/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:21:26,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:21:26,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:21:26,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 04:21:26,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:21:26,115 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:21:26,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:21:26,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:21:26,117 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:21:26,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:21:26,117 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:21:26,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:21:26,117 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:21:26,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:21:26,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:21:26,119 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:21:26,119 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:21:26,119 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:21:26,119 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:21:26,120 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:21:26,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:21:26,121 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:21:26,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:21:26,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:21:26,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:21:26,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:21:26,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:21:26,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:21:26,124 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:21:26,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:21:26,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:21:26,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:21:26,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:21:26,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:21:26,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:21:26,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:21:26,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:21:26,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:21:26,126 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:21:26,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:21:26,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:21:26,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:21:26,127 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:21:26,402 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:21:26,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:21:26,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:21:26,418 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:21:26,419 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:21:26,420 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2019-11-24 04:21:26,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbacc30f8/311ca67349f844a7819a953c18ae059e/FLAG64dd08b92 [2019-11-24 04:21:26,953 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:21:26,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2019-11-24 04:21:26,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbacc30f8/311ca67349f844a7819a953c18ae059e/FLAG64dd08b92 [2019-11-24 04:21:27,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbacc30f8/311ca67349f844a7819a953c18ae059e [2019-11-24 04:21:27,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:21:27,328 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:21:27,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:21:27,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:21:27,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:21:27,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d15d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27, skipping insertion in model container [2019-11-24 04:21:27,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:21:27,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:21:27,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:21:27,603 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:21:27,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:21:27,726 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:21:27,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27 WrapperNode [2019-11-24 04:21:27,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:21:27,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:21:27,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:21:27,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:21:27,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:21:27,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:21:27,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:21:27,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:21:27,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (1/1) ... [2019-11-24 04:21:27,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:21:27,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:21:27,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:21:27,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:21:27,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:21:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:21:27,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:21:28,312 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:21:28,313 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-24 04:21:28,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:21:28 BoogieIcfgContainer [2019-11-24 04:21:28,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:21:28,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:21:28,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:21:28,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:21:28,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:21:27" (1/3) ... [2019-11-24 04:21:28,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5e3b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:21:28, skipping insertion in model container [2019-11-24 04:21:28,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:27" (2/3) ... [2019-11-24 04:21:28,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5e3b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:21:28, skipping insertion in model container [2019-11-24 04:21:28,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:21:28" (3/3) ... [2019-11-24 04:21:28,322 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.c [2019-11-24 04:21:28,332 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:21:28,339 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:21:28,349 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:21:28,374 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:21:28,374 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:21:28,374 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:21:28,374 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:21:28,374 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:21:28,375 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:21:28,375 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:21:28,375 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:21:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-24 04:21:28,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:21:28,396 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:21:28,397 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:21:28,397 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:21:28,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:21:28,404 INFO L82 PathProgramCache]: Analyzing trace with hash 930148037, now seen corresponding path program 1 times [2019-11-24 04:21:28,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:21:28,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58043168] [2019-11-24 04:21:28,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:21:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:21:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:21:28,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58043168] [2019-11-24 04:21:28,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:21:28,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-24 04:21:28,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85671390] [2019-11-24 04:21:28,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-24 04:21:28,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:21:28,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-24 04:21:28,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-24 04:21:28,819 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 12 states. [2019-11-24 04:21:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:21:28,960 INFO L93 Difference]: Finished difference Result 22 states and 33 transitions. [2019-11-24 04:21:28,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-24 04:21:28,962 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2019-11-24 04:21:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:21:28,972 INFO L225 Difference]: With dead ends: 22 [2019-11-24 04:21:28,972 INFO L226 Difference]: Without dead ends: 15 [2019-11-24 04:21:28,976 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-24 04:21:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-24 04:21:29,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-24 04:21:29,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-24 04:21:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-24 04:21:29,017 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2019-11-24 04:21:29,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:21:29,018 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-24 04:21:29,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-24 04:21:29,018 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-24 04:21:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 04:21:29,019 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:21:29,020 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:21:29,020 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:21:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:21:29,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1228635627, now seen corresponding path program 1 times [2019-11-24 04:21:29,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:21:29,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001561096] [2019-11-24 04:21:29,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:21:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:21:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:21:29,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001561096] [2019-11-24 04:21:29,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422367090] [2019-11-24 04:21:29,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:21:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:21:29,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-24 04:21:29,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:21:29,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,490 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:21:29,538 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:21:29,566 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,598 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:21:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:21:29,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [946782137] [2019-11-24 04:21:29,944 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-11-24 04:21:29,944 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:21:29,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:21:29,958 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:21:29,959 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:21:30,423 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 130 [2019-11-24 04:21:30,743 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 201 [2019-11-24 04:21:30,982 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 187 [2019-11-24 04:21:31,338 WARN L192 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 280 [2019-11-24 04:21:31,719 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 279 [2019-11-24 04:21:32,111 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2019-11-24 04:21:32,363 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 285 [2019-11-24 04:21:32,979 WARN L192 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 490 DAG size of output: 482 [2019-11-24 04:21:33,663 WARN L192 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 483 DAG size of output: 481 [2019-11-24 04:21:34,739 WARN L192 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 803 DAG size of output: 800 [2019-11-24 04:21:36,428 WARN L192 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 801 DAG size of output: 783 [2019-11-24 04:21:38,307 WARN L192 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 773 DAG size of output: 773 [2019-11-24 04:21:39,295 WARN L192 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 774 DAG size of output: 774 [2019-11-24 04:21:44,645 WARN L192 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 1368 DAG size of output: 1359 [2019-11-24 04:21:51,175 WARN L192 SmtUtils]: Spent 4.95 s on a formula simplification. DAG size of input: 1360 DAG size of output: 1344 [2019-11-24 04:22:05,854 WARN L192 SmtUtils]: Spent 12.98 s on a formula simplification. DAG size of input: 2224 DAG size of output: 2198 [2019-11-24 04:22:24,758 WARN L192 SmtUtils]: Spent 13.35 s on a formula simplification. DAG size of input: 2199 DAG size of output: 2180