/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:22:12,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:22:12,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:22:12,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 04:22:13,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:22:13,084 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:22:13,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:22:13,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:22:13,085 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:22:13,085 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:22:13,085 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:22:13,086 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:22:13,086 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:22:13,086 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:22:13,086 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:22:13,086 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:22:13,087 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:22:13,090 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:22:13,090 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:22:13,090 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:22:13,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:22:13,091 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:22:13,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:22:13,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:22:13,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:22:13,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:22:13,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:22:13,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:22:13,093 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:22:13,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:22:13,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:22:13,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:22:13,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:22:13,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:22:13,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:22:13,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:22:13,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:22:13,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:22:13,095 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:22:13,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:22:13,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:22:13,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:22:13,096 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:22:13,390 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:22:13,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:22:13,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:22:13,407 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:22:13,408 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:22:13,408 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2019-11-24 04:22:13,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ab45670/66bf61a7785f4937b614567a7d51de1d/FLAG04e6c9d36 [2019-11-24 04:22:13,942 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:22:13,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i [2019-11-24 04:22:13,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ab45670/66bf61a7785f4937b614567a7d51de1d/FLAG04e6c9d36 [2019-11-24 04:22:14,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ab45670/66bf61a7785f4937b614567a7d51de1d [2019-11-24 04:22:14,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:22:14,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:22:14,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:22:14,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:22:14,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:22:14,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254d4563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14, skipping insertion in model container [2019-11-24 04:22:14,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:22:14,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:22:14,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:22:14,615 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:22:14,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:22:14,651 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:22:14,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14 WrapperNode [2019-11-24 04:22:14,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:22:14,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:22:14,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:22:14,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:22:14,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:22:14,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:22:14,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:22:14,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:22:14,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (1/1) ... [2019-11-24 04:22:14,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:22:14,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:22:14,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:22:14,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:22:14,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (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 [2019-11-24 04:22:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:22:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:22:15,034 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:22:15,035 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 04:22:15,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:22:15 BoogieIcfgContainer [2019-11-24 04:22:15,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:22:15,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:22:15,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:22:15,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:22:15,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:22:14" (1/3) ... [2019-11-24 04:22:15,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725e4630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:22:15, skipping insertion in model container [2019-11-24 04:22:15,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:14" (2/3) ... [2019-11-24 04:22:15,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725e4630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:22:15, skipping insertion in model container [2019-11-24 04:22:15,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:22:15" (3/3) ... [2019-11-24 04:22:15,044 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2019-11-24 04:22:15,054 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:22:15,061 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:22:15,073 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:22:15,101 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:22:15,101 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:22:15,101 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:22:15,101 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:22:15,102 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:22:15,105 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:22:15,105 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:22:15,105 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:22:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-24 04:22:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 04:22:15,159 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:22:15,164 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 04:22:15,164 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:22:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:22:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash 29766720, now seen corresponding path program 1 times [2019-11-24 04:22:15,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:22:15,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847312736] [2019-11-24 04:22:15,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:22:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:22:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:22:15,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847312736] [2019-11-24 04:22:15,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:22:15,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:22:15,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889282509] [2019-11-24 04:22:15,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:22:15,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:22:15,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:22:15,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:22:15,351 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-24 04:22:15,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:22:15,386 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-11-24 04:22:15,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:22:15,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-24 04:22:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:22:15,395 INFO L225 Difference]: With dead ends: 18 [2019-11-24 04:22:15,396 INFO L226 Difference]: Without dead ends: 7 [2019-11-24 04:22:15,399 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:22:15,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-24 04:22:15,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-24 04:22:15,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-24 04:22:15,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-24 04:22:15,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-24 04:22:15,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:22:15,428 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-24 04:22:15,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:22:15,429 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-24 04:22:15,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:22:15,429 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:22:15,430 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:22:15,430 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:22:15,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:22:15,430 INFO L82 PathProgramCache]: Analyzing trace with hash 922156125, now seen corresponding path program 1 times [2019-11-24 04:22:15,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:22:15,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554578049] [2019-11-24 04:22:15,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:22:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:22:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:22:15,501 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554578049] [2019-11-24 04:22:15,501 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937023377] [2019-11-24 04:22:15,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:22:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:22:15,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-24 04:22:15,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:22:15,592 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:22:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:22:15,622 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:22:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:22:15,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 04:22:15,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2019-11-24 04:22:15,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374123784] [2019-11-24 04:22:15,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:22:15,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:22:15,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:22:15,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-24 04:22:15,655 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-11-24 04:22:15,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:22:15,713 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-11-24 04:22:15,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:22:15,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-24 04:22:15,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:22:15,715 INFO L225 Difference]: With dead ends: 7 [2019-11-24 04:22:15,715 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 04:22:15,717 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-24 04:22:15,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 04:22:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 04:22:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 04:22:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 04:22:15,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-11-24 04:22:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:22:15,718 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 04:22:15,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:22:15,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 04:22:15,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 04:22:15,922 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:22:15,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 04:22:15,962 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 04:22:15,963 INFO L440 ceAbstractionStarter]: At program point L15-2(lines 15 18) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~x~0 2) ULTIMATE.start_main_~y~0) (<= (+ ULTIMATE.start_main_~x~0 50) 0)) [2019-11-24 04:22:15,963 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-24 04:22:15,963 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 04:22:15,964 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-24 04:22:15,964 INFO L447 ceAbstractionStarter]: At program point L20(lines 10 21) the Hoare annotation is: true [2019-11-24 04:22:15,964 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-24 04:22:15,964 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-24 04:22:15,964 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-24 04:22:15,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:22:15 BoogieIcfgContainer [2019-11-24 04:22:15,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:22:15,982 INFO L168 Benchmark]: Toolchain (without parser) took 1602.33 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 103.3 MB in the beginning and 128.6 MB in the end (delta: -25.3 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:15,983 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-24 04:22:15,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.20 ms. Allocated memory is still 144.2 MB. Free memory was 103.1 MB in the beginning and 93.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:15,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.70 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 93.4 MB in the beginning and 182.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:15,986 INFO L168 Benchmark]: Boogie Preprocessor took 21.67 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 180.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:15,987 INFO L168 Benchmark]: RCFGBuilder took 245.41 ms. Allocated memory is still 202.9 MB. Free memory was 180.7 MB in the beginning and 169.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:15,988 INFO L168 Benchmark]: TraceAbstraction took 942.10 ms. Allocated memory is still 202.9 MB. Free memory was 168.6 MB in the beginning and 128.6 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2019-11-24 04:22:15,993 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 144.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.20 ms. Allocated memory is still 144.2 MB. Free memory was 103.1 MB in the beginning and 93.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 116.70 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 93.4 MB in the beginning and 182.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.67 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 180.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 245.41 ms. Allocated memory is still 202.9 MB. Free memory was 180.7 MB in the beginning and 169.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 942.10 ms. Allocated memory is still 202.9 MB. Free memory was 168.6 MB in the beginning and 128.6 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x + 2 <= y || x + 50 <= 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 5 SDslu, 7 SDs, 0 SdLazy, 15 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 273 SizeOfPredicates, 6 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...