/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-tiling/rewnif.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:27:39,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:27:39,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:27:39,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 23:27:39,881 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 23:27:39,901 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:27:39,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:27:39,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:27:39,903 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:27:39,905 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:27:39,905 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:27:39,906 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:27:39,906 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:27:39,906 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:27:39,906 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:27:39,907 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:27:39,908 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:27:39,908 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:27:39,908 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:27:39,908 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:27:39,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:27:39,910 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:27:39,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:27:39,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:27:39,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:27:39,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:27:39,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:27:39,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:27:39,913 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:27:39,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:27:39,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:27:39,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:27:39,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:27:39,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:27:39,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:27:39,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:27:39,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:27:39,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:27:39,917 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:27:39,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:27:39,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:27:39,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:27:39,918 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:27:40,198 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:27:40,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:27:40,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:27:40,217 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:27:40,217 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:27:40,218 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnif.c [2019-11-23 23:27:40,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abadaabce/dbafb2dd3f7640449ca11698aad354bb/FLAGd933a5767 [2019-11-23 23:27:40,713 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:27:40,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnif.c [2019-11-23 23:27:40,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abadaabce/dbafb2dd3f7640449ca11698aad354bb/FLAGd933a5767 [2019-11-23 23:27:41,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abadaabce/dbafb2dd3f7640449ca11698aad354bb [2019-11-23 23:27:41,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:27:41,122 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:27:41,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:27:41,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:27:41,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:27:41,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bfee95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41, skipping insertion in model container [2019-11-23 23:27:41,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:27:41,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:27:41,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:27:41,356 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:27:41,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:27:41,393 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:27:41,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41 WrapperNode [2019-11-23 23:27:41,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:27:41,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:27:41,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:27:41,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:27:41,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:27:41,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:27:41,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:27:41,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:27:41,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (1/1) ... [2019-11-23 23:27:41,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:27:41,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:27:41,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:27:41,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:27:41,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (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 23:27:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:27:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-23 23:27:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:27:41,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:27:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:27:41,917 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:27:41,917 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-23 23:27:41,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:27:41 BoogieIcfgContainer [2019-11-23 23:27:41,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:27:41,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:27:41,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:27:41,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:27:41,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:27:41" (1/3) ... [2019-11-23 23:27:41,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9875afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:27:41, skipping insertion in model container [2019-11-23 23:27:41,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:41" (2/3) ... [2019-11-23 23:27:41,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9875afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:27:41, skipping insertion in model container [2019-11-23 23:27:41,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:27:41" (3/3) ... [2019-11-23 23:27:41,926 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnif.c [2019-11-23 23:27:41,933 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:27:41,939 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:27:41,949 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:27:41,968 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:27:41,968 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:27:41,968 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:27:41,969 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:27:41,969 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:27:41,969 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:27:41,969 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:27:41,969 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:27:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-23 23:27:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:27:41,985 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:27:41,986 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:27:41,986 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:27:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:27:41,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1768984337, now seen corresponding path program 1 times [2019-11-23 23:27:41,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:27:42,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633633550] [2019-11-23 23:27:42,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:27:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:27:42,178 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 23:27:42,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633633550] [2019-11-23 23:27:42,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:27:42,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:27:42,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105046212] [2019-11-23 23:27:42,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:27:42,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:27:42,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:27:42,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:27:42,197 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-11-23 23:27:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:27:42,244 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2019-11-23 23:27:42,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:27:42,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:27:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:27:42,256 INFO L225 Difference]: With dead ends: 18 [2019-11-23 23:27:42,256 INFO L226 Difference]: Without dead ends: 9 [2019-11-23 23:27:42,259 INFO L630 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 [2019-11-23 23:27:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-23 23:27:42,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-23 23:27:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-23 23:27:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-23 23:27:42,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2019-11-23 23:27:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:27:42,295 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-23 23:27:42,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:27:42,295 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-23 23:27:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 23:27:42,296 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:27:42,296 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:27:42,297 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:27:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:27:42,297 INFO L82 PathProgramCache]: Analyzing trace with hash 995163765, now seen corresponding path program 1 times [2019-11-23 23:27:42,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:27:42,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628406988] [2019-11-23 23:27:42,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:27:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:27:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:27:42,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628406988] [2019-11-23 23:27:42,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284314512] [2019-11-23 23:27:42,367 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 23:27:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:27:42,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 23:27:42,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:27:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:27:42,491 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:27:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:27:42,523 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [101667632] [2019-11-23 23:27:42,552 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-23 23:27:42,552 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:27:42,575 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:27:42,589 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:27:42,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:27:42,993 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:27:43,431 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:27:44,066 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:27:45,438 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2019-11-23 23:27:45,695 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 110 [2019-11-23 23:27:46,090 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:27:47,452 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2019-11-23 23:27:47,621 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2019-11-23 23:27:48,894 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:27:51,169 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:27:54,861 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:27:57,338 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:27:58,010 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:27:59,130 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:28:00,131 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-11-23 23:28:00,334 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 176 [2019-11-23 23:28:00,403 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:28:02,096 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2019-11-23 23:28:02,533 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-11-23 23:28:02,764 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 229 [2019-11-23 23:28:02,986 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2019-11-23 23:28:03,327 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2019-11-23 23:28:03,591 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-11-23 23:28:04,210 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:28:05,403 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:28:06,568 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:28:07,706 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:28:09,050 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:28:16,420 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (* ULTIMATE.start_main_~i~0 4))) (= (+ ULTIMATE.start_main_~a~0.offset .cse0 (- 4)) (+ ULTIMATE.start_main_~a~0.offset .cse0))) [2019-11-23 23:28:18,426 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4)))) [2019-11-23 23:28:20,431 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4)))) [2019-11-23 23:28:22,434 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))) [2019-11-23 23:28:24,443 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))) [2019-11-23 23:28:24,577 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-11-23 23:28:31,928 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (* ULTIMATE.start_main_~i~0 4))) (= (+ ULTIMATE.start_main_~a~0.offset .cse0 (- 4)) (+ ULTIMATE.start_main_~a~0.offset .cse0))) [2019-11-23 23:28:33,932 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4)))) [2019-11-23 23:28:35,940 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4)))) [2019-11-23 23:28:37,947 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))) [2019-11-23 23:28:39,950 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))) [2019-11-23 23:28:46,080 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (* ULTIMATE.start_main_~i~0 4))) (= (+ ULTIMATE.start_main_~a~0.offset .cse0 (- 4)) (+ ULTIMATE.start_main_~a~0.offset .cse0))) [2019-11-23 23:28:48,087 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4)))) [2019-11-23 23:28:50,093 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4)))) [2019-11-23 23:28:52,097 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))) [2019-11-23 23:28:54,104 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))) [2019-11-23 23:29:01,051 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (* ULTIMATE.start_main_~i~0 4))) (= (+ ULTIMATE.start_main_~a~0.offset .cse0 (- 4)) (+ ULTIMATE.start_main_~a~0.offset .cse0))) [2019-11-23 23:29:03,057 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4)))) [2019-11-23 23:29:05,061 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4)))) [2019-11-23 23:29:07,064 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))) [2019-11-23 23:29:09,068 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))) [2019-11-23 23:29:15,524 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (* ULTIMATE.start_main_~i~0 4))) (= (+ ULTIMATE.start_main_~a~0.offset .cse0 (- 4)) (+ ULTIMATE.start_main_~a~0.offset .cse0))) [2019-11-23 23:29:17,530 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4)))) [2019-11-23 23:29:19,533 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4))))