/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-crafted/mapavg3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:16:54,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:16:54,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:16:54,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 01:16:54,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:16:54,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:16:54,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:16:54,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:16:54,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:16:54,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:16:54,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:16:54,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:16:54,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:16:54,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:16:54,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:16:54,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:16:54,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:16:54,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:16:54,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:16:54,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:16:54,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 01:16:54,702 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:16:54,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:16:54,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:16:54,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:16:54,707 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:16:54,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:16:54,708 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:16:54,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:16:54,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:16:54,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:16:54,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:16:54,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:16:54,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:16:54,711 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:16:54,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:16:54,711 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:16:54,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:16:54,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:16:54,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:16:54,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:16:54,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:16:54,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:16:54,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:16:54,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:16:54,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:16:54,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:16:54,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:16:54,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:16:54,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 01:16:54,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:16:55,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:16:55,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:16:55,012 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:16:55,012 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:16:55,013 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg3.i [2019-11-07 01:16:55,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4bf6b289/3285f8fdc9eb44059707e9d6194a7d13/FLAG70e960833 [2019-11-07 01:16:55,586 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:16:55,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg3.i [2019-11-07 01:16:55,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4bf6b289/3285f8fdc9eb44059707e9d6194a7d13/FLAG70e960833 [2019-11-07 01:16:55,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4bf6b289/3285f8fdc9eb44059707e9d6194a7d13 [2019-11-07 01:16:55,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:16:55,983 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:16:55,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:16:55,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:16:55,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:16:55,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:55" (1/1) ... [2019-11-07 01:16:56,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d051243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56, skipping insertion in model container [2019-11-07 01:16:56,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:55" (1/1) ... [2019-11-07 01:16:56,033 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:16:56,057 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:16:56,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:16:56,246 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:16:56,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:16:56,371 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:16:56,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56 WrapperNode [2019-11-07 01:16:56,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:16:56,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:16:56,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:16:56,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:16:56,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:16:56,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:16:56,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:16:56,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:16:56,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (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 [2019-11-07 01:16:56,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:16:56,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:16:56,473 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2019-11-07 01:16:56,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:16:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:16:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:16:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2019-11-07 01:16:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:16:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:16:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 01:16:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:16:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:16:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:16:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:16:56,800 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:16:56,800 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 01:16:56,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:56 BoogieIcfgContainer [2019-11-07 01:16:56,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:16:56,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:16:56,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:16:56,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:16:56,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:16:55" (1/3) ... [2019-11-07 01:16:56,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a95875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:56, skipping insertion in model container [2019-11-07 01:16:56,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56" (2/3) ... [2019-11-07 01:16:56,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a95875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:56, skipping insertion in model container [2019-11-07 01:16:56,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:56" (3/3) ... [2019-11-07 01:16:56,811 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg3.i [2019-11-07 01:16:56,823 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:16:56,831 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:16:56,844 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:16:56,872 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:16:56,872 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:16:56,872 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:16:56,872 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:16:56,873 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:16:56,873 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:16:56,873 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:16:56,873 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:16:56,893 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-07 01:16:56,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-07 01:16:56,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:56,903 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:56,905 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:56,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:56,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1953355565, now seen corresponding path program 1 times [2019-11-07 01:16:56,923 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:56,923 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363423082] [2019-11-07 01:16:56,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:16:57,108 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363423082] [2019-11-07 01:16:57,109 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:16:57,109 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:16:57,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166546834] [2019-11-07 01:16:57,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:16:57,114 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:57,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:16:57,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:16:57,127 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-11-07 01:16:57,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:57,164 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-11-07 01:16:57,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:16:57,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-07 01:16:57,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:57,180 INFO L225 Difference]: With dead ends: 41 [2019-11-07 01:16:57,180 INFO L226 Difference]: Without dead ends: 20 [2019-11-07 01:16:57,185 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:16:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-07 01:16:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-07 01:16:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-07 01:16:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-07 01:16:57,226 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-11-07 01:16:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:57,227 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-07 01:16:57,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:16:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-07 01:16:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 01:16:57,229 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:57,230 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:57,230 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:57,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1072677037, now seen corresponding path program 1 times [2019-11-07 01:16:57,231 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:57,231 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648422280] [2019-11-07 01:16:57,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 01:16:57,353 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648422280] [2019-11-07 01:16:57,355 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054213694] [2019-11-07 01:16:57,356 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 [2019-11-07 01:16:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:57,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 01:16:57,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:16:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 01:16:57,515 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:16:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 01:16:57,553 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 01:16:57,553 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-11-07 01:16:57,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848505691] [2019-11-07 01:16:57,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:16:57,556 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:57,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:16:57,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:16:57,557 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-11-07 01:16:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:57,570 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-11-07 01:16:57,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:16:57,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-07 01:16:57,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:57,572 INFO L225 Difference]: With dead ends: 33 [2019-11-07 01:16:57,572 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 01:16:57,574 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:16:57,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 01:16:57,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-07 01:16:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-07 01:16:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-07 01:16:57,580 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-11-07 01:16:57,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:57,580 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-07 01:16:57,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:16:57,581 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-07 01:16:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-07 01:16:57,582 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:57,582 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:57,786 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:16:57,786 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:57,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:57,787 INFO L82 PathProgramCache]: Analyzing trace with hash 608739335, now seen corresponding path program 1 times [2019-11-07 01:16:57,788 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:57,788 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518204542] [2019-11-07 01:16:57,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 01:16:57,912 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518204542] [2019-11-07 01:16:57,912 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:16:57,912 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:16:57,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924699574] [2019-11-07 01:16:57,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:16:57,914 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:57,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:16:57,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:16:57,915 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-11-07 01:16:57,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:57,944 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-11-07 01:16:57,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:16:57,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-07 01:16:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:57,948 INFO L225 Difference]: With dead ends: 31 [2019-11-07 01:16:57,948 INFO L226 Difference]: Without dead ends: 22 [2019-11-07 01:16:57,948 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:16:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-07 01:16:57,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-07 01:16:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-07 01:16:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-07 01:16:57,957 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-11-07 01:16:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:57,960 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-07 01:16:57,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:16:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-07 01:16:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-07 01:16:57,961 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:57,962 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:57,962 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash -824983385, now seen corresponding path program 1 times [2019-11-07 01:16:57,963 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:57,963 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113799772] [2019-11-07 01:16:57,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 01:16:58,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113799772] [2019-11-07 01:16:58,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184010238] [2019-11-07 01:16:58,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:16:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 01:16:58,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:16:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 01:16:58,157 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:16:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 01:16:58,202 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1601280351] [2019-11-07 01:16:58,235 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-07 01:16:58,235 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:16:58,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:16:58,247 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:16:58,248 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:16:58,359 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-11-07 01:17:02,870 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 1 for LOIs [2019-11-07 01:17:02,893 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 01:17:02,895 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 01:17:29,422 WARN L191 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 100 DAG size of output: 53 [2019-11-07 01:17:33,599 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 01:17:33,600 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 13] total 19 [2019-11-07 01:17:33,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517455804] [2019-11-07 01:17:33,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 01:17:33,601 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:17:33,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 01:17:33,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=281, Unknown=10, NotChecked=0, Total=342 [2019-11-07 01:17:33,603 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 19 states.