/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/mapavg4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:16:55,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:16:55,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:16:55,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:16:55,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:16:55,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:16:55,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:16:55,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:16:55,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:16:55,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:16:55,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:16:55,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:16:55,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:16:55,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:16:55,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:16:55,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:16:55,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:16:55,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:16:55,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:16:55,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:16:55,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:16:55,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:16:55,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:16:55,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:16:55,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:16:55,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:16:55,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:16:55,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:16:55,350 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 01:16:55,377 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:16:55,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:16:55,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:16:55,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:16:55,380 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:16:55,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:16:55,381 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:16:55,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:16:55,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:16:55,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:16:55,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:16:55,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:16:55,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:16:55,383 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:16:55,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:16:55,384 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:16:55,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:16:55,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:16:55,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:16:55,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:16:55,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:16:55,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:16:55,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:16:55,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:16:55,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:16:55,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:16:55,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:16:55,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:16:55,387 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 01:16:55,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:16:55,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:16:55,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:16:55,702 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:16:55,703 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:16:55,703 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg4.i [2019-11-07 01:16:55,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab8d0bc7/5e61778a4bc64347adacb36300b7631e/FLAG5ad83b0c8 [2019-11-07 01:16:56,198 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:16:56,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg4.i [2019-11-07 01:16:56,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab8d0bc7/5e61778a4bc64347adacb36300b7631e/FLAG5ad83b0c8 [2019-11-07 01:16:56,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab8d0bc7/5e61778a4bc64347adacb36300b7631e [2019-11-07 01:16:56,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:16:56,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:16:56,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:16:56,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:16:56,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:16:56,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c96835 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 01:16:56,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,706 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:16:56,748 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:16:57,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:16:57,037 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:16:57,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:16:57,164 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:16:57,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57 WrapperNode [2019-11-07 01:16:57,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:16:57,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:16:57,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:16:57,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:16:57,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:16:57,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:16:57,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:16:57,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:16:57,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (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 01:16:57,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:16:57,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:16:57,260 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2019-11-07 01:16:57,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:16:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:16:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:16:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2019-11-07 01:16:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:16:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:16:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 01:16:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:16:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:16:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:16:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:16:57,672 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:16:57,673 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 01:16:57,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:57 BoogieIcfgContainer [2019-11-07 01:16:57,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:16:57,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:16:57,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:16:57,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:16:57,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:16:56" (1/3) ... [2019-11-07 01:16:57,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6465ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:57, skipping insertion in model container [2019-11-07 01:16:57,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (2/3) ... [2019-11-07 01:16:57,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6465ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:57, skipping insertion in model container [2019-11-07 01:16:57,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:57" (3/3) ... [2019-11-07 01:16:57,682 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg4.i [2019-11-07 01:16:57,692 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:16:57,699 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:16:57,710 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:16:57,734 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:16:57,734 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:16:57,734 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:16:57,734 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:16:57,734 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:16:57,734 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:16:57,735 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:16:57,735 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:16:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-07 01:16:57,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-07 01:16:57,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:57,756 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 01:16:57,758 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:57,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:57,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1953355565, now seen corresponding path program 1 times [2019-11-07 01:16:57,771 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:57,771 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361388233] [2019-11-07 01:16:57,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,007 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 01:16:58,008 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361388233] [2019-11-07 01:16:58,013 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:16:58,013 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:16:58,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968116033] [2019-11-07 01:16:58,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:16:58,022 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:58,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:16:58,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:16:58,042 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-11-07 01:16:58,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:58,086 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-11-07 01:16:58,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:16:58,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-07 01:16:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:58,099 INFO L225 Difference]: With dead ends: 41 [2019-11-07 01:16:58,099 INFO L226 Difference]: Without dead ends: 20 [2019-11-07 01:16:58,104 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 01:16:58,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-07 01:16:58,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-07 01:16:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-07 01:16:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-07 01:16:58,153 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-11-07 01:16:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:58,153 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-07 01:16:58,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:16:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-07 01:16:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 01:16:58,156 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:58,156 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 01:16:58,156 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1072677037, now seen corresponding path program 1 times [2019-11-07 01:16:58,157 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:58,158 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243346776] [2019-11-07 01:16:58,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,284 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 01:16:58,285 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243346776] [2019-11-07 01:16:58,285 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000878476] [2019-11-07 01:16:58,286 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 01:16:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 01:16:58,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:16:58,439 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 01:16:58,440 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:16:58,477 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 01:16:58,478 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 01:16:58,478 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-11-07 01:16:58,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634792230] [2019-11-07 01:16:58,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:16:58,480 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:58,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:16:58,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:16:58,481 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-11-07 01:16:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:58,492 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-11-07 01:16:58,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:16:58,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-07 01:16:58,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:58,494 INFO L225 Difference]: With dead ends: 33 [2019-11-07 01:16:58,494 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 01:16:58,495 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 01:16:58,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 01:16:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-07 01:16:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-07 01:16:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-07 01:16:58,502 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-11-07 01:16:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:58,502 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-07 01:16:58,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:16:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-07 01:16:58,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-07 01:16:58,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:58,504 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 01:16:58,708 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:16:58,708 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:58,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:58,710 INFO L82 PathProgramCache]: Analyzing trace with hash 608739335, now seen corresponding path program 1 times [2019-11-07 01:16:58,710 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:58,710 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319617956] [2019-11-07 01:16:58,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,798 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 01:16:58,798 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319617956] [2019-11-07 01:16:58,799 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:16:58,799 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:16:58,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570890586] [2019-11-07 01:16:58,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:16:58,803 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:58,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:16:58,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:16:58,804 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-11-07 01:16:58,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:58,829 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-11-07 01:16:58,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:16:58,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-07 01:16:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:58,831 INFO L225 Difference]: With dead ends: 31 [2019-11-07 01:16:58,831 INFO L226 Difference]: Without dead ends: 22 [2019-11-07 01:16:58,832 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 01:16:58,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-07 01:16:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-07 01:16:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-07 01:16:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-07 01:16:58,838 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-11-07 01:16:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:58,840 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-07 01:16:58,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:16:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-07 01:16:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-07 01:16:58,841 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:58,842 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 01:16:58,842 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:58,842 INFO L82 PathProgramCache]: Analyzing trace with hash -824983385, now seen corresponding path program 1 times [2019-11-07 01:16:58,843 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:58,843 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161360934] [2019-11-07 01:16:58,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,929 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 01:16:58,930 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161360934] [2019-11-07 01:16:58,930 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833992868] [2019-11-07 01:16:58,930 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 01:16:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:59,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 01:16:59,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:16:59,052 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 01:16:59,052 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:16:59,092 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 01:16:59,092 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [312985480] [2019-11-07 01:16:59,136 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-07 01:16:59,136 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:16:59,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:16:59,156 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:16:59,157 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:16:59,285 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-11-07 01:17:03,732 INFO L197 IcfgInterpreter]: Interpreting procedure mapavg with input of size 1 for LOIs [2019-11-07 01:17:03,755 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 01:17:03,759 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 01:17:08,132 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_23 Int) (v_mapavg_~ret~0_BEFORE_RETURN_3 Int)) (let ((.cse3 (+ |c_main_#t~ret7| 4294967296)) (.cse10 (mod (div v_mapavg_~ret~0_BEFORE_RETURN_3 100000) 4294967296))) (let ((.cse0 (< v_prenex_23 0)) (.cse2 (not (= 0 (mod v_prenex_23 100000)))) (.cse1 (mod (+ (div v_prenex_23 100000) 1) 4294967296)) (.cse5 (<= .cse10 2147483647)) (.cse8 (= 0 (mod v_mapavg_~ret~0_BEFORE_RETURN_3 100000))) (.cse6 (= |c_main_#t~ret7| .cse10)) (.cse4 (<= 0 v_mapavg_~ret~0_BEFORE_RETURN_3)) (.cse7 (< 2147483647 .cse10)) (.cse9 (= .cse3 .cse10))) (or (and .cse0 (<= .cse1 2147483647) .cse2 (= .cse1 |c_main_#t~ret7|)) (and .cse0 (< 2147483647 .cse1) .cse2 (= .cse1 .cse3)) (and .cse4 .cse5 .cse6) (and .cse7 .cse8 .cse9) (and .cse5 .cse8 .cse6) (and .cse4 .cse7 .cse9))))) (exists ((v_mapavg_~ret~0_BEFORE_RETURN_4 Int) (v_prenex_24 Int)) (let ((.cse14 (+ |c_main_#t~ret7| 4294967296)) (.cse21 (mod (div v_mapavg_~ret~0_BEFORE_RETURN_4 100000) 4294967296))) (let ((.cse11 (< v_prenex_24 0)) (.cse13 (not (= 0 (mod v_prenex_24 100000)))) (.cse12 (mod (+ (div v_prenex_24 100000) 1) 4294967296)) (.cse19 (= 0 (mod v_mapavg_~ret~0_BEFORE_RETURN_4 100000))) (.cse16 (< 2147483647 .cse21)) (.cse17 (= .cse21 .cse14)) (.cse15 (<= 0 v_mapavg_~ret~0_BEFORE_RETURN_4)) (.cse18 (<= .cse21 2147483647)) (.cse20 (= .cse21 |c_main_#t~ret7|))) (or (and .cse11 (= .cse12 |c_main_#t~ret7|) (<= .cse12 2147483647) .cse13) (and (< 2147483647 .cse12) .cse11 .cse13 (= .cse14 .cse12)) (and .cse15 .cse16 .cse17) (and .cse18 .cse19 .cse20) (and .cse19 .cse16 .cse17) (and .cse15 .cse18 .cse20)))))) is different from true [2019-11-07 01:17:10,303 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 01:17:10,303 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 13] total 19 [2019-11-07 01:17:10,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105637737] [2019-11-07 01:17:10,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 01:17:10,305 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:17:10,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 01:17:10,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=256, Unknown=3, NotChecked=32, Total=342 [2019-11-07 01:17:10,307 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 19 states. [2019-11-07 01:17:26,970 WARN L191 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 80 DAG size of output: 49