/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/eca-rers2012/Problem11_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:57:42,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:57:42,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:57:42,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 23:57:42,858 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 23:57:42,873 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:57:42,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:57:42,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:57:42,875 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:57:42,875 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:57:42,875 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:57:42,875 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:57:42,875 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:57:42,875 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:57:42,876 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:57:42,876 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:57:42,876 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:57:42,876 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:57:42,876 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:57:42,877 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:57:42,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:57:42,878 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:57:42,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:57:42,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:57:42,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:57:42,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:57:42,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:57:42,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:57:42,879 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:57:42,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:57:42,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:57:42,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:57:42,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:57:42,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:57:42,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:57:42,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:57:42,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:57:42,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:57:42,881 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:57:42,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:57:42,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:57:42,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:57:42,882 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:57:43,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:57:43,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:57:43,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:57:43,169 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:57:43,170 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:57:43,170 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label29.c [2019-11-23 23:57:43,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88fcce88/783f9c67311b47118819810a93b50c76/FLAGcef099583 [2019-11-23 23:57:43,872 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:57:43,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label29.c [2019-11-23 23:57:43,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88fcce88/783f9c67311b47118819810a93b50c76/FLAGcef099583 [2019-11-23 23:57:44,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88fcce88/783f9c67311b47118819810a93b50c76 [2019-11-23 23:57:44,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:57:44,055 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:57:44,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:57:44,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:57:44,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:57:44,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:57:44" (1/1) ... [2019-11-23 23:57:44,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66da9fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:44, skipping insertion in model container [2019-11-23 23:57:44,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:57:44" (1/1) ... [2019-11-23 23:57:44,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:57:44,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:57:44,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:57:44,908 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:57:45,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:57:45,137 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:57:45,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45 WrapperNode [2019-11-23 23:57:45,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:57:45,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:57:45,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:57:45,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:57:45,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (1/1) ... [2019-11-23 23:57:45,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (1/1) ... [2019-11-23 23:57:45,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:57:45,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:57:45,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:57:45,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:57:45,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (1/1) ... [2019-11-23 23:57:45,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (1/1) ... [2019-11-23 23:57:45,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (1/1) ... [2019-11-23 23:57:45,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (1/1) ... [2019-11-23 23:57:45,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (1/1) ... [2019-11-23 23:57:45,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (1/1) ... [2019-11-23 23:57:45,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (1/1) ... [2019-11-23 23:57:45,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:57:45,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:57:45,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:57:45,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:57:45,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (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 23:57:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:57:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:59:26,277 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:59:26,278 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 23:59:26,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:59:26 BoogieIcfgContainer [2019-11-23 23:59:26,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:59:26,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:59:26,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:59:26,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:59:26,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:57:44" (1/3) ... [2019-11-23 23:59:26,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c897f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:59:26, skipping insertion in model container [2019-11-23 23:59:26,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:45" (2/3) ... [2019-11-23 23:59:26,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c897f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:59:26, skipping insertion in model container [2019-11-23 23:59:26,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:59:26" (3/3) ... [2019-11-23 23:59:26,288 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label29.c [2019-11-23 23:59:26,298 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:59:26,305 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:59:26,316 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:59:26,337 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:59:26,338 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:59:26,338 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:59:26,338 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:59:26,338 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:59:26,338 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:59:26,338 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:59:26,338 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:59:26,349 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 23:59:26,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-23 23:59:26,354 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:59:26,355 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-23 23:59:26,355 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:59:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:59:26,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1169120276, now seen corresponding path program 1 times [2019-11-23 23:59:26,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:59:26,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327855042] [2019-11-23 23:59:26,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:59:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:59:26,560 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 23:59:26,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327855042] [2019-11-23 23:59:26,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:59:26,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:59:26,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445140110] [2019-11-23 23:59:26,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:59:26,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:59:26,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:59:26,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:59:26,587 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-23 23:59:26,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:59:26,757 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2019-11-23 23:59:26,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:59:26,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-23 23:59:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:59:26,772 INFO L225 Difference]: With dead ends: 23 [2019-11-23 23:59:26,773 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 23:59:26,778 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:59:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 23:59:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-23 23:59:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 23:59:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-23 23:59:26,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2019-11-23 23:59:26,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:59:26,816 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-23 23:59:26,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:59:26,816 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-23 23:59:26,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 23:59:26,817 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:59:26,818 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-23 23:59:26,818 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:59:26,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:59:26,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1180312941, now seen corresponding path program 1 times [2019-11-23 23:59:26,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:59:26,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721912712] [2019-11-23 23:59:26,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:59:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:59:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:59:27,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721912712] [2019-11-23 23:59:27,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656481322] [2019-11-23 23:59:27,816 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 23:59:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:59:27,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-23 23:59:27,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:59:28,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,039 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 23:59:28,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 23:59:28,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 23:59:28,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,072 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 23:59:28,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 23:59:28,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 23:59:28,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 23:59:28,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 23:59:28,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 23:59:28,103 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 23:59:28,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 23:59:28,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:59:28,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 23:59:28,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 23:59:28,154 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 23:59:28,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms