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-tiling/pnr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:38:09,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:38:09,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:38:09,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:38:09,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:38:09,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:38:09,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:38:09,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:38:09,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:38:09,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:38:09,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:38:09,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:38:09,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:38:09,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:38:09,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:38:09,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:38:09,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:38:09,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:38:09,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:38:09,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:38:09,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:38:09,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:38:09,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:38:09,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:38:09,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:38:09,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:38:09,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:38:09,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:38:09,391 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 [2019-10-15 01:38:09,418 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:38:09,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:38:09,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:38:09,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:38:09,420 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:38:09,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:38:09,420 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:38:09,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:38:09,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:38:09,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:38:09,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:38:09,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:38:09,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:38:09,422 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:38:09,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:38:09,423 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:38:09,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:38:09,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:38:09,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:38:09,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:38:09,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:38:09,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:38:09,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:38:09,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:38:09,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:38:09,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:38:09,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:38:09,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:38:09,427 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 [2019-10-15 01:38:09,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:38:09,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:38:09,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:38:09,728 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:38:09,729 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:38:09,730 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pnr4.c [2019-10-15 01:38:09,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef78e61e/032fdc24fa2b4ed1937382040bf38c20/FLAG2bb91231e [2019-10-15 01:38:10,300 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:38:10,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pnr4.c [2019-10-15 01:38:10,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef78e61e/032fdc24fa2b4ed1937382040bf38c20/FLAG2bb91231e [2019-10-15 01:38:10,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef78e61e/032fdc24fa2b4ed1937382040bf38c20 [2019-10-15 01:38:10,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:38:10,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:38:10,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:38:10,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:38:10,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:38:10,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:38:10" (1/1) ... [2019-10-15 01:38:10,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7492c7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:10, skipping insertion in model container [2019-10-15 01:38:10,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:38:10" (1/1) ... [2019-10-15 01:38:10,707 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:38:10,727 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:38:10,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:38:10,936 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:38:11,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:38:11,070 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:38:11,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:11 WrapperNode [2019-10-15 01:38:11,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:38:11,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:38:11,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:38:11,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:38:11,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:11" (1/1) ... [2019-10-15 01:38:11,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:11" (1/1) ... [2019-10-15 01:38:11,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:11" (1/1) ... [2019-10-15 01:38:11,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:11" (1/1) ... [2019-10-15 01:38:11,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:11" (1/1) ... [2019-10-15 01:38:11,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:11" (1/1) ... [2019-10-15 01:38:11,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:11" (1/1) ... [2019-10-15 01:38:11,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:38:11,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:38:11,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:38:11,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:38:11,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:11" (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 [2019-10-15 01:38:11,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:38:11,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:38:11,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:38:11,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2019-10-15 01:38:11,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:38:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:38:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:38:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:38:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:38:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:38:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2019-10-15 01:38:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:38:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:38:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:38:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:38:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:38:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:38:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:38:11,654 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:38:11,655 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:38:11,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:38:11 BoogieIcfgContainer [2019-10-15 01:38:11,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:38:11,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:38:11,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:38:11,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:38:11,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:38:10" (1/3) ... [2019-10-15 01:38:11,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a22acfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:38:11, skipping insertion in model container [2019-10-15 01:38:11,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:11" (2/3) ... [2019-10-15 01:38:11,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a22acfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:38:11, skipping insertion in model container [2019-10-15 01:38:11,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:38:11" (3/3) ... [2019-10-15 01:38:11,667 INFO L109 eAbstractionObserver]: Analyzing ICFG pnr4.c [2019-10-15 01:38:11,677 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:38:11,688 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:38:11,700 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:38:11,735 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:38:11,735 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:38:11,736 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:38:11,736 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:38:11,736 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:38:11,736 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:38:11,736 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:38:11,736 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:38:11,752 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-15 01:38:11,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:38:11,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:38:11,760 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:38:11,762 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:38:11,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:38:11,769 INFO L82 PathProgramCache]: Analyzing trace with hash 720156378, now seen corresponding path program 1 times [2019-10-15 01:38:11,779 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:38:11,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836574502] [2019-10-15 01:38:11,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:38:11,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:38:11,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:38:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:38:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:38:12,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836574502] [2019-10-15 01:38:12,081 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:38:12,082 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:38:12,082 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752077563] [2019-10-15 01:38:12,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:38:12,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:38:12,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:38:12,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:38:12,108 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2019-10-15 01:38:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:38:12,271 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2019-10-15 01:38:12,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:38:12,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-15 01:38:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:38:12,283 INFO L225 Difference]: With dead ends: 60 [2019-10-15 01:38:12,284 INFO L226 Difference]: Without dead ends: 36 [2019-10-15 01:38:12,287 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:38:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-15 01:38:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-10-15 01:38:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-15 01:38:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-10-15 01:38:12,340 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2019-10-15 01:38:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:38:12,340 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-10-15 01:38:12,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:38:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-10-15 01:38:12,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 01:38:12,343 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:38:12,343 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:38:12,343 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:38:12,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:38:12,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1475243858, now seen corresponding path program 1 times [2019-10-15 01:38:12,344 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:38:12,345 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065399036] [2019-10-15 01:38:12,345 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:38:12,345 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:38:12,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:38:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:38:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:38:13,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065399036] [2019-10-15 01:38:13,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609774933] [2019-10-15 01:38:13,016 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 [2019-10-15 01:38:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:38:13,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 01:38:13,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:38:13,226 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2019-10-15 01:38:13,227 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:13,258 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:13,268 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2019-10-15 01:38:13,269 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:13,298 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:13,299 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-15 01:38:13,299 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:46 [2019-10-15 01:38:13,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:13,379 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,388 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2019-10-15 01:38:13,389 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:13,399 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,403 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2019-10-15 01:38:13,404 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:13,435 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:13,437 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-15 01:38:13,438 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:83, output treesize:72 [2019-10-15 01:38:13,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:13,508 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,510 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,512 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,524 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-10-15 01:38:13,525 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:13,531 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,533 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,535 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,540 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 58 [2019-10-15 01:38:13,542 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:13,581 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:13,582 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-15 01:38:13,583 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:109, output treesize:98 [2019-10-15 01:38:13,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:13,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,671 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,672 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,674 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,676 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,677 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,699 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 53 [2019-10-15 01:38:13,700 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:13,717 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,721 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,726 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,728 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,730 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:13,741 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2019-10-15 01:38:13,745 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:13,790 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:13,793 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-15 01:38:13,794 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:98, output treesize:84 [2019-10-15 01:38:13,936 INFO L341 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2019-10-15 01:38:13,937 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 20 [2019-10-15 01:38:13,938 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:13,943 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:13,943 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:38:13,944 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:8 [2019-10-15 01:38:13,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:38:14,019 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:38:14,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:14,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:14,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:14,190 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:14,204 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2019-10-15 01:38:14,213 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2019-10-15 01:38:14,213 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-10-15 01:38:14,228 INFO L567 ElimStorePlain]: treesize reduction 15, result has 44.4 percent of original size [2019-10-15 01:38:14,229 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:38:14,238 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:14,241 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2019-10-15 01:38:14,247 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2019-10-15 01:38:14,248 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2019-10-15 01:38:14,264 INFO L567 ElimStorePlain]: treesize reduction 10, result has 56.5 percent of original size [2019-10-15 01:38:14,264 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-10-15 01:38:14,273 INFO L567 ElimStorePlain]: treesize reduction 12, result has 52.0 percent of original size [2019-10-15 01:38:14,274 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-10-15 01:38:14,274 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:37, output treesize:13 [2019-10-15 01:38:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:38:14,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2137705344] [2019-10-15 01:38:14,379 INFO L162 IcfgInterpreter]: Started Sifa with 24 locations of interest [2019-10-15 01:38:14,380 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:38:14,389 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:38:14,398 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:38:14,398 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:38:14,548 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 30 for LOIs [2019-10-15 01:38:14,853 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:14,989 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:36,291 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 168 for LOIs [2019-10-15 01:38:36,298 INFO L199 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 1 for LOIs [2019-10-15 01:38:36,300 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 16 for LOIs [2019-10-15 01:38:36,303 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 01:38:36,870 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-10-15 01:38:37,758 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-10-15 01:38:38,128 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-10-15 01:38:38,938 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 01:38:38,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9, 19] total 42 [2019-10-15 01:38:38,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828292670] [2019-10-15 01:38:38,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-10-15 01:38:38,942 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:38:38,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-10-15 01:38:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:38:38,944 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 42 states. [2019-10-15 01:38:39,298 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-10-15 01:38:39,610 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-10-15 01:38:40,249 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2019-10-15 01:38:40,612 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2019-10-15 01:38:40,999 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2019-10-15 01:38:41,183 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-10-15 01:38:41,927 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 173 [2019-10-15 01:38:42,265 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2019-10-15 01:38:42,490 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-10-15 01:38:42,746 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-10-15 01:38:43,073 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-10-15 01:38:43,433 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2019-10-15 01:38:43,721 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-10-15 01:38:44,279 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-10-15 01:38:44,589 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69