Free memory was 85.4 MB in the beginning and 106.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,903 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 129.5 MB. Free memory was 103.6 MB in the beginning and 103.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.31 ms. Allocated memory was 129.5 MB in the beginning and 197.7 MB in the end (delta: 68.2 MB). Free memory was 85.2 MB in the beginning and 174.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,905 INFO L168 Benchmark]: Boogie Preprocessor took 46.57 ms. Allocated memory is still 197.7 MB. Free memory was 174.3 MB in the beginning and 172.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,906 INFO L168 Benchmark]: RCFGBuilder took 327.89 ms. Allocated memory is still 197.7 MB. Free memory was 171.9 MB in the beginning and 154.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,907 INFO L168 Benchmark]: TraceAbstraction took 848.48 ms. Allocated memory is still 197.7 MB. Free memory was 154.5 MB in the beginning and 106.7 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:06,911 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 129.5 MB. Free memory was 103.6 MB in the beginning and 103.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 426.31 ms. Allocated memory was 129.5 MB in the beginning and 197.7 MB in the end (delta: 68.2 MB). Free memory was 85.2 MB in the beginning and 174.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.57 ms. Allocated memory is still 197.7 MB. Free memory was 174.3 MB in the beginning and 172.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 327.89 ms. Allocated memory is still 197.7 MB. Free memory was 171.9 MB in the beginning and 154.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 848.48 ms. Allocated memory is still 197.7 MB. Free memory was 154.5 MB in the beginning and 106.7 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 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, 37 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 82 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 24 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, 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, 0.9779411764705882 AbsIntWeakeningRatio, 0.47058823529411764 AbsIntAvgWeakeningVarsNumRemoved, 0.17647058823529413 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, 0.1s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2696 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 7/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...