/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/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:22:20,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:22:20,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:22:20,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 04:22:20,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:22:20,345 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:22:20,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:22:20,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:22:20,347 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:22:20,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:22:20,347 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:22:20,347 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:22:20,348 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:22:20,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:22:20,348 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:22:20,349 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:22:20,349 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:22:20,349 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:22:20,350 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:22:20,350 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:22:20,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:22:20,352 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:22:20,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:22:20,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:22:20,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:22:20,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:22:20,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:22:20,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:22:20,353 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:22:20,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:22:20,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:22:20,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:22:20,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:22:20,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:22:20,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:22:20,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:22:20,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:22:20,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:22:20,356 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:22:20,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:22:20,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:22:20,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:22:20,357 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:22:20,629 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:22:20,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:22:20,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:22:20,646 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:22:20,646 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:22:20,647 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-11-24 04:22:20,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0682e295d/2edade26250044bcbd764a5ba31af0a4/FLAG3c689c3cf [2019-11-24 04:22:21,163 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:22:21,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-11-24 04:22:21,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0682e295d/2edade26250044bcbd764a5ba31af0a4/FLAG3c689c3cf [2019-11-24 04:22:21,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0682e295d/2edade26250044bcbd764a5ba31af0a4 [2019-11-24 04:22:21,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:22:21,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:22:21,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:22:21,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:22:21,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:22:21,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3ccc0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21, skipping insertion in model container [2019-11-24 04:22:21,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:22:21,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:22:21,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:22:21,787 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:22:21,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:22:21,813 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:22:21,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21 WrapperNode [2019-11-24 04:22:21,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:22:21,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:22:21,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:22:21,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:22:21,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:22:21,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:22:21,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:22:21,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:22:21,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (1/1) ... [2019-11-24 04:22:21,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:22:21,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:22:21,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:22:21,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:22:21,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:22:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:22:22,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:22:22,217 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:22:22,217 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-24 04:22:22,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:22:22 BoogieIcfgContainer [2019-11-24 04:22:22,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:22:22,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:22:22,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:22:22,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:22:22,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:22:21" (1/3) ... [2019-11-24 04:22:22,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a26dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:22:22, skipping insertion in model container [2019-11-24 04:22:22,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:22:21" (2/3) ... [2019-11-24 04:22:22,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a26dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:22:22, skipping insertion in model container [2019-11-24 04:22:22,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:22:22" (3/3) ... [2019-11-24 04:22:22,226 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2019-11-24 04:22:22,236 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:22:22,242 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:22:22,254 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:22:22,278 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:22:22,278 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:22:22,278 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:22:22,278 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:22:22,278 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:22:22,279 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:22:22,279 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:22:22,279 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:22:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-24 04:22:22,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:22:22,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:22:22,298 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:22:22,298 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:22:22,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:22:22,303 INFO L82 PathProgramCache]: Analyzing trace with hash 2065207914, now seen corresponding path program 1 times [2019-11-24 04:22:22,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:22:22,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529917112] [2019-11-24 04:22:22,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:22:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:22:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:22:22,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529917112] [2019-11-24 04:22:22,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:22:22,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:22:22,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898225802] [2019-11-24 04:22:22,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:22:22,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:22:22,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:22:22,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:22:22,666 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2019-11-24 04:22:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:22:22,881 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-24 04:22:22,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:22:22,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 04:22:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:22:22,894 INFO L225 Difference]: With dead ends: 23 [2019-11-24 04:22:22,894 INFO L226 Difference]: Without dead ends: 9 [2019-11-24 04:22:22,900 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-24 04:22:22,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-24 04:22:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-24 04:22:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-24 04:22:22,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-24 04:22:22,931 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-24 04:22:22,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:22:22,932 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-24 04:22:22,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:22:22,932 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-24 04:22:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:22:22,933 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:22:22,933 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:22:22,934 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:22:22,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:22:22,934 INFO L82 PathProgramCache]: Analyzing trace with hash -405003410, now seen corresponding path program 1 times [2019-11-24 04:22:22,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:22:22,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746310646] [2019-11-24 04:22:22,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:22:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:22:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:22:23,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746310646] [2019-11-24 04:22:23,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741156429] [2019-11-24 04:22:23,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:22:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:22:23,137 WARN L253 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-24 04:22:23,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:22:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:22:23,216 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:22:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:22:23,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1891059360] [2019-11-24 04:22:23,328 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 04:22:23,329 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:22:23,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:22:23,362 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:22:23,363 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:22:24,273 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 186 [2019-11-24 04:22:24,562 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 229 [2019-11-24 04:22:24,749 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 228 [2019-11-24 04:22:24,961 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 271 [2019-11-24 04:22:25,166 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 260 [2019-11-24 04:22:25,406 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 327 [2019-11-24 04:22:25,662 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 318 [2019-11-24 04:22:26,012 WARN L192 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 424 DAG size of output: 406 [2019-11-24 04:22:26,377 WARN L192 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 396 DAG size of output: 392 [2019-11-24 04:22:26,920 WARN L192 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 562 [2019-11-24 04:22:27,671 WARN L192 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 560 DAG size of output: 543 [2019-11-24 04:22:28,171 WARN L192 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 538 [2019-11-24 04:22:28,528 WARN L192 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 539 DAG size of output: 539 [2019-11-24 04:22:29,307 WARN L192 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 734 DAG size of output: 729 [2019-11-24 04:22:30,076 WARN L192 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 728 DAG size of output: 721 [2019-11-24 04:22:31,324 WARN L192 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 1030 DAG size of output: 1028 [2019-11-24 04:22:32,702 WARN L192 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1027 DAG size of output: 1026 [2019-11-24 04:22:35,159 WARN L192 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 1482 DAG size of output: 1478 [2019-11-24 04:22:37,790 WARN L192 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 1476 DAG size of output: 1462 [2019-11-24 04:22:40,591 WARN L192 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 1463 [2019-11-24 04:22:43,207 WARN L192 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 1464 DAG size of output: 1464 [2019-11-24 04:22:47,949 WARN L192 SmtUtils]: Spent 4.63 s on a formula simplification. DAG size of input: 1902 DAG size of output: 1899 [2019-11-24 04:22:52,953 WARN L192 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 1896 DAG size of output: 1885 [2019-11-24 04:22:57,576 WARN L192 SmtUtils]: Spent 4.40 s on a formula simplification that was a NOOP. DAG size: 1891 [2019-11-24 04:23:02,050 WARN L192 SmtUtils]: Spent 4.47 s on a formula simplification. DAG size of input: 1892 DAG size of output: 1892 [2019-11-24 04:23:09,786 WARN L192 SmtUtils]: Spent 7.61 s on a formula simplification. DAG size of input: 2573 DAG size of output: 2570 [2019-11-24 04:23:18,194 WARN L192 SmtUtils]: Spent 8.24 s on a formula simplification. DAG size of input: 2569 DAG size of output: 2569 [2019-11-24 04:23:32,932 WARN L192 SmtUtils]: Spent 14.57 s on a formula simplification. DAG size of input: 3379 DAG size of output: 3372 [2019-11-24 04:23:47,794 WARN L192 SmtUtils]: Spent 14.58 s on a formula simplification. DAG size of input: 3368 DAG size of output: 3362 [2019-11-24 04:24:02,019 WARN L192 SmtUtils]: Spent 13.81 s on a formula simplification that was a NOOP. DAG size: 3363