java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:31:46,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:31:46,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:31:46,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 02:31:46,249 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 [2019-10-03 02:31:46,267 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:31:46,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:31:46,267 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:31:46,268 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:31:46,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:31:46,270 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:31:46,270 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:31:46,270 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:31:46,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:31:46,271 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:31:46,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:31:46,272 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:31:46,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:31:46,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:31:46,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:31:46,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:31:46,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:31:46,273 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:31:46,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:31:46,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:31:46,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:31:46,275 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:31:46,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:31:46,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:31:46,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:31:46,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:31:46,276 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:31:46,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:31:46,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:31:46,277 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:31:46,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:31:46,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:31:46,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:31:46,350 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:31:46,350 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:31:46,351 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-1.i [2019-10-03 02:31:46,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfd64131/47b838acbcfa49c6999abfcbf974ced8/FLAG520f4ee1f [2019-10-03 02:31:46,838 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:31:46,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-1.i [2019-10-03 02:31:46,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfd64131/47b838acbcfa49c6999abfcbf974ced8/FLAG520f4ee1f [2019-10-03 02:31:47,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfd64131/47b838acbcfa49c6999abfcbf974ced8 [2019-10-03 02:31:47,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:31:47,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:31:47,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:31:47,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:31:47,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:31:47,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:31:47" (1/1) ... [2019-10-03 02:31:47,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450c6c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47, skipping insertion in model container [2019-10-03 02:31:47,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:31:47" (1/1) ... [2019-10-03 02:31:47,290 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:31:47,307 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:31:47,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:31:47,556 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:31:47,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:31:47,599 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:31:47,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47 WrapperNode [2019-10-03 02:31:47,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:31:47,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:31:47,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:31:47,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:31:47,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47" (1/1) ... [2019-10-03 02:31:47,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47" (1/1) ... [2019-10-03 02:31:47,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47" (1/1) ... [2019-10-03 02:31:47,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47" (1/1) ... [2019-10-03 02:31:47,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47" (1/1) ... [2019-10-03 02:31:47,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47" (1/1) ... [2019-10-03 02:31:47,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47" (1/1) ... [2019-10-03 02:31:47,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:31:47,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:31:47,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:31:47,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:31:47,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47" (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 [2019-10-03 02:31:47,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:31:47,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:31:47,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-03 02:31:47,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:31:47,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:31:47,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 02:31:47,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:31:47,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:31:47,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:31:47,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:31:47,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:31:47,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:31:47,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:31:50,042 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:31:50,043 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-03 02:31:50,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:31:50 BoogieIcfgContainer [2019-10-03 02:31:50,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:31:50,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:31:50,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:31:50,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:31:50,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:31:47" (1/3) ... [2019-10-03 02:31:50,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7773b654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:31:50, skipping insertion in model container [2019-10-03 02:31:50,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:47" (2/3) ... [2019-10-03 02:31:50,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7773b654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:31:50, skipping insertion in model container [2019-10-03 02:31:50,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:31:50" (3/3) ... [2019-10-03 02:31:50,059 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-1.i [2019-10-03 02:31:50,078 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:31:50,093 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:31:50,112 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:31:50,143 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:31:50,144 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:31:50,144 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:31:50,147 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:31:50,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:31:50,149 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:31:50,150 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:31:50,150 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:31:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-03 02:31:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-03 02:31:50,187 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:31:50,188 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:31:50,192 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:31:50,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:31:50,198 INFO L82 PathProgramCache]: Analyzing trace with hash -956066777, now seen corresponding path program 1 times [2019-10-03 02:31:50,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:31:50,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:50,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:31:50,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:50,250 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:31:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:31:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:31:50,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:31:50,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:31:50,336 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:31:50,340 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:31:50,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:31:50,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:31:50,353 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-10-03 02:31:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:31:50,368 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-10-03 02:31:50,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:31:50,369 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-03 02:31:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:31:50,379 INFO L225 Difference]: With dead ends: 27 [2019-10-03 02:31:50,379 INFO L226 Difference]: Without dead ends: 22 [2019-10-03 02:31:50,381 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 [2019-10-03 02:31:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-03 02:31:50,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-03 02:31:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-03 02:31:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-10-03 02:31:50,417 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2019-10-03 02:31:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:31:50,417 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-10-03 02:31:50,418 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:31:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-10-03 02:31:50,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-03 02:31:50,420 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:31:50,420 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:31:50,420 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:31:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:31:50,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1471973101, now seen corresponding path program 1 times [2019-10-03 02:31:50,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:31:50,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:50,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:31:50,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:50,424 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:31:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:31:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:31:50,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:31:50,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:31:50,518 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:31:50,520 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:31:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:31:50,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:31:50,521 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 3 states. [2019-10-03 02:31:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:31:50,597 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-10-03 02:31:50,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:31:50,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-03 02:31:50,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:31:50,599 INFO L225 Difference]: With dead ends: 29 [2019-10-03 02:31:50,599 INFO L226 Difference]: Without dead ends: 29 [2019-10-03 02:31:50,600 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 [2019-10-03 02:31:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-03 02:31:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2019-10-03 02:31:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-03 02:31:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-03 02:31:50,609 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2019-10-03 02:31:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:31:50,609 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-03 02:31:50,609 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:31:50,609 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-03 02:31:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-03 02:31:50,610 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:31:50,610 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:31:50,611 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:31:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:31:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash 534952077, now seen corresponding path program 1 times [2019-10-03 02:31:50,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:31:50,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:50,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:31:50,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:50,617 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:31:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:31:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:31:50,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:31:50,762 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:31:50,764 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-10-03 02:31:50,767 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [27], [30], [44], [47], [49], [55], [56], [57], [59] [2019-10-03 02:31:50,807 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:31:50,808 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:31:50,867 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:31:50,869 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. [2019-10-03 02:31:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:31:50,872 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:31:50,904 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-03 02:31:50,905 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:31:50,907 INFO L420 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2019-10-03 02:31:50,907 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:31:50,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:31:50,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-03 02:31:50,908 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:31:50,909 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:31:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:31:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:31:50,910 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 2 states. [2019-10-03 02:31:50,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:31:50,911 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-03 02:31:50,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:31:50,911 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-03 02:31:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:31:50,912 INFO L225 Difference]: With dead ends: 6 [2019-10-03 02:31:50,912 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:31:50,912 INFO L640 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 [2019-10-03 02:31:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:31:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:31:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:31:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:31:50,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-10-03 02:31:50,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:31:50,914 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:31:50,914 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:31:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:31:50,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:31:50,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:31:50 BoogieIcfgContainer [2019-10-03 02:31:50,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:31:50,924 INFO L168 Benchmark]: Toolchain (without parser) took 3647.67 ms. Allocated memory was 129.5 MB in the beginning and 197.7 MB in the end (delta: 68.2 MB). Free memory was 84.7 MB in the beginning and 115.1 MB in the end (delta: -30.4 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:31:50,925 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 129.5 MB. Free memory was 103.7 MB in the beginning and 103.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:31:50,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.53 ms. Allocated memory is still 129.5 MB. Free memory was 84.5 MB in the beginning and 74.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:31:50,927 INFO L168 Benchmark]: Boogie Preprocessor took 136.13 ms. Allocated memory was 129.5 MB in the beginning and 197.7 MB in the end (delta: 68.2 MB). Free memory was 74.6 MB in the beginning and 172.8 MB in the end (delta: -98.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-10-03 02:31:50,928 INFO L168 Benchmark]: RCFGBuilder took 2307.35 ms. Allocated memory is still 197.7 MB. Free memory was 172.8 MB in the beginning and 158.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:31:50,929 INFO L168 Benchmark]: TraceAbstraction took 875.32 ms. Allocated memory is still 197.7 MB. Free memory was 158.4 MB in the beginning and 115.1 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:31:50,933 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 129.5 MB. Free memory was 103.7 MB in the beginning and 103.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.53 ms. Allocated memory is still 129.5 MB. Free memory was 84.5 MB in the beginning and 74.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.13 ms. Allocated memory was 129.5 MB in the beginning and 197.7 MB in the end (delta: 68.2 MB). Free memory was 74.6 MB in the beginning and 172.8 MB in the end (delta: -98.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2307.35 ms. Allocated memory is still 197.7 MB. Free memory was 172.8 MB in the beginning and 158.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 875.32 ms. Allocated memory is still 197.7 MB. Free memory was 158.4 MB in the beginning and 115.1 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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, 27 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 4 SDslu, 16 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.95 AbsIntWeakeningRatio, 0.6666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 0.4 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 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...