/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/array-examples/standard_partition_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:12:33,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:12:33,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:12:33,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:12:33,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:12:33,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:12:33,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:12:33,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:12:33,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:12:33,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:12:33,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:12:33,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-11-23 23:12:33,626 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 [2019-11-23 23:12:33,649 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:12:33,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:12:33,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:12:33,650 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:12:33,650 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:12:33,653 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:12:33,653 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:12:33,653 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:12:33,653 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:12:33,653 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:12:33,654 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:12:33,654 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:12:33,654 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:12:33,654 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:12:33,654 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:12:33,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:12:33,655 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:12:33,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:12:33,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:12:33,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:12:33,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:12:33,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:12:33,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:12:33,658 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:12:33,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:12:33,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:12:33,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:12:33,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:12:33,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:12:33,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:12:33,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:12:33,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:12:33,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:12:33,660 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:12:33,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:12:33,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:12:33,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:12:33,661 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:12:33,925 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:12:33,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:12:33,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:12:33,948 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:12:33,948 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:12:33,949 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2019-11-23 23:12:34,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd16d54df/93c470af381a403a91158c6b0702ab61/FLAG9abaf8534 [2019-11-23 23:12:34,471 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:12:34,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2019-11-23 23:12:34,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd16d54df/93c470af381a403a91158c6b0702ab61/FLAG9abaf8534 [2019-11-23 23:12:34,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd16d54df/93c470af381a403a91158c6b0702ab61 [2019-11-23 23:12:34,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:12:34,849 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:12:34,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:12:34,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:12:34,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:12:34,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:12:34" (1/1) ... [2019-11-23 23:12:34,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@232a178b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:34, skipping insertion in model container [2019-11-23 23:12:34,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:12:34" (1/1) ... [2019-11-23 23:12:34,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:12:34,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:12:35,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:12:35,080 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:12:35,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:12:35,136 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:12:35,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35 WrapperNode [2019-11-23 23:12:35,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:12:35,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:12:35,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:12:35,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:12:35,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (1/1) ... [2019-11-23 23:12:35,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (1/1) ... [2019-11-23 23:12:35,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:12:35,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:12:35,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:12:35,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:12:35,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (1/1) ... [2019-11-23 23:12:35,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (1/1) ... [2019-11-23 23:12:35,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (1/1) ... [2019-11-23 23:12:35,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (1/1) ... [2019-11-23 23:12:35,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (1/1) ... [2019-11-23 23:12:35,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (1/1) ... [2019-11-23 23:12:35,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (1/1) ... [2019-11-23 23:12:35,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:12:35,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:12:35,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:12:35,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:12:35,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (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 [2019-11-23 23:12:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:12:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:12:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:12:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:12:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:12:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:12:35,976 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:12:35,977 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-23 23:12:35,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:12:35 BoogieIcfgContainer [2019-11-23 23:12:35,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:12:35,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:12:35,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:12:35,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:12:35,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:12:34" (1/3) ... [2019-11-23 23:12:35,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2ec76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:12:35, skipping insertion in model container [2019-11-23 23:12:35,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:35" (2/3) ... [2019-11-23 23:12:35,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2ec76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:12:35, skipping insertion in model container [2019-11-23 23:12:35,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:12:35" (3/3) ... [2019-11-23 23:12:35,993 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2019-11-23 23:12:36,001 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:12:36,007 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-23 23:12:36,017 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-23 23:12:36,042 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:12:36,042 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:12:36,042 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:12:36,043 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:12:36,043 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:12:36,044 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:12:36,044 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:12:36,044 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:12:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-23 23:12:36,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:12:36,063 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:12:36,064 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:12:36,064 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:12:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:12:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash -620674354, now seen corresponding path program 1 times [2019-11-23 23:12:36,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:12:36,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037051158] [2019-11-23 23:12:36,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:12:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:12:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:12:36,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037051158] [2019-11-23 23:12:36,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:12:36,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:12:36,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207573090] [2019-11-23 23:12:36,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:12:36,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:12:36,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:12:36,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:12:36,264 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-23 23:12:36,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:12:36,314 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2019-11-23 23:12:36,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:12:36,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:12:36,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:12:36,328 INFO L225 Difference]: With dead ends: 28 [2019-11-23 23:12:36,328 INFO L226 Difference]: Without dead ends: 15 [2019-11-23 23:12:36,331 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 [2019-11-23 23:12:36,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-23 23:12:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-23 23:12:36,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-23 23:12:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-11-23 23:12:36,372 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2019-11-23 23:12:36,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:12:36,372 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-23 23:12:36,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:12:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2019-11-23 23:12:36,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:12:36,373 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:12:36,374 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:12:36,374 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:12:36,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:12:36,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1907661281, now seen corresponding path program 1 times [2019-11-23 23:12:36,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:12:36,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447245946] [2019-11-23 23:12:36,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:12:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:12:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:12:36,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447245946] [2019-11-23 23:12:36,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944886567] [2019-11-23 23:12:36,480 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 [2019-11-23 23:12:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:12:36,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:12:36,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:12:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:12:36,573 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:12:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:12:36,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [140495372] [2019-11-23 23:12:36,613 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-23 23:12:36,613 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:12:36,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:12:36,625 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:12:36,626 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:12:38,167 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-11-23 23:12:38,352 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 134 [2019-11-23 23:12:39,877 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 449 [2019-11-23 23:12:40,363 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-11-23 23:12:42,013 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 429 [2019-11-23 23:12:42,487 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 420 [2019-11-23 23:12:42,796 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2019-11-23 23:12:43,828 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 392 [2019-11-23 23:12:44,009 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-11-23 23:12:44,241 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2019-11-23 23:12:44,418 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 348 [2019-11-23 23:12:44,624 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2019-11-23 23:12:44,817 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2019-11-23 23:12:44,969 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2019-11-23 23:12:46,630 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-11-23 23:12:49,548 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 590 [2019-11-23 23:12:50,253 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-11-23 23:12:50,524 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 580 [2019-11-23 23:12:50,777 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-11-23 23:12:52,446 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 572 [2019-11-23 23:12:52,739 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-23 23:12:53,357 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-11-23 23:12:53,905 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 549 [2019-11-23 23:12:54,659 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 538 [2019-11-23 23:12:55,578 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 534 [2019-11-23 23:12:55,989 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 522 [2019-11-23 23:12:56,207 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-11-23 23:12:56,407 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 500 [2019-11-23 23:12:56,623 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-23 23:12:56,997 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-11-23 23:12:57,354 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 468 [2019-11-23 23:12:57,653 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 451 [2019-11-23 23:12:57,843 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-11-23 23:12:58,012 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 416 [2019-11-23 23:12:58,189 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-23 23:12:58,366 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2019-11-23 23:12:58,569 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2019-11-23 23:12:59,231 WARN L192 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2019-11-23 23:12:59,526 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-23 23:13:00,317 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2019-11-23 23:13:01,310 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2019-11-23 23:13:03,434 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 168 [2019-11-23 23:13:04,325 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2019-11-23 23:13:05,612 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2019-11-23 23:13:08,429 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-11-23 23:13:08,894 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 433 [2019-11-23 23:13:09,272 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 429 [2019-11-23 23:13:09,776 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 423 [2019-11-23 23:13:10,191 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 417 [2019-11-23 23:13:10,435 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2019-11-23 23:13:10,713 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 407 [2019-11-23 23:13:10,927 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2019-11-23 23:13:11,131 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2019-11-23 23:13:11,370 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 393 [2019-11-23 23:13:11,579 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2019-11-23 23:13:11,865 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-23 23:13:12,124 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2019-11-23 23:13:12,456 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2019-11-23 23:13:13,121 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2019-11-23 23:13:13,873 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2019-11-23 23:13:15,743 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 810 [2019-11-23 23:13:18,422 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#aa~0.base|) (+ |ULTIMATE.start_main_~#aa~0.offset| (* ULTIMATE.start_main_~a~0 4) (- 4))) v_prenex_194) [2019-11-23 23:13:18,766 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 806 [2019-11-23 23:13:23,082 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#bb~0.base| |ULTIMATE.start_main_~#aa~0.base|) [2019-11-23 23:13:26,911 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#aa~0.base|) (+ |ULTIMATE.start_main_~#aa~0.offset| (* ULTIMATE.start_main_~a~0 4) (- 4))) v_prenex_181) [2019-11-23 23:13:27,076 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 802 [2019-11-23 23:13:33,349 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#aa~0.base|) (+ |ULTIMATE.start_main_~#aa~0.offset| (* ULTIMATE.start_main_~a~0 4) (- 4))) v_prenex_184) [2019-11-23 23:13:35,366 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#aa~0.base|) (+ |ULTIMATE.start_main_~#aa~0.offset| (* ULTIMATE.start_main_~a~0 4) (- 4))) v_prenex_184) [2019-11-23 23:13:35,537 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 796 [2019-11-23 23:13:38,048 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 790 [2019-11-23 23:13:46,345 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#aa~0.base|) (+ |ULTIMATE.start_main_~#aa~0.offset| (* ULTIMATE.start_main_~a~0 4) (- 4))) v_prenex_151) [2019-11-23 23:13:48,351 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#aa~0.base|) (+ |ULTIMATE.start_main_~#aa~0.offset| (* ULTIMATE.start_main_~a~0 4) (- 4))) v_prenex_151) [2019-11-23 23:13:48,507 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 785 [2019-11-23 23:13:50,529 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 779 [2019-11-23 23:13:53,249 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 773 [2019-11-23 23:13:55,100 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 769 [2019-11-23 23:13:57,443 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 765 [2019-11-23 23:13:58,059 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 761 [2019-11-23 23:13:58,413 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 757 [2019-11-23 23:14:00,157 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 753 [2019-11-23 23:14:01,986 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 749 [2019-11-23 23:14:04,026 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 743 [2019-11-23 23:14:07,435 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 737 [2019-11-23 23:14:07,815 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 733 [2019-11-23 23:14:08,545 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 727 [2019-11-23 23:14:08,804 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 723 [2019-11-23 23:14:09,077 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 714 [2019-11-23 23:14:09,563 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 705 [2019-11-23 23:14:10,917 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 694 [2019-11-23 23:14:12,178 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 690 [2019-11-23 23:14:12,875 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 679