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/loops/eureka_01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:03:28,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:03:28,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:03:28,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:03:28,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:03:28,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:03:28,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:03:28,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:03:28,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:03:28,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:03:28,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:03:28,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:03:28,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:03:28,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:03:28,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:03:28,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:03:28,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:03:28,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:03:28,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:03:28,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:03:28,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:03:28,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:03:28,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:03:28,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:03:28,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:03:28,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:03:28,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:03:28,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:03:28,864 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 03:03:28,886 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:03:28,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:03:28,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:03:28,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:03:28,889 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:03:28,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:03:28,890 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:03:28,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:03:28,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:03:28,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:03:28,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:03:28,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:03:28,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:03:28,893 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:03:28,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:03:28,893 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:03:28,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:03:28,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:03:28,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:03:28,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:03:28,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:03:28,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:03:28,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:03:28,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:03:28,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:03:28,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:03:28,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:03:28,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:03:28,896 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 03:03:29,218 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:03:29,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:03:29,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:03:29,252 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:03:29,253 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:03:29,256 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01-2.c [2019-10-15 03:03:29,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b659b5925/32a4162adf154299a2e283426378c608/FLAG783582b0a [2019-10-15 03:03:29,836 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:03:29,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c [2019-10-15 03:03:29,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b659b5925/32a4162adf154299a2e283426378c608/FLAG783582b0a [2019-10-15 03:03:30,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b659b5925/32a4162adf154299a2e283426378c608 [2019-10-15 03:03:30,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:03:30,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:03:30,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:03:30,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:03:30,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:03:30,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:03:30" (1/1) ... [2019-10-15 03:03:30,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65982a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30, skipping insertion in model container [2019-10-15 03:03:30,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:03:30" (1/1) ... [2019-10-15 03:03:30,230 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:03:30,249 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:03:30,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:03:30,442 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:03:30,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:03:30,604 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:03:30,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30 WrapperNode [2019-10-15 03:03:30,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:03:30,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:03:30,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:03:30,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:03:30,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30" (1/1) ... [2019-10-15 03:03:30,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30" (1/1) ... [2019-10-15 03:03:30,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30" (1/1) ... [2019-10-15 03:03:30,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30" (1/1) ... [2019-10-15 03:03:30,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30" (1/1) ... [2019-10-15 03:03:30,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30" (1/1) ... [2019-10-15 03:03:30,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30" (1/1) ... [2019-10-15 03:03:30,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:03:30,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:03:30,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:03:30,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:03:30,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30" (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 03:03:30,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:03:30,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:03:30,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:03:30,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:03:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:03:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:03:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:03:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:03:30,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:03:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:03:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:03:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:03:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:03:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:03:31,357 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:03:31,357 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:03:31,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:03:31 BoogieIcfgContainer [2019-10-15 03:03:31,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:03:31,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:03:31,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:03:31,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:03:31,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:03:30" (1/3) ... [2019-10-15 03:03:31,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3c7875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:03:31, skipping insertion in model container [2019-10-15 03:03:31,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:30" (2/3) ... [2019-10-15 03:03:31,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3c7875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:03:31, skipping insertion in model container [2019-10-15 03:03:31,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:03:31" (3/3) ... [2019-10-15 03:03:31,368 INFO L109 eAbstractionObserver]: Analyzing ICFG eureka_01-2.c [2019-10-15 03:03:31,379 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:03:31,389 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:03:31,402 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:03:31,428 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:03:31,429 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:03:31,429 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:03:31,429 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:03:31,429 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:03:31,430 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:03:31,430 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:03:31,430 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:03:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-15 03:03:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 03:03:31,455 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:03:31,456 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:03:31,458 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:03:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:03:31,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1108608161, now seen corresponding path program 1 times [2019-10-15 03:03:31,473 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:03:31,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240648024] [2019-10-15 03:03:31,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:31,475 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:31,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:03:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:03:31,757 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 03:03:31,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240648024] [2019-10-15 03:03:31,759 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:03:31,759 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:03:31,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825673813] [2019-10-15 03:03:31,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:03:31,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:03:31,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:03:31,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:03:31,782 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-15 03:03:31,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:03:31,863 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2019-10-15 03:03:31,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:03:31,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-15 03:03:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:03:31,877 INFO L225 Difference]: With dead ends: 41 [2019-10-15 03:03:31,878 INFO L226 Difference]: Without dead ends: 20 [2019-10-15 03:03:31,884 INFO L600 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 [2019-10-15 03:03:31,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-15 03:03:31,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-15 03:03:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-15 03:03:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-15 03:03:31,923 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2019-10-15 03:03:31,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:03:31,923 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-15 03:03:31,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:03:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-15 03:03:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 03:03:31,924 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:03:31,925 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:03:31,925 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:03:31,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:03:31,926 INFO L82 PathProgramCache]: Analyzing trace with hash -84964102, now seen corresponding path program 1 times [2019-10-15 03:03:31,926 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:03:31,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559604712] [2019-10-15 03:03:31,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:31,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:31,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:03:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:03:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:03:32,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559604712] [2019-10-15 03:03:32,022 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:03:32,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:03:32,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571064489] [2019-10-15 03:03:32,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:03:32,025 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:03:32,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:03:32,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:03:32,026 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 4 states. [2019-10-15 03:03:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:03:32,103 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-10-15 03:03:32,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:03:32,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-15 03:03:32,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:03:32,106 INFO L225 Difference]: With dead ends: 38 [2019-10-15 03:03:32,107 INFO L226 Difference]: Without dead ends: 27 [2019-10-15 03:03:32,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 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 03:03:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-15 03:03:32,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2019-10-15 03:03:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 03:03:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-15 03:03:32,126 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2019-10-15 03:03:32,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:03:32,126 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-15 03:03:32,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:03:32,127 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-15 03:03:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 03:03:32,128 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:03:32,128 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:03:32,129 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:03:32,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:03:32,129 INFO L82 PathProgramCache]: Analyzing trace with hash -991237889, now seen corresponding path program 1 times [2019-10-15 03:03:32,130 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:03:32,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707427647] [2019-10-15 03:03:32,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:32,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:32,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:03:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:03:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:03:32,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707427647] [2019-10-15 03:03:32,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:03:32,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:03:32,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112143331] [2019-10-15 03:03:32,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:03:32,245 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:03:32,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:03:32,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:03:32,246 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2019-10-15 03:03:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:03:32,288 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-10-15 03:03:32,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:03:32,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-15 03:03:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:03:32,289 INFO L225 Difference]: With dead ends: 35 [2019-10-15 03:03:32,290 INFO L226 Difference]: Without dead ends: 22 [2019-10-15 03:03:32,290 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 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 03:03:32,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-15 03:03:32,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-15 03:03:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-15 03:03:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-15 03:03:32,297 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2019-10-15 03:03:32,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:03:32,297 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-15 03:03:32,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:03:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-15 03:03:32,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-15 03:03:32,300 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:03:32,300 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:03:32,300 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:03:32,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:03:32,302 INFO L82 PathProgramCache]: Analyzing trace with hash -652249821, now seen corresponding path program 1 times [2019-10-15 03:03:32,302 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:03:32,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291058801] [2019-10-15 03:03:32,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:32,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:32,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:03:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:03:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:03:32,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291058801] [2019-10-15 03:03:32,454 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:03:32,454 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:03:32,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526712555] [2019-10-15 03:03:32,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:03:32,458 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:03:32,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:03:32,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:03:32,459 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2019-10-15 03:03:32,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:03:32,564 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-10-15 03:03:32,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:03:32,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-15 03:03:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:03:32,566 INFO L225 Difference]: With dead ends: 38 [2019-10-15 03:03:32,567 INFO L226 Difference]: Without dead ends: 29 [2019-10-15 03:03:32,568 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 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 03:03:32,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-15 03:03:32,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2019-10-15 03:03:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 03:03:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-10-15 03:03:32,584 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2019-10-15 03:03:32,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:03:32,585 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-10-15 03:03:32,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:03:32,585 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-15 03:03:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 03:03:32,588 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:03:32,588 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:03:32,588 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:03:32,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:03:32,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1771118706, now seen corresponding path program 1 times [2019-10-15 03:03:32,589 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:03:32,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853689208] [2019-10-15 03:03:32,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:32,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:32,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:03:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:03:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:03:32,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853689208] [2019-10-15 03:03:32,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335632190] [2019-10-15 03:03:32,665 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 03:03:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:03:32,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:03:32,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:03:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:03:32,818 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:03:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:03:32,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [639339934] [2019-10-15 03:03:32,884 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-15 03:03:32,884 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:03:32,890 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:03:32,899 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:03:32,900 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:03:33,102 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 26 for LOIs [2019-10-15 03:03:33,742 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-15 03:03:33,911 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 439 DAG size of output: 439 [2019-10-15 03:03:34,133 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2019-10-15 03:03:34,326 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 454 [2019-10-15 03:03:34,796 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 317 [2019-10-15 03:03:35,290 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-10-15 03:03:35,540 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-10-15 03:03:41,517 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 169776 conjuctions. This might take some time...