/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/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:27:29,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:27:29,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:27:29,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 04:27:29,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:27:29,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:27:29,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:27:29,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:27:29,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:27:29,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:27:29,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:27:29,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:27:29,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:27:29,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:27:29,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:27:29,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:27:29,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:27:29,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:27:29,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:27:29,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:27:29,805 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 04:27:29,829 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:27:29,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:27:29,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:27:29,830 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:27:29,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:27:29,831 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:27:29,831 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:27:29,831 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:27:29,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:27:29,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:27:29,833 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:27:29,833 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:27:29,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:27:29,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:27:29,834 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:27:29,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:27:29,835 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:27:29,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:27:29,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:27:29,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:27:29,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:27:29,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:27:29,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:27:29,837 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:27:29,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:27:29,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:27:29,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:27:29,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:27:29,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:27:29,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:27:29,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:27:29,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:27:29,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:27:29,840 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:27:29,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:27:29,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:27:29,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:27:29,841 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:27:30,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:27:30,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:27:30,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:27:30,114 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:27:30,114 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:27:30,115 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2019-11-24 04:27:30,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c877b60e/d0455c82e5764f5f8384cb769e554eb2/FLAGe7d7ea0fa [2019-11-24 04:27:30,632 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:27:30,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2019-11-24 04:27:30,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c877b60e/d0455c82e5764f5f8384cb769e554eb2/FLAGe7d7ea0fa [2019-11-24 04:27:31,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c877b60e/d0455c82e5764f5f8384cb769e554eb2 [2019-11-24 04:27:31,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:27:31,040 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:27:31,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:27:31,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:27:31,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:27:31,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667133cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31, skipping insertion in model container [2019-11-24 04:27:31,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:27:31,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:27:31,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:27:31,254 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:27:31,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:27:31,289 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:27:31,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31 WrapperNode [2019-11-24 04:27:31,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:27:31,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:27:31,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:27:31,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:27:31,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:27:31,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:27:31,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:27:31,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:27:31,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (1/1) ... [2019-11-24 04:27:31,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:27:31,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:27:31,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:27:31,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:27:31,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (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 04:27:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:27:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:27:31,684 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:27:31,685 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 04:27:31,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:27:31 BoogieIcfgContainer [2019-11-24 04:27:31,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:27:31,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:27:31,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:27:31,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:27:31,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:27:31" (1/3) ... [2019-11-24 04:27:31,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a8b879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:27:31, skipping insertion in model container [2019-11-24 04:27:31,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:31" (2/3) ... [2019-11-24 04:27:31,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a8b879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:27:31, skipping insertion in model container [2019-11-24 04:27:31,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:27:31" (3/3) ... [2019-11-24 04:27:31,704 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2019-11-24 04:27:31,716 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:27:31,734 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:27:31,760 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:27:31,792 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:27:31,792 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:27:31,793 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:27:31,793 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:27:31,793 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:27:31,793 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:27:31,793 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:27:31,793 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:27:31,804 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-24 04:27:31,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 04:27:31,808 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:31,809 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 04:27:31,809 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:31,815 INFO L82 PathProgramCache]: Analyzing trace with hash 29767713, now seen corresponding path program 1 times [2019-11-24 04:27:31,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:31,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488905788] [2019-11-24 04:27:31,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:31,982 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 04:27:31,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488905788] [2019-11-24 04:27:31,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:27:31,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:27:31,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065989281] [2019-11-24 04:27:31,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:27:31,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:27:32,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:27:32,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:27:32,013 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2019-11-24 04:27:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:27:32,098 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-11-24 04:27:32,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:27:32,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-24 04:27:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:27:32,110 INFO L225 Difference]: With dead ends: 18 [2019-11-24 04:27:32,110 INFO L226 Difference]: Without dead ends: 7 [2019-11-24 04:27:32,116 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:27:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-24 04:27:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-24 04:27:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-24 04:27:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-24 04:27:32,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-24 04:27:32,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:27:32,148 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-24 04:27:32,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:27:32,148 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-24 04:27:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:27:32,149 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:32,149 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:27:32,149 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:32,150 INFO L82 PathProgramCache]: Analyzing trace with hash 922723147, now seen corresponding path program 1 times [2019-11-24 04:27:32,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:32,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490959277] [2019-11-24 04:27:32,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:32,286 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 04:27:32,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490959277] [2019-11-24 04:27:32,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124427633] [2019-11-24 04:27:32,288 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 04:27:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:32,320 WARN L253 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-24 04:27:32,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:27:32,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:27:32,450 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 04:27:32,451 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:27:32,567 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 04:27:32,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1305079093] [2019-11-24 04:27:32,624 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-11-24 04:27:32,624 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:27:32,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:27:32,643 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:27:32,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:27:34,457 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 275 [2019-11-24 04:27:34,948 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 314 [2019-11-24 04:27:35,239 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 380 DAG size of output: 360 [2019-11-24 04:27:35,420 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 359 [2019-11-24 04:27:35,644 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 431 DAG size of output: 410 [2019-11-24 04:27:35,893 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 408 DAG size of output: 406 [2019-11-24 04:27:36,213 WARN L192 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 496 DAG size of output: 474 [2019-11-24 04:27:36,564 WARN L192 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 470 DAG size of output: 467 [2019-11-24 04:27:36,913 WARN L192 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 559 DAG size of output: 538 [2019-11-24 04:27:37,442 WARN L192 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 534 DAG size of output: 532 [2019-11-24 04:27:37,887 WARN L192 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 641 DAG size of output: 621 [2019-11-24 04:27:38,386 WARN L192 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 612 [2019-11-24 04:27:39,050 WARN L192 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 734 DAG size of output: 709 [2019-11-24 04:27:39,765 WARN L192 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 710 DAG size of output: 707 [2019-11-24 04:27:40,510 WARN L192 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 711 [2019-11-24 04:27:41,156 WARN L192 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 712 DAG size of output: 711 [2019-11-24 04:27:41,919 WARN L192 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 716 [2019-11-24 04:27:42,577 WARN L192 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 717 DAG size of output: 716 [2019-11-24 04:27:43,936 WARN L192 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 720 [2019-11-24 04:27:44,585 WARN L192 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 721 DAG size of output: 720 [2019-11-24 04:27:45,311 WARN L192 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-11-24 04:27:45,939 WARN L192 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 726 DAG size of output: 725 [2019-11-24 04:27:46,606 WARN L192 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 729 [2019-11-24 04:27:47,231 WARN L192 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 730 DAG size of output: 729 [2019-11-24 04:27:47,923 WARN L192 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 734 [2019-11-24 04:27:48,566 WARN L192 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 735 DAG size of output: 735 [2019-11-24 04:27:49,527 WARN L192 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 893 DAG size of output: 873 [2019-11-24 04:27:50,546 WARN L192 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 870 DAG size of output: 857 [2019-11-24 04:27:51,977 WARN L192 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1038 DAG size of output: 1015 [2019-11-24 04:27:53,444 WARN L192 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1015 DAG size of output: 1005 [2019-11-24 04:27:55,042 WARN L192 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 1005 [2019-11-24 04:27:56,698 WARN L192 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 1006 DAG size of output: 1005 [2019-11-24 04:27:58,377 WARN L192 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 1010 [2019-11-24 04:27:59,947 WARN L192 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 1011 DAG size of output: 1010 [2019-11-24 04:28:01,540 WARN L192 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 1014 [2019-11-24 04:28:03,099 WARN L192 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 1015 DAG size of output: 1014 [2019-11-24 04:28:04,710 WARN L192 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 1019 [2019-11-24 04:28:06,386 WARN L192 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 1020 DAG size of output: 1019 [2019-11-24 04:28:07,996 WARN L192 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 1023 [2019-11-24 04:28:09,591 WARN L192 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 1024 DAG size of output: 1023 [2019-11-24 04:28:11,227 WARN L192 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 1028 [2019-11-24 04:28:12,832 WARN L192 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 1029 DAG size of output: 1028 [2019-11-24 04:28:14,468 WARN L192 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 1032 [2019-11-24 04:28:16,012 WARN L192 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 1033 DAG size of output: 1032 [2019-11-24 04:28:17,649 WARN L192 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 1037 [2019-11-24 04:28:19,237 WARN L192 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 1038 DAG size of output: 1037 [2019-11-24 04:28:20,804 WARN L192 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 1041 [2019-11-24 04:28:22,522 WARN L192 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 1042 DAG size of output: 1001 [2019-11-24 04:28:24,247 WARN L192 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 968 [2019-11-24 04:28:25,900 WARN L192 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 969 DAG size of output: 969 [2019-11-24 04:28:28,567 WARN L192 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 1187 DAG size of output: 1163 [2019-11-24 04:28:31,274 WARN L192 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 1164 DAG size of output: 1148 [2019-11-24 04:28:35,269 WARN L192 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 1411 DAG size of output: 1388 [2019-11-24 04:28:39,370 WARN L192 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 1384 DAG size of output: 1368 [2019-11-24 04:28:46,358 WARN L192 SmtUtils]: Spent 6.90 s on a formula simplification. DAG size of input: 1753 DAG size of output: 1729 [2019-11-24 04:28:53,752 WARN L192 SmtUtils]: Spent 7.27 s on a formula simplification. DAG size of input: 1725 DAG size of output: 1709 [2019-11-24 04:29:05,542 WARN L192 SmtUtils]: Spent 11.65 s on a formula simplification. DAG size of input: 2180 DAG size of output: 2155