/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-industry-pattern/array_ptr_single_elem_init-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:17:31,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:17:31,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:17:31,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 23:17:31,448 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 23:17:31,462 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:17:31,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:17:31,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:17:31,463 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:17:31,463 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:17:31,463 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:17:31,464 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:17:31,464 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:17:31,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:17:31,464 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:17:31,464 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:17:31,464 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:17:31,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:17:31,465 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:17:31,465 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:17:31,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:17:31,466 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:17:31,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:17:31,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:17:31,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:17:31,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:17:31,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:17:31,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:17:31,467 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:17:31,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:17:31,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:17:31,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:17:31,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:17:31,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:17:31,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:17:31,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:17:31,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:17:31,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:17:31,469 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:17:31,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:17:31,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:17:31,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:17:31,470 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:17:31,759 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:17:31,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:17:31,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:17:31,777 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:17:31,777 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:17:31,778 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_ptr_single_elem_init-2.i [2019-11-23 23:17:31,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03622571b/38dccaa40c2044229f21ffb032d8d725/FLAGcfcd1fe7e [2019-11-23 23:17:32,297 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:17:32,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_ptr_single_elem_init-2.i [2019-11-23 23:17:32,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03622571b/38dccaa40c2044229f21ffb032d8d725/FLAGcfcd1fe7e [2019-11-23 23:17:32,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03622571b/38dccaa40c2044229f21ffb032d8d725 [2019-11-23 23:17:32,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:17:32,710 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:17:32,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:17:32,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:17:32,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:17:32,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:32,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a08c9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32, skipping insertion in model container [2019-11-23 23:17:32,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:32,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:17:32,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:17:32,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:17:32,938 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:17:32,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:17:32,979 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:17:32,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32 WrapperNode [2019-11-23 23:17:32,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:17:32,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:17:32,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:17:32,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:17:32,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:33,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:33,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:17:33,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:17:33,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:17:33,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:17:33,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:33,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:33,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:33,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:33,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:33,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:33,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (1/1) ... [2019-11-23 23:17:33,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:17:33,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:17:33,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:17:33,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:17:33,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (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 23:17:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:17:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:17:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:17:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:17:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:17:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:17:33,658 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:17:33,659 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-23 23:17:33,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:17:33 BoogieIcfgContainer [2019-11-23 23:17:33,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:17:33,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:17:33,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:17:33,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:17:33,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:17:32" (1/3) ... [2019-11-23 23:17:33,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507aecc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:17:33, skipping insertion in model container [2019-11-23 23:17:33,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:32" (2/3) ... [2019-11-23 23:17:33,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507aecc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:17:33, skipping insertion in model container [2019-11-23 23:17:33,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:17:33" (3/3) ... [2019-11-23 23:17:33,670 INFO L109 eAbstractionObserver]: Analyzing ICFG array_ptr_single_elem_init-2.i [2019-11-23 23:17:33,679 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:17:33,687 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:17:33,698 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:17:33,719 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:17:33,720 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:17:33,720 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:17:33,720 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:17:33,720 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:17:33,720 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:17:33,721 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:17:33,721 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:17:33,733 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-23 23:17:33,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:17:33,739 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:17:33,740 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:17:33,740 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:17:33,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:17:33,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1420597460, now seen corresponding path program 1 times [2019-11-23 23:17:33,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:17:33,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504038364] [2019-11-23 23:17:33,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:17:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:17:33,904 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 23:17:33,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504038364] [2019-11-23 23:17:33,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:17:33,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:17:33,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309215044] [2019-11-23 23:17:33,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:17:33,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:17:33,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:17:33,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:17:33,935 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-11-23 23:17:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:17:34,032 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2019-11-23 23:17:34,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:17:34,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:17:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:17:34,047 INFO L225 Difference]: With dead ends: 22 [2019-11-23 23:17:34,048 INFO L226 Difference]: Without dead ends: 13 [2019-11-23 23:17:34,055 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 23:17:34,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-23 23:17:34,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-23 23:17:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-23 23:17:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-23 23:17:34,102 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2019-11-23 23:17:34,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:17:34,102 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-23 23:17:34,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:17:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-23 23:17:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 23:17:34,103 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:17:34,104 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:17:34,104 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:17:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:17:34,104 INFO L82 PathProgramCache]: Analyzing trace with hash 525819415, now seen corresponding path program 1 times [2019-11-23 23:17:34,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:17:34,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051783581] [2019-11-23 23:17:34,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:17:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:17:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:17:34,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051783581] [2019-11-23 23:17:34,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490193050] [2019-11-23 23:17:34,249 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 23:17:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:17:34,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:17:34,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:17:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 23:17:34,358 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:17:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 23:17:34,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151632514] [2019-11-23 23:17:34,408 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-23 23:17:34,408 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:17:34,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:17:34,421 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:17:34,421 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:17:34,721 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:34,781 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:34,955 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2019-11-23 23:17:34,981 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:34,998 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:35,011 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:35,022 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:35,181 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:35,493 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:35,535 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:35,924 WARN L192 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 436 [2019-11-23 23:17:35,965 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:36,251 WARN L192 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-11-23 23:17:36,288 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:36,493 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2019-11-23 23:17:36,533 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:36,707 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2019-11-23 23:17:37,406 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:37,592 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-23 23:17:38,457 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2019-11-23 23:17:38,482 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:38,630 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 380 [2019-11-23 23:17:38,676 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:38,784 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 371 [2019-11-23 23:17:38,810 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:38,939 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2019-11-23 23:17:38,969 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:39,001 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:39,151 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2019-11-23 23:17:39,177 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:39,304 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:39,403 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:39,528 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:39,631 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:39,733 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:39,753 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:39,841 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:39,921 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:40,343 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:40,616 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:40,682 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:40,871 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:40,935 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:41,408 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:42,204 WARN L192 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1471 [2019-11-23 23:17:48,304 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 0) [2019-11-23 23:17:50,310 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 0) [2019-11-23 23:17:56,414 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 0) [2019-11-23 23:17:57,183 WARN L192 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1469 [2019-11-23 23:17:57,278 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:58,026 WARN L192 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1455 [2019-11-23 23:17:58,096 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:58,179 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:58,892 WARN L192 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1440 [2019-11-23 23:17:58,980 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:59,074 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:59,776 WARN L192 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1425 [2019-11-23 23:17:59,844 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:17:59,910 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:00,595 WARN L192 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1412 [2019-11-23 23:18:00,646 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:01,333 WARN L192 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1398 [2019-11-23 23:18:01,403 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:02,059 WARN L192 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 1389 [2019-11-23 23:18:02,111 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:02,749 WARN L192 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 1373 [2019-11-23 23:18:02,818 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:03,439 WARN L192 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 1360 [2019-11-23 23:18:03,517 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:04,137 WARN L192 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 1349 [2019-11-23 23:18:04,196 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:04,799 WARN L192 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 1338 [2019-11-23 23:18:04,870 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:04,935 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:05,529 WARN L192 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 1321 [2019-11-23 23:18:05,601 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:06,199 WARN L192 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 1309 [2019-11-23 23:18:06,259 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:12,341 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 1) [2019-11-23 23:18:14,343 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 1) [2019-11-23 23:18:14,945 WARN L192 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 1306 [2019-11-23 23:18:15,008 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:15,573 WARN L192 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 1295 [2019-11-23 23:18:15,640 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:16,196 WARN L192 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 1286 [2019-11-23 23:18:16,249 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:16,798 WARN L192 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 1270 [2019-11-23 23:18:22,891 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 0) [2019-11-23 23:18:24,901 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 0) [2019-11-23 23:18:31,005 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 0) [2019-11-23 23:18:31,552 WARN L192 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 1266 [2019-11-23 23:18:31,608 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:32,149 WARN L192 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 1255 [2019-11-23 23:18:32,204 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:32,739 WARN L192 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 1241 [2019-11-23 23:18:32,794 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:38,873 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 1) [2019-11-23 23:18:40,878 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 1) [2019-11-23 23:18:41,395 WARN L192 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 1237 [2019-11-23 23:18:41,447 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:41,966 WARN L192 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-11-23 23:18:42,008 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:42,510 WARN L192 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 1210 [2019-11-23 23:18:42,567 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:43,059 WARN L192 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 1188 [2019-11-23 23:18:43,101 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:43,594 WARN L192 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 1167 [2019-11-23 23:18:43,646 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:43,696 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:44,162 WARN L192 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 1145 [2019-11-23 23:18:44,215 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:44,674 WARN L192 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1129 [2019-11-23 23:18:44,714 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:45,163 WARN L192 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1108 [2019-11-23 23:18:45,213 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:45,660 WARN L192 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-11-23 23:18:45,709 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:45,759 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:46,181 WARN L192 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-11-23 23:18:46,218 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:18:46,642 WARN L192 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1051 [2019-11-23 23:18:52,704 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (+ ULTIMATE.start_main_~i~0 (- 3))) [2019-11-23 23:18:54,710 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select v_prenex_54 (+ ULTIMATE.start_main_~i~0 (- 3))) 0) [2019-11-23 23:18:56,715 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select v_prenex_54 (+ ULTIMATE.start_main_~i~0 (- 3))) 0) [2019-11-23 23:18:58,720 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 0 (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 3)))) [2019-11-23 23:19:00,724 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 0 (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 3)))) [2019-11-23 23:19:02,729 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 0) [2019-11-23 23:19:04,736 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 0) [2019-11-23 23:19:10,803 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~i~0 (- 1)) (+ ULTIMATE.start_main_~i~0 (- 3))) [2019-11-23 23:19:12,809 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= 0 (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 3)))) [2019-11-23 23:19:14,816 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= 0 (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 3)))) [2019-11-23 23:19:16,819 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 0) [2019-11-23 23:19:18,827 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ULTIMATE.start_main_~c~0 (+ ULTIMATE.start_main_~i~0 (- 1))) 0) [2019-11-23 23:19:19,262 WARN L192 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 1046