/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/reducercommutativity/sum05-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:40:25,558 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-07 04:40:25,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:40:25,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:40:25,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:40:25,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:40:25,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:40:25,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:40:25,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:40:25,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:40:25,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:40:25,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:40:25,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:40:25,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:40:25,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:40:25,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:40:25,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:40:25,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:40:25,612 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 04:40:25,626 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:40:25,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:40:25,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:40:25,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:40:25,628 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:40:25,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:40:25,629 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:40:25,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:40:25,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:40:25,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:40:25,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:40:25,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:40:25,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:40:25,630 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:40:25,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:40:25,630 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:40:25,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:40:25,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:40:25,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:40:25,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:40:25,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:40:25,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:40:25,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:40:25,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:40:25,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:40:25,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:40:25,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:40:25,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:40:25,633 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 04:40:25,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:40:25,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:40:25,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:40:25,999 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:40:25,999 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:40:26,000 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum05-2.i [2019-11-07 04:40:26,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1aa7decb/95ad66c9351540a9beb00a1656a42d83/FLAG6f6032b7f [2019-11-07 04:40:26,549 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:40:26,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum05-2.i [2019-11-07 04:40:26,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1aa7decb/95ad66c9351540a9beb00a1656a42d83/FLAG6f6032b7f [2019-11-07 04:40:26,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1aa7decb/95ad66c9351540a9beb00a1656a42d83 [2019-11-07 04:40:26,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:40:26,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:40:26,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:40:26,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:40:26,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:40:26,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:40:26" (1/1) ... [2019-11-07 04:40:26,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d70bfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:26, skipping insertion in model container [2019-11-07 04:40:26,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:40:26" (1/1) ... [2019-11-07 04:40:26,925 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:40:26,946 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:40:27,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:40:27,184 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:40:27,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:40:27,225 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:40:27,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:27 WrapperNode [2019-11-07 04:40:27,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:40:27,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:40:27,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:40:27,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:40:27,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:27" (1/1) ... [2019-11-07 04:40:27,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:27" (1/1) ... [2019-11-07 04:40:27,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:27" (1/1) ... [2019-11-07 04:40:27,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:27" (1/1) ... [2019-11-07 04:40:27,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:27" (1/1) ... [2019-11-07 04:40:27,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:27" (1/1) ... [2019-11-07 04:40:27,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:27" (1/1) ... [2019-11-07 04:40:27,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:40:27,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:40:27,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:40:27,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:40:27,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:27" (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 04:40:27,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:40:27,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:40:27,404 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-11-07 04:40:27,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:40:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:40:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:40:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-11-07 04:40:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:40:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:40:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:40:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:40:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:40:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:40:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:40:27,788 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:40:27,789 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 04:40:27,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:40:27 BoogieIcfgContainer [2019-11-07 04:40:27,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:40:27,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:40:27,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:40:27,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:40:27,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:40:26" (1/3) ... [2019-11-07 04:40:27,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc0494b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:40:27, skipping insertion in model container [2019-11-07 04:40:27,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:27" (2/3) ... [2019-11-07 04:40:27,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc0494b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:40:27, skipping insertion in model container [2019-11-07 04:40:27,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:40:27" (3/3) ... [2019-11-07 04:40:27,802 INFO L109 eAbstractionObserver]: Analyzing ICFG sum05-2.i [2019-11-07 04:40:27,809 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:40:27,816 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:40:27,828 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:40:27,850 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:40:27,850 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:40:27,850 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:40:27,850 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:40:27,851 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:40:27,851 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:40:27,851 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:40:27,851 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:40:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-07 04:40:27,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-07 04:40:27,871 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:40:27,872 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 04:40:27,873 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:40:27,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:40:27,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1818423299, now seen corresponding path program 1 times [2019-11-07 04:40:27,886 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:40:27,886 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437845373] [2019-11-07 04:40:27,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:40:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:28,062 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 04:40:28,063 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437845373] [2019-11-07 04:40:28,064 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:40:28,064 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:40:28,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665890106] [2019-11-07 04:40:28,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:40:28,071 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:40:28,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:40:28,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:40:28,088 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-11-07 04:40:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:40:28,123 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-11-07 04:40:28,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:40:28,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-07 04:40:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:40:28,134 INFO L225 Difference]: With dead ends: 41 [2019-11-07 04:40:28,134 INFO L226 Difference]: Without dead ends: 20 [2019-11-07 04:40:28,137 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 04:40:28,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-07 04:40:28,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-07 04:40:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-07 04:40:28,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-07 04:40:28,176 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-11-07 04:40:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:40:28,176 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-07 04:40:28,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:40:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-07 04:40:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 04:40:28,179 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:40:28,179 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 04:40:28,180 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:40:28,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:40:28,180 INFO L82 PathProgramCache]: Analyzing trace with hash -2093950433, now seen corresponding path program 1 times [2019-11-07 04:40:28,181 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:40:28,181 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854746982] [2019-11-07 04:40:28,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:40:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:28,265 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 04:40:28,265 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854746982] [2019-11-07 04:40:28,266 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541966935] [2019-11-07 04:40:28,266 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 04:40:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:28,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:40:28,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:40:28,400 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 04:40:28,400 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:40:28,459 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 04:40:28,461 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:40:28,461 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-11-07 04:40:28,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844386219] [2019-11-07 04:40:28,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:40:28,464 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:40:28,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:40:28,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:40:28,465 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-11-07 04:40:28,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:40:28,480 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-11-07 04:40:28,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:40:28,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-07 04:40:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:40:28,483 INFO L225 Difference]: With dead ends: 33 [2019-11-07 04:40:28,483 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 04:40:28,486 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 04:40:28,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 04:40:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-07 04:40:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-07 04:40:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-07 04:40:28,494 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-11-07 04:40:28,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:40:28,494 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-07 04:40:28,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:40:28,495 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-07 04:40:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-07 04:40:28,496 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:40:28,496 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 04:40:28,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:40:28,701 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:40:28,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:40:28,702 INFO L82 PathProgramCache]: Analyzing trace with hash 903502258, now seen corresponding path program 1 times [2019-11-07 04:40:28,702 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:40:28,702 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782580326] [2019-11-07 04:40:28,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:40:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:28,839 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 04:40:28,840 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782580326] [2019-11-07 04:40:28,840 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:40:28,840 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:40:28,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786056321] [2019-11-07 04:40:28,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:40:28,841 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:40:28,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:40:28,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:40:28,842 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-11-07 04:40:28,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:40:28,852 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-11-07 04:40:28,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:40:28,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-07 04:40:28,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:40:28,855 INFO L225 Difference]: With dead ends: 31 [2019-11-07 04:40:28,855 INFO L226 Difference]: Without dead ends: 22 [2019-11-07 04:40:28,855 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 04:40:28,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-07 04:40:28,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-07 04:40:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-07 04:40:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-07 04:40:28,862 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-11-07 04:40:28,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:40:28,864 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-07 04:40:28,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:40:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-07 04:40:28,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-07 04:40:28,865 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:40:28,865 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 04:40:28,866 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:40:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:40:28,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2130547361, now seen corresponding path program 1 times [2019-11-07 04:40:28,867 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:40:28,867 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604856431] [2019-11-07 04:40:28,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:40:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:28,965 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 04:40:28,966 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604856431] [2019-11-07 04:40:28,967 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3173143] [2019-11-07 04:40:28,967 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 04:40:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:29,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:40:29,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:40:29,056 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 04:40:29,056 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:40:29,128 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 04:40:29,128 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [797575385] [2019-11-07 04:40:29,164 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-07 04:40:29,164 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:40:29,171 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:40:29,178 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:40:29,178 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:40:29,347 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-11-07 04:40:29,930 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 1 for LOIs [2019-11-07 04:40:29,959 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 04:40:29,961 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:40:31,215 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:40:31,216 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 15] total 21 [2019-11-07 04:40:31,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082254721] [2019-11-07 04:40:31,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-07 04:40:31,218 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:40:31,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-07 04:40:31,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2019-11-07 04:40:31,220 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 21 states. [2019-11-07 04:40:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:40:32,108 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-11-07 04:40:32,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-07 04:40:32,110 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 29 [2019-11-07 04:40:32,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:40:32,111 INFO L225 Difference]: With dead ends: 40 [2019-11-07 04:40:32,111 INFO L226 Difference]: Without dead ends: 25 [2019-11-07 04:40:32,112 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 04:40:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-07 04:40:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-07 04:40:32,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-07 04:40:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-11-07 04:40:32,120 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 29 [2019-11-07 04:40:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:40:32,120 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-11-07 04:40:32,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-07 04:40:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-07 04:40:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 04:40:32,122 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:40:32,122 INFO L410 BasicCegarLoop]: trace histogram [4, 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 04:40:32,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:40:32,326 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:40:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:40:32,327 INFO L82 PathProgramCache]: Analyzing trace with hash 356639231, now seen corresponding path program 2 times [2019-11-07 04:40:32,327 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:40:32,327 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259676521] [2019-11-07 04:40:32,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:40:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 04:40:32,448 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259676521] [2019-11-07 04:40:32,448 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591639774] [2019-11-07 04:40:32,449 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:40:32,499 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 04:40:32,499 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 04:40:32,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:40:32,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:40:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 04:40:32,520 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:40:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 04:40:32,551 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646424428] [2019-11-07 04:40:32,553 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-07 04:40:32,553 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:40:32,554 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:40:32,554 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:40:32,554 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:40:32,573 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-11-07 04:40:32,890 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 1 for LOIs [2019-11-07 04:40:32,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 04:40:32,924 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:40:35,755 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:40:35,756 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4, 15] total 25 [2019-11-07 04:40:35,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938556078] [2019-11-07 04:40:35,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-07 04:40:35,758 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:40:35,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-07 04:40:35,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=524, Unknown=1, NotChecked=0, Total=600 [2019-11-07 04:40:35,759 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 25 states. [2019-11-07 04:40:37,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:40:37,109 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2019-11-07 04:40:37,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-07 04:40:37,110 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2019-11-07 04:40:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:40:37,111 INFO L225 Difference]: With dead ends: 44 [2019-11-07 04:40:37,111 INFO L226 Difference]: Without dead ends: 29 [2019-11-07 04:40:37,113 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=247, Invalid=1732, Unknown=1, NotChecked=0, Total=1980 [2019-11-07 04:40:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-07 04:40:37,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-07 04:40:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-07 04:40:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-11-07 04:40:37,120 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 32 [2019-11-07 04:40:37,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:40:37,121 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-11-07 04:40:37,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-07 04:40:37,121 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-11-07 04:40:37,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-07 04:40:37,122 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:40:37,122 INFO L410 BasicCegarLoop]: trace histogram [12, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:40:37,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:40:37,326 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:40:37,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:40:37,327 INFO L82 PathProgramCache]: Analyzing trace with hash 906031436, now seen corresponding path program 3 times [2019-11-07 04:40:37,327 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:40:37,327 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575031871] [2019-11-07 04:40:37,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:40:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 26 proven. 36 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-07 04:40:37,489 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575031871] [2019-11-07 04:40:37,489 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845603234] [2019-11-07 04:40:37,490 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:40:37,564 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 04:40:37,565 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 04:40:37,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 04:40:37,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:40:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-07 04:40:37,577 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:40:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-07 04:40:37,619 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [732030357] [2019-11-07 04:40:37,620 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-07 04:40:37,620 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:40:37,621 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:40:37,621 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:40:37,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:40:37,637 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-11-07 04:40:37,953 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 1 for LOIs [2019-11-07 04:40:37,987 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 04:40:37,989 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:40:38,860 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:40:38,860 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 15] total 22 [2019-11-07 04:40:38,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018686527] [2019-11-07 04:40:38,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-07 04:40:38,862 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:40:38,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-07 04:40:38,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:40:38,863 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 22 states. [2019-11-07 04:40:39,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:40:39,864 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2019-11-07 04:40:39,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-07 04:40:39,865 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2019-11-07 04:40:39,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:40:39,866 INFO L225 Difference]: With dead ends: 47 [2019-11-07 04:40:39,866 INFO L226 Difference]: Without dead ends: 30 [2019-11-07 04:40:39,869 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 107 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 04:40:39,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-07 04:40:39,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-07 04:40:39,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-07 04:40:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-11-07 04:40:39,876 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 42 [2019-11-07 04:40:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:40:39,876 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-11-07 04:40:39,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-07 04:40:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-11-07 04:40:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-07 04:40:39,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:40:39,878 INFO L410 BasicCegarLoop]: trace histogram [15, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:40:40,082 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:40:40,083 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:40:40,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:40:40,083 INFO L82 PathProgramCache]: Analyzing trace with hash 886327137, now seen corresponding path program 4 times [2019-11-07 04:40:40,084 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:40:40,084 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715169389] [2019-11-07 04:40:40,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:40:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-11-07 04:40:40,237 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715169389] [2019-11-07 04:40:40,237 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534615569] [2019-11-07 04:40:40,237 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:40:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:40,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:40:40,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:40:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-11-07 04:40:40,364 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:40:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-11-07 04:40:40,391 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1793818053] [2019-11-07 04:40:40,393 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-07 04:40:40,394 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:40:40,394 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:40:40,395 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:40:40,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:40:40,419 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-11-07 04:40:40,691 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 1 for LOIs [2019-11-07 04:40:40,708 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 04:40:40,709 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:40:43,227 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:40:43,228 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 15] total 21 [2019-11-07 04:40:43,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663954267] [2019-11-07 04:40:43,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-07 04:40:43,229 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:40:43,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-07 04:40:43,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=358, Unknown=1, NotChecked=0, Total=420 [2019-11-07 04:40:43,230 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 21 states. [2019-11-07 04:40:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:40:46,157 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-11-07 04:40:46,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-07 04:40:46,157 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 45 [2019-11-07 04:40:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:40:46,159 INFO L225 Difference]: With dead ends: 46 [2019-11-07 04:40:46,159 INFO L226 Difference]: Without dead ends: 33 [2019-11-07 04:40:46,160 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=178, Invalid=1081, Unknown=1, NotChecked=0, Total=1260 [2019-11-07 04:40:46,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-07 04:40:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-07 04:40:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-07 04:40:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-07 04:40:46,167 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 45 [2019-11-07 04:40:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:40:46,167 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-07 04:40:46,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-07 04:40:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-07 04:40:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-07 04:40:46,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:40:46,169 INFO L410 BasicCegarLoop]: trace histogram [15, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:40:46,378 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:40:46,379 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:40:46,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:40:46,379 INFO L82 PathProgramCache]: Analyzing trace with hash -81363278, now seen corresponding path program 5 times [2019-11-07 04:40:46,379 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:40:46,380 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805340701] [2019-11-07 04:40:46,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:40:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:40:48,718 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-11-07 04:40:49,105 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 52 [2019-11-07 04:40:53,829 WARN L191 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 87 DAG size of output: 42 [2019-11-07 04:41:05,587 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 70 DAG size of output: 31 [2019-11-07 04:41:07,619 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_main_~#x~0.offset| 0))) (and (let ((.cse3 (<= 1 |c_main_~#x~0.offset|)) (.cse18 (<= 8 |c_main_~#x~0.offset|)) (.cse19 (<= (+ |c_main_~#x~0.offset| 1) 0))) (or (<= 4 |c_main_~#x~0.offset|) (and .cse0 (= c_main_~i~2 0) (let ((.cse1 (* 4 c_main_~i~2))) (let ((.cse2 (<= 12 |c_main_~#x~0.offset|)) (.cse6 (+ .cse1 |c_main_~#x~0.offset|))) (or (<= (+ .cse1 |c_main_~#x~0.offset| 1) 0) (<= (+ c_main_~i~2 1) 0) .cse2 (<= 16 |c_main_~#x~0.offset|) .cse3 (not (= 0 |c_main_~#x~0.offset|)) (let ((.cse4 (= .cse1 0)) (.cse5 (= 16 .cse1))) (and .cse4 (or (not .cse5) (<= (+ |c_main_~#x~0.offset| 16) 0)) (or (not .cse4) (<= 8 .cse6) (<= 12 .cse6) (and (<= 0 |c_main_~#x~0.offset|) (or .cse2 .cse3 (let ((.cse7 (= c_main_~ret~1 c_main_~ret2~0))) (and .cse7 (let ((.cse16 (select |c_#memory_int| |c_main_~#x~0.base|)) (.cse17 (* c_main_~i~2 4))) (let ((.cse11 (select .cse16 (+ .cse17 |c_main_~#x~0.offset| 4)))) (let ((.cse15 (store .cse16 (+ .cse17 |c_main_~#x~0.offset|) .cse11))) (let ((.cse12 (select .cse15 (+ |c_main_~#x~0.offset| 8))) (.cse13 (select .cse15 16)) (.cse14 (select .cse15 (+ |c_main_~#x~0.offset| 12)))) (let ((.cse9 (+ .cse11 .cse12 .cse13 .cse14 c_main_~temp~0))) (let ((.cse10 (* 4294967296 (div .cse9 4294967296)))) (or (let ((.cse8 (* 4294967296 (div (+ .cse11 .cse12 .cse13 .cse14 c_main_~temp~0 2147483648) 4294967296)))) (and (or (= (+ c_main_~ret~1 .cse8) .cse9) (< .cse8 .cse10)) .cse7 (<= .cse8 .cse9) (<= .cse8 .cse10))) (and (<= .cse9 (+ (* 4294967296 (div (+ .cse11 .cse12 .cse13 .cse14 c_main_~temp~0 (- 2147483648)) 4294967296)) 4294967295)) (= (+ .cse10 c_main_~ret~1 4294967296) .cse9))))))))))) .cse18 .cse19 (<= 16 .cse6)))) (= 0 .cse1) (or (= 0 .cse6) .cse5))) (<= 1 c_main_~i~2) (<= 1 .cse6) .cse19)))) .cse3 .cse18 .cse19)) .cse0)) is different from false [2019-11-07 04:41:08,025 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 36